implement GIF support without registering a new formatter

we shouldn't need a new formatter ever again
now that we have `_repr_mimebundle_`

IPython/core/display.py

@@ -1,1372 +1,1357 b''
 # -*- coding: utf-8 -*-
 """Top-level display functions for displaying object in different formats."""
 
 # Copyright (c) IPython Development Team.
 # Distributed under the terms of the Modified BSD License.
 
 
 try:
     from base64 import encodebytes as base64_encode
 except ImportError:
     from base64 import encodestring as base64_encode
 
 from binascii import b2a_hex
 import json
 import mimetypes
 import os
 import struct
 import sys
 import warnings
 from copy import deepcopy
 
 from IPython.utils.py3compat import cast_unicode
 from IPython.testing.skipdoctest import skip_doctest
 
 __all__ = ['display', 'display_pretty', 'display_html', 'display_markdown',
-'display_svg', 'display_png', 'display_jpeg', 'display_gif', 'display_latex', 'display_json',
+'display_svg', 'display_png', 'display_jpeg', 'display_latex', 'display_json',
 'display_javascript', 'display_pdf', 'DisplayObject', 'TextDisplayObject',
 'Pretty', 'HTML', 'Markdown', 'Math', 'Latex', 'SVG', 'JSON', 'GeoJSON', 'Javascript',
 'Image', 'clear_output', 'set_matplotlib_formats', 'set_matplotlib_close',
 'publish_display_data', 'update_display', 'DisplayHandle', 'Video']
 
 #-----------------------------------------------------------------------------
 # utility functions
 #-----------------------------------------------------------------------------
 
 def _safe_exists(path):
     """Check path, but don't let exceptions raise"""
     try:
         return os.path.exists(path)
     except Exception:
         return False
 
 def _merge(d1, d2):
     """Like update, but merges sub-dicts instead of clobbering at the top level.
 
     Updates d1 in-place
     """
 
     if not isinstance(d2, dict) or not isinstance(d1, dict):
         return d2
     for key, value in d2.items():
         d1[key] = _merge(d1.get(key), value)
     return d1
 
 def _display_mimetype(mimetype, objs, raw=False, metadata=None):
     """internal implementation of all display_foo methods
 
     Parameters
     ----------
     mimetype : str
         The mimetype to be published (e.g. 'image/png')
     objs : tuple of objects
         The Python objects to display, or if raw=True raw text data to
         display.
     raw : bool
         Are the data objects raw data or Python objects that need to be
         formatted before display? [default: False]
     metadata : dict (optional)
         Metadata to be associated with the specific mimetype output.
     """
     if metadata:
         metadata = {mimetype: metadata}
     if raw:
         # turn list of pngdata into list of { 'image/png': pngdata }
         objs = [ {mimetype: obj} for obj in objs ]
     display(*objs, raw=raw, metadata=metadata, include=[mimetype])
 
 #-----------------------------------------------------------------------------
 # Main functions
 #-----------------------------------------------------------------------------
 
 # use * to indicate transient is keyword-only
 def publish_display_data(data, metadata=None, source=None, *, transient=None, **kwargs):
     """Publish data and metadata to all frontends.
 
     See the ``display_data`` message in the messaging documentation for
     more details about this message type.
 
-    The following MIME types are currently implemented:
-
-    * text/plain
-    * text/html
-    * text/markdown
-    * text/latex
-    * application/json
-    * application/javascript
-    * image/png
-    * image/jpeg
-    * image/gif
-    * image/svg+xml
+    Keys of data and metadata can be any mime-type.
 
     Parameters
     ----------
     data : dict
         A dictionary having keys that are valid MIME types (like
         'text/plain' or 'image/svg+xml') and values that are the data for
         that MIME type. The data itself must be a JSON'able data
         structure. Minimally all data should have the 'text/plain' data,
         which can be displayed by all frontends. If more than the plain
         text is given, it is up to the frontend to decide which
         representation to use.
     metadata : dict
         A dictionary for metadata related to the data. This can contain
         arbitrary key, value pairs that frontends can use to interpret
         the data. mime-type keys matching those in data can be used
         to specify metadata about particular representations.
     source : str, deprecated
         Unused.
     transient : dict, keyword-only
         A dictionary of transient data, such as display_id.
         """
     from IPython.core.interactiveshell import InteractiveShell
 
     display_pub = InteractiveShell.instance().display_pub
 
     # only pass transient if supplied,
     # to avoid errors with older ipykernel.
     # TODO: We could check for ipykernel version and provide a detailed upgrade message.
     if transient:
         kwargs['transient'] = transient
 
     display_pub.publish(
         data=data,
         metadata=metadata,
         **kwargs
     )
 
 
 def _new_id():
     """Generate a new random text id with urandom"""
     return b2a_hex(os.urandom(16)).decode('ascii')
 
 
 def display(*objs, include=None, exclude=None, metadata=None, transient=None, display_id=None, **kwargs):
     """Display a Python object in all frontends.
 
     By default all representations will be computed and sent to the frontends.
     Frontends can decide which representation is used and how.
 
     In terminal IPython this will be similar to using :func:`print`, for use in richer
     frontends see Jupyter notebook examples with rich display logic.
 
     Parameters
     ----------
     objs : tuple of objects
         The Python objects to display.
     raw : bool, optional
         Are the objects to be displayed already mimetype-keyed dicts of raw display data,
         or Python objects that need to be formatted before display? [default: False]
     include : list, tuple or set, optional
         A list of format type strings (MIME types) to include in the
         format data dict. If this is set *only* the format types included
         in this list will be computed.
     exclude : list, tuple or set, optional
         A list of format type strings (MIME types) to exclude in the format
         data dict. If this is set all format types will be computed,
         except for those included in this argument.
     metadata : dict, optional
         A dictionary of metadata to associate with the output.
         mime-type keys in this dictionary will be associated with the individual
         representation formats, if they exist.
     transient : dict, optional
         A dictionary of transient data to associate with the output.
         Data in this dict should not be persisted to files (e.g. notebooks).
     display_id : str, bool optional
         Set an id for the display.
         This id can be used for updating this display area later via update_display.
         If given as `True`, generate a new `display_id`
     kwargs: additional keyword-args, optional
         Additional keyword-arguments are passed through to the display publisher.
 
     Returns
     -------
 
     handle: DisplayHandle
         Returns a handle on updatable displays for use with :func:`update_display`,
         if `display_id` is given. Returns :any:`None` if no `display_id` is given
         (default).
 
     Examples
     --------
 
     >>> class Json(object):
     ...     def __init__(self, json):
     ...         self.json = json
     ...     def _repr_pretty_(self, pp, cycle):
     ...         import json
     ...         pp.text(json.dumps(self.json, indent=2))
     ...     def __repr__(self):
     ...         return str(self.json)
     ...
 
     >>> d = Json({1:2, 3: {4:5}})
 
     >>> print(d)
     {1: 2, 3: {4: 5}}
 
     >>> display(d)
     {
       "1": 2,
       "3": {
         "4": 5
       }
     }
 
     >>> def int_formatter(integer, pp, cycle):
     ...     pp.text('I'*integer)
 
     >>> plain = get_ipython().display_formatter.formatters['text/plain']
     >>> plain.for_type(int, int_formatter)
     <function _repr_pprint at 0x...>
     >>> display(7-5)
     II
 
     >>> del plain.type_printers[int]
     >>> display(7-5)
     2
 
     See Also
     --------
 
     :func:`update_display`
 
     Notes
     -----
 
     In Python, objects can declare their textual representation using the
     `__repr__` method. IPython expands on this idea and allows objects to declare
     other, rich representations including:
 
       - HTML
       - JSON
       - PNG
       - JPEG
       - SVG
       - LaTeX
 
     A single object can declare some or all of these representations; all are
     handled by IPython's display system.
 
     The main idea of the first approach is that you have to implement special
     display methods when you define your class, one for each representation you
     want to use. Here is a list of the names of the special methods and the
     values they must return:
 
       - `_repr_html_`: return raw HTML as a string
       - `_repr_json_`: return a JSONable dict
       - `_repr_jpeg_`: return raw JPEG data
       - `_repr_png_`: return raw PNG data
-      - `_repr_gif_`: return raw GIF data
       - `_repr_svg_`: return raw SVG data as a string
       - `_repr_latex_`: return LaTeX commands in a string surrounded by "$".
       - `_repr_mimebundle_`: return a full mimebundle containing the mapping
-      from all mimetypes to data
+                             from all mimetypes to data.
+                             Use this for any mime-type not listed above.
 
     When you are directly writing your own classes, you can adapt them for
     display in IPython by following the above approach. But in practice, you
     often need to work with existing classes that you can't easily modify.
 
     You can refer to the documentation on IPython display formatters in order to
     register custom formatters for already existing types.
 
     .. versionadded:: 5.4 display available without import
     .. versionadded:: 6.1 display available without import
 
     Since IPython 5.4 and 6.1 :func:`display` is automatically made available to
     the user without import. If you are using display in a document that might
     be used in a pure python context or with older version of IPython, use the
     following import at the top of your file::
 
         from IPython.display import display
 
     """
     from IPython.core.interactiveshell import InteractiveShell
     
     if not InteractiveShell.initialized():
         # Directly print objects.
         print(*objs)
         return
     
     raw = kwargs.pop('raw', False)
     if transient is None:
         transient = {}
     if metadata is None:
         metadata={}
     if display_id:
         if display_id is True:
             display_id = _new_id()
         transient['display_id'] = display_id
     if kwargs.get('update') and 'display_id' not in transient:
         raise TypeError('display_id required for update_display')
     if transient:
         kwargs['transient'] = transient
 
     if not raw:
         format = InteractiveShell.instance().display_formatter.format
 
     for obj in objs:
         if raw:
             publish_display_data(data=obj, metadata=metadata, **kwargs)
         else:
             format_dict, md_dict = format(obj, include=include, exclude=exclude)
             if not format_dict:
                 # nothing to display (e.g. _ipython_display_ took over)
                 continue
             if metadata:
                 # kwarg-specified metadata gets precedence
                 _merge(md_dict, metadata)
             publish_display_data(data=format_dict, metadata=md_dict, **kwargs)
     if display_id:
         return DisplayHandle(display_id)
 
 
 # use * for keyword-only display_id arg
 def update_display(obj, *, display_id, **kwargs):
     """Update an existing display by id
 
     Parameters
     ----------
 
     obj:
         The object with which to update the display
     display_id: keyword-only
         The id of the display to update
 
     See Also
     --------
 
     :func:`display`
     """
     kwargs['update'] = True
     display(obj, display_id=display_id, **kwargs)
 
 
 class DisplayHandle(object):
     """A handle on an updatable display
 
     Call `.update(obj)` to display a new object.
 
     Call `.display(obj`) to add a new instance of this display,
     and update existing instances.
 
     See Also
     --------
 
         :func:`display`, :func:`update_display`
 
     """
 
     def __init__(self, display_id=None):
         if display_id is None:
             display_id = _new_id()
         self.display_id = display_id
 
     def __repr__(self):
         return "<%s display_id=%s>" % (self.__class__.__name__, self.display_id)
 
     def display(self, obj, **kwargs):
         """Make a new display with my id, updating existing instances.
         
         Parameters
         ----------
         
         obj:
             object to display
         **kwargs:
             additional keyword arguments passed to display
         """
         display(obj, display_id=self.display_id, **kwargs)
 
     def update(self, obj, **kwargs):
         """Update existing displays with my id
         
         Parameters
         ----------
         
         obj:
             object to display
         **kwargs:
             additional keyword arguments passed to update_display
         """
         update_display(obj, display_id=self.display_id, **kwargs)
 
 
 def display_pretty(*objs, **kwargs):
     """Display the pretty (default) representation of an object.
 
     Parameters
     ----------
     objs : tuple of objects
         The Python objects to display, or if raw=True raw text data to
         display.
     raw : bool
         Are the data objects raw data or Python objects that need to be
         formatted before display? [default: False]
     metadata : dict (optional)
         Metadata to be associated with the specific mimetype output.
     """
     _display_mimetype('text/plain', objs, **kwargs)
 
 
 def display_html(*objs, **kwargs):
     """Display the HTML representation of an object.
 
     Note: If raw=False and the object does not have a HTML
     representation, no HTML will be shown.
 
     Parameters
     ----------
     objs : tuple of objects
         The Python objects to display, or if raw=True raw HTML data to
         display.
     raw : bool
         Are the data objects raw data or Python objects that need to be
         formatted before display? [default: False]
     metadata : dict (optional)
         Metadata to be associated with the specific mimetype output.
     """
     _display_mimetype('text/html', objs, **kwargs)
 
 
 def display_markdown(*objs, **kwargs):
     """Displays the Markdown representation of an object.
 
     Parameters
     ----------
     objs : tuple of objects
         The Python objects to display, or if raw=True raw markdown data to
         display.
     raw : bool
         Are the data objects raw data or Python objects that need to be
         formatted before display? [default: False]
     metadata : dict (optional)
         Metadata to be associated with the specific mimetype output.
     """
 
     _display_mimetype('text/markdown', objs, **kwargs)
 
 
 def display_svg(*objs, **kwargs):
     """Display the SVG representation of an object.
 
     Parameters
     ----------
     objs : tuple of objects
         The Python objects to display, or if raw=True raw svg data to
         display.
     raw : bool
         Are the data objects raw data or Python objects that need to be
         formatted before display? [default: False]
     metadata : dict (optional)
         Metadata to be associated with the specific mimetype output.
     """
     _display_mimetype('image/svg+xml', objs, **kwargs)
 
 
 def display_png(*objs, **kwargs):
     """Display the PNG representation of an object.
 
     Parameters
     ----------
     objs : tuple of objects
         The Python objects to display, or if raw=True raw png data to
         display.
     raw : bool
         Are the data objects raw data or Python objects that need to be
         formatted before display? [default: False]
     metadata : dict (optional)
         Metadata to be associated with the specific mimetype output.
     """
     _display_mimetype('image/png', objs, **kwargs)
 
 
 def display_jpeg(*objs, **kwargs):
     """Display the JPEG representation of an object.
 
     Parameters
     ----------
     objs : tuple of objects
         The Python objects to display, or if raw=True raw JPEG data to
         display.
     raw : bool
         Are the data objects raw data or Python objects that need to be
         formatted before display? [default: False]
     metadata : dict (optional)
         Metadata to be associated with the specific mimetype output.
     """
     _display_mimetype('image/jpeg', objs, **kwargs)
     
-def display_gif(*objs, **kwargs):
-    """Display the GIF representation of an object.
-
-    Parameters
-    ----------
-    objs : tuple of objects
-        The Python objects to display, or if raw=True raw gif data to
-        display.
-    raw : bool
-        Are the data objects raw data or Python objects that need to be
-        formatted before display? [default: False]
-    metadata : dict (optional)
-        Metadata to be associated with the specific mimetype output.
-    """
-    _display_mimetype('image/gif', objs, **kwargs)
-
 
 def display_latex(*objs, **kwargs):
     """Display the LaTeX representation of an object.
 
     Parameters
     ----------
     objs : tuple of objects
         The Python objects to display, or if raw=True raw latex data to
         display.
     raw : bool
         Are the data objects raw data or Python objects that need to be
         formatted before display? [default: False]
     metadata : dict (optional)
         Metadata to be associated with the specific mimetype output.
     """
     _display_mimetype('text/latex', objs, **kwargs)
 
 
 def display_json(*objs, **kwargs):
     """Display the JSON representation of an object.
 
     Note that not many frontends support displaying JSON.
 
     Parameters
     ----------
     objs : tuple of objects
         The Python objects to display, or if raw=True raw json data to
         display.
     raw : bool
         Are the data objects raw data or Python objects that need to be
         formatted before display? [default: False]
     metadata : dict (optional)
         Metadata to be associated with the specific mimetype output.
     """
     _display_mimetype('application/json', objs, **kwargs)
 
 
 def display_javascript(*objs, **kwargs):
     """Display the Javascript representation of an object.
 
     Parameters
     ----------
     objs : tuple of objects
         The Python objects to display, or if raw=True raw javascript data to
         display.
     raw : bool
         Are the data objects raw data or Python objects that need to be
         formatted before display? [default: False]
     metadata : dict (optional)
         Metadata to be associated with the specific mimetype output.
     """
     _display_mimetype('application/javascript', objs, **kwargs)
 
 
 def display_pdf(*objs, **kwargs):
     """Display the PDF representation of an object.
 
     Parameters
     ----------
     objs : tuple of objects
         The Python objects to display, or if raw=True raw javascript data to
         display.
     raw : bool
         Are the data objects raw data or Python objects that need to be
         formatted before display? [default: False]
     metadata : dict (optional)
         Metadata to be associated with the specific mimetype output.
     """
     _display_mimetype('application/pdf', objs, **kwargs)
 
 
 #-----------------------------------------------------------------------------
 # Smart classes
 #-----------------------------------------------------------------------------
 
 
 class DisplayObject(object):
     """An object that wraps data to be displayed."""
 
     _read_flags = 'r'
     _show_mem_addr = False
     metadata = None
 
     def __init__(self, data=None, url=None, filename=None, metadata=None):
         """Create a display object given raw data.
 
         When this object is returned by an expression or passed to the
         display function, it will result in the data being displayed
         in the frontend. The MIME type of the data should match the
         subclasses used, so the Png subclass should be used for 'image/png'
         data. If the data is a URL, the data will first be downloaded
         and then displayed. If
 
         Parameters
         ----------
         data : unicode, str or bytes
             The raw data or a URL or file to load the data from
         url : unicode
             A URL to download the data from.
         filename : unicode
             Path to a local file to load the data from.
         metadata : dict
             Dict of metadata associated to be the object when displayed
         """
         if data is not None and isinstance(data, str):
             if data.startswith('http') and url is None:
                 url = data
                 filename = None
                 data = None
             elif _safe_exists(data) and filename is None:
                 url = None
                 filename = data
                 data = None
 
         self.data = data
         self.url = url
         self.filename = filename
 
         if metadata is not None:
             self.metadata = metadata
         elif self.metadata is None:
             self.metadata = {}
 
         self.reload()
         self._check_data()
 
     def __repr__(self):
         if not self._show_mem_addr:
             cls = self.__class__
             r = "<%s.%s object>" % (cls.__module__, cls.__name__)
         else:
             r = super(DisplayObject, self).__repr__()
         return r
 
     def _check_data(self):
         """Override in subclasses if there's something to check."""
         pass
 
     def _data_and_metadata(self):
         """shortcut for returning metadata with shape information, if defined"""
         if self.metadata:
             return self.data, deepcopy(self.metadata)
         else:
             return self.data
 
     def reload(self):
         """Reload the raw data from file or URL."""
         if self.filename is not None:
             with open(self.filename, self._read_flags) as f:
                 self.data = f.read()
         elif self.url is not None:
             try:
                 # Deferred import
                 from urllib.request import urlopen
                 response = urlopen(self.url)
                 self.data = response.read()
                 # extract encoding from header, if there is one:
                 encoding = None
                 for sub in response.headers['content-type'].split(';'):
                     sub = sub.strip()
                     if sub.startswith('charset'):
                         encoding = sub.split('=')[-1].strip()
                         break
                 # decode data, if an encoding was specified
                 if encoding:
                     self.data = self.data.decode(encoding, 'replace')
             except:
                 self.data = None
 
 class TextDisplayObject(DisplayObject):
     """Validate that display data is text"""
     def _check_data(self):
         if self.data is not None and not isinstance(self.data, str):
             raise TypeError("%s expects text, not %r" % (self.__class__.__name__, self.data))
 
 class Pretty(TextDisplayObject):
 
     def _repr_pretty_(self, pp, cycle):
         return pp.text(self.data)
 
 
 class HTML(TextDisplayObject):
 
     def _repr_html_(self):
         return self.data
 
     def __html__(self):
         """
         This method exists to inform other HTML-using modules (e.g. Markupsafe,
         htmltag, etc) that this object is HTML and does not need things like
         special characters (<>&) escaped.
         """
         return self._repr_html_()
 
 
 class Markdown(TextDisplayObject):
 
     def _repr_markdown_(self):
         return self.data
 
 
 class Math(TextDisplayObject):
 
     def _repr_latex_(self):
         s = self.data.strip('$')
         return "$$%s$$" % s
 
 
 class Latex(TextDisplayObject):
 
     def _repr_latex_(self):
         return self.data
 
 
 class SVG(DisplayObject):
 
     _read_flags = 'rb'
     # wrap data in a property, which extracts the <svg> tag, discarding
     # document headers
     _data = None
 
     @property
     def data(self):
         return self._data
 
     @data.setter
     def data(self, svg):
         if svg is None:
             self._data = None
             return
         # parse into dom object
         from xml.dom import minidom
         x = minidom.parseString(svg)
         # get svg tag (should be 1)
         found_svg = x.getElementsByTagName('svg')
         if found_svg:
             svg = found_svg[0].toxml()
         else:
             # fallback on the input, trust the user
             # but this is probably an error.
             pass
         svg = cast_unicode(svg)
         self._data = svg
     
     def _repr_svg_(self):
         return self._data_and_metadata()
 
 
 class JSON(DisplayObject):
     """JSON expects a JSON-able dict or list
 
     not an already-serialized JSON string.
 
     Scalar types (None, number, string) are not allowed, only dict or list containers.
     """
     # wrap data in a property, which warns about passing already-serialized JSON
     _data = None
     def __init__(self, data=None, url=None, filename=None, expanded=False, metadata=None, **kwargs):
         """Create a JSON display object given raw data.
 
         Parameters
         ----------
         data : dict or list
             JSON data to display. Not an already-serialized JSON string.
             Scalar types (None, number, string) are not allowed, only dict
             or list containers.
         url : unicode
             A URL to download the data from.
         filename : unicode
             Path to a local file to load the data from.
         expanded : boolean
             Metadata to control whether a JSON display component is expanded.
         metadata: dict
             Specify extra metadata to attach to the json display object.
         """
         self.metadata = {'expanded': expanded}
         if metadata:
             self.metadata.update(metadata)
         if kwargs:
             self.metadata.update(kwargs)
         super(JSON, self).__init__(data=data, url=url, filename=filename)
 
     def _check_data(self):
         if self.data is not None and not isinstance(self.data, (dict, list)):
             raise TypeError("%s expects JSONable dict or list, not %r" % (self.__class__.__name__, self.data))
 
     @property
     def data(self):
         return self._data
 
     @data.setter
     def data(self, data):
         if isinstance(data, str):
             if getattr(self, 'filename', None) is None:
                 warnings.warn("JSON expects JSONable dict or list, not JSON strings")
             data = json.loads(data)
         self._data = data
 
     def _data_and_metadata(self):
         return self.data, self.metadata
 
     def _repr_json_(self):
         return self._data_and_metadata()
 
 _css_t = """$("head").append($("<link/>").attr({
   rel:  "stylesheet",
   type: "text/css",
   href: "%s"
 }));
 """
 
 _lib_t1 = """$.getScript("%s", function () {
 """
 _lib_t2 = """});
 """
 
 class GeoJSON(JSON):
     """GeoJSON expects JSON-able dict
 
     not an already-serialized JSON string.
 
     Scalar types (None, number, string) are not allowed, only dict containers.
     """
     
     def __init__(self, *args, **kwargs):
         """Create a GeoJSON display object given raw data.
 
         Parameters
         ----------
         data : dict or list
             VegaLite data. Not an already-serialized JSON string.
             Scalar types (None, number, string) are not allowed, only dict
             or list containers.
         url_template : string
             Leaflet TileLayer URL template: http://leafletjs.com/reference.html#url-template
         layer_options : dict
             Leaflet TileLayer options: http://leafletjs.com/reference.html#tilelayer-options
         url : unicode
             A URL to download the data from.
         filename : unicode
             Path to a local file to load the data from.
         metadata: dict
             Specify extra metadata to attach to the json display object.
 
         Examples
         --------
 
         The following will display an interactive map of Mars with a point of
         interest on frontend that do support GeoJSON display.
 
             >>> from IPython.display import GeoJSON
 
             >>> GeoJSON(data={
             ...     "type": "Feature",
             ...     "geometry": {
             ...         "type": "Point",
             ...         "coordinates": [-81.327, 296.038]
             ...     }
             ... },
             ... url_template="http://s3-eu-west-1.amazonaws.com/whereonmars.cartodb.net/{basemap_id}/{z}/{x}/{y}.png",
             ... layer_options={
             ...     "basemap_id": "celestia_mars-shaded-16k_global",
             ...     "attribution" : "Celestia/praesepe",
             ...     "minZoom" : 0,
             ...     "maxZoom" : 18,
             ... })
             <IPython.core.display.GeoJSON object>
 
         In the terminal IPython, you will only see the text representation of
         the GeoJSON object.
 
         """
         
         super(GeoJSON, self).__init__(*args, **kwargs)
 
 
     def _ipython_display_(self):
         bundle = {
             'application/geo+json': self.data,
             'text/plain': '<IPython.display.GeoJSON object>'
         }
         metadata = {
             'application/geo+json': self.metadata
         }
         display(bundle, metadata=metadata, raw=True)
 
 class Javascript(TextDisplayObject):
 
     def __init__(self, data=None, url=None, filename=None, lib=None, css=None):
         """Create a Javascript display object given raw data.
 
         When this object is returned by an expression or passed to the
         display function, it will result in the data being displayed
         in the frontend. If the data is a URL, the data will first be
         downloaded and then displayed.
 
         In the Notebook, the containing element will be available as `element`,
         and jQuery will be available.  Content appended to `element` will be
         visible in the output area.
 
         Parameters
         ----------
         data : unicode, str or bytes
             The Javascript source code or a URL to download it from.
         url : unicode
             A URL to download the data from.
         filename : unicode
             Path to a local file to load the data from.
         lib : list or str
             A sequence of Javascript library URLs to load asynchronously before
             running the source code. The full URLs of the libraries should
             be given. A single Javascript library URL can also be given as a
             string.
         css: : list or str
             A sequence of css files to load before running the source code.
             The full URLs of the css files should be given. A single css URL
             can also be given as a string.
         """
         if isinstance(lib, str):
             lib = [lib]
         elif lib is None:
             lib = []
         if isinstance(css, str):
             css = [css]
         elif css is None:
             css = []
         if not isinstance(lib, (list,tuple)):
             raise TypeError('expected sequence, got: %r' % lib)
         if not isinstance(css, (list,tuple)):
             raise TypeError('expected sequence, got: %r' % css)
         self.lib = lib
         self.css = css
         super(Javascript, self).__init__(data=data, url=url, filename=filename)
 
     def _repr_javascript_(self):
         r = ''
         for c in self.css:
             r += _css_t % c
         for l in self.lib:
             r += _lib_t1 % l
         r += self.data
         r += _lib_t2*len(self.lib)
         return r
 
 # constants for identifying png/jpeg data
 _PNG = b'\x89PNG\r\n\x1a\n'
 _JPEG = b'\xff\xd8'
 
 def _pngxy(data):
     """read the (width, height) from a PNG header"""
     ihdr = data.index(b'IHDR')
     # next 8 bytes are width/height
     return struct.unpack('>ii', data[ihdr+4:ihdr+12])
 
 def _jpegxy(data):
     """read the (width, height) from a JPEG header"""
     # adapted from http://www.64lines.com/jpeg-width-height
 
     idx = 4
     while True:
         block_size = struct.unpack('>H', data[idx:idx+2])[0]
         idx = idx + block_size
         if data[idx:idx+2] == b'\xFF\xC0':
             # found Start of Frame
             iSOF = idx
             break
         else:
             # read another block
             idx += 2
 
     return struct.unpack('>HH', data[iSOF+5:iSOF+9])
     
 def _gifxy(data):
     """read the (width, height) from a GIF header"""
     return struct.unpack('<HH', data[6:10])
 
+
 class Image(DisplayObject):
 
     _read_flags = 'rb'
     _FMT_JPEG = u'jpeg'
     _FMT_PNG = u'png'
     _FMT_GIF = u'gif'
     _ACCEPTABLE_EMBEDDINGS = [_FMT_JPEG, _FMT_PNG, _FMT_GIF]
+    _MIMETYPES = {
+        _FMT_PNG: 'image/png',
+        _FMT_JPEG: 'image/jpeg',
+        _FMT_GIF: 'image/gif',
+    }
 
     def __init__(self, data=None, url=None, filename=None, format=None,
                  embed=None, width=None, height=None, retina=False,
                  unconfined=False, metadata=None):
         """Create a PNG/JPEG/GIF image object given raw data.
 
         When this object is returned by an input cell or passed to the
         display function, it will result in the image being displayed
         in the frontend.
 
         Parameters
         ----------
         data : unicode, str or bytes
             The raw image data or a URL or filename to load the data from.
             This always results in embedded image data.
         url : unicode
             A URL to download the data from. If you specify `url=`,
             the image data will not be embedded unless you also specify `embed=True`.
         filename : unicode
             Path to a local file to load the data from.
             Images from a file are always embedded.
         format : unicode
             The format of the image data (png/jpeg/jpg/gif). If a filename or URL is given
             for format will be inferred from the filename extension.
         embed : bool
             Should the image data be embedded using a data URI (True) or be
             loaded using an <img> tag. Set this to True if you want the image
             to be viewable later with no internet connection in the notebook.
 
             Default is `True`, unless the keyword argument `url` is set, then
             default value is `False`.
 
             Note that QtConsole is not able to display images if `embed` is set to `False`
         width : int
             Width in pixels to which to constrain the image in html
         height : int
             Height in pixels to which to constrain the image in html
         retina : bool
             Automatically set the width and height to half of the measured
             width and height.
             This only works for embedded images because it reads the width/height
             from image data.
             For non-embedded images, you can just set the desired display width
             and height directly.
         unconfined: bool
             Set unconfined=True to disable max-width confinement of the image.
         metadata: dict
             Specify extra metadata to attach to the image.
 
         Examples
         --------
         # embedded image data, works in qtconsole and notebook
         # when passed positionally, the first arg can be any of raw image data,
         # a URL, or a filename from which to load image data.
         # The result is always embedding image data for inline images.
         Image('http://www.google.fr/images/srpr/logo3w.png')
         Image('/path/to/image.jpg')
         Image(b'RAW_PNG_DATA...')
 
         # Specifying Image(url=...) does not embed the image data,
         # it only generates `<img>` tag with a link to the source.
         # This will not work in the qtconsole or offline.
         Image(url='http://www.google.fr/images/srpr/logo3w.png')
 
         """
         if filename is not None:
             ext = self._find_ext(filename)
         elif url is not None:
             ext = self._find_ext(url)
         elif data is None:
             raise ValueError("No image data found. Expecting filename, url, or data.")
         elif isinstance(data, str) and (
             data.startswith('http') or _safe_exists(data)
         ):
             ext = self._find_ext(data)
         else:
             ext = None
 
         if format is None:
             if ext is not None:
                 if ext == u'jpg' or ext == u'jpeg':
                     format = self._FMT_JPEG
                 if ext == u'png':
                     format = self._FMT_PNG
                 if ext == u'gif':
                     format = self._FMT_GIF
                 else:
                     format = ext.lower()
             elif isinstance(data, bytes):
                 # infer image type from image data header,
                 # only if format has not been specified.
                 if data[:2] == _JPEG:
                     format = self._FMT_JPEG
 
         # failed to detect format, default png
         if format is None:
             format = self._FMT_PNG
 
         if format.lower() == 'jpg':
             # jpg->jpeg
             format = self._FMT_JPEG
             
         self.format = format.lower()
         self.embed = embed if embed is not None else (url is None)
 
         if self.embed and self.format not in self._ACCEPTABLE_EMBEDDINGS:
             raise ValueError("Cannot embed the '%s' image format" % (self.format))
+        if self.embed:
+            self._mimetype = self._MIMETYPES.get(self.format)
+
         self.width = width
         self.height = height
         self.retina = retina
         self.unconfined = unconfined
         super(Image, self).__init__(data=data, url=url, filename=filename, 
                 metadata=metadata)
 
         if self.width is None and self.metadata.get('width', {}):
             self.width = metadata['width']
 
         if self.height is None and self.metadata.get('height', {}):
             self.height = metadata['height']
 
         if retina:
             self._retina_shape()
 
+
     def _retina_shape(self):
         """load pixel-doubled width and height from image data"""
         if not self.embed:
             return
         if self.format == self._FMT_PNG:
             w, h = _pngxy(self.data)
         elif self.format == self._FMT_JPEG:
             w, h = _jpegxy(self.data)
         elif self.format == self._FMT_GIF:
             w, h = _gifxy(self.data)
         else:
             # retina only supports png
             return
         self.width = w // 2
         self.height = h // 2
 
     def reload(self):
         """Reload the raw data from file or URL."""
         if self.embed:
             super(Image,self).reload()
             if self.retina:
                 self._retina_shape()
 
     def _repr_html_(self):
         if not self.embed:
             width = height = klass = ''
             if self.width:
                 width = ' width="%d"' % self.width
             if self.height:
                 height = ' height="%d"' % self.height
             if self.unconfined:
                 klass = ' class="unconfined"'
             return u'<img src="{url}"{width}{height}{klass}/>'.format(
                 url=self.url,
                 width=width,
                 height=height,
                 klass=klass,
             )
 
-    def _data_and_metadata(self):
+    def _repr_mimebundle_(self, include=None, exclude=None):
+        """Return the image as a mimebundle
+
+        Any new mimetype support should be implemented here.
+        """
+        if self.embed:
+            mimetype = self._mimetype
+            data, metadata = self._data_and_metadata(always_both=True)
+            if metadata:
+                metadata = {mimetype: metadata}
+            return {mimetype: data}, metadata
+        else:
+            return {'text/html': self._repr_html_()}
+
+    def _data_and_metadata(self, always_both=False):
         """shortcut for returning metadata with shape information, if defined"""
         md = {}
         if self.metadata:
             md.update(self.metadata)
         if self.width:
             md['width'] = self.width
         if self.height:
             md['height'] = self.height
         if self.unconfined:
             md['unconfined'] = self.unconfined
-        if md:
+        if md or always_both:
             return self.data, md
         else:
             return self.data
 
     def _repr_png_(self):
         if self.embed and self.format == self._FMT_PNG:
             return self._data_and_metadata()
 
     def _repr_jpeg_(self):
-        if self.embed and (self.format == self._FMT_JPEG or self.format == u'jpg'):
-            return self._data_and_metadata()
-            
-    def _repr_gif_(self):
-        if self.embed and self.format == self._FMT_GIF:
+        if self.embed and self.format == self._FMT_JPEG:
             return self._data_and_metadata()
 
     def _find_ext(self, s):
         return s.split('.')[-1].lower()
 
+
 class Video(DisplayObject):
 
     def __init__(self, data=None, url=None, filename=None, embed=False, mimetype=None):
         """Create a video object given raw data or an URL.
 
         When this object is returned by an input cell or passed to the
         display function, it will result in the video being displayed
         in the frontend.
 
         Parameters
         ----------
         data : unicode, str or bytes
             The raw video data or a URL or filename to load the data from.
             Raw data will require passing `embed=True`.
         url : unicode
             A URL for the video. If you specify `url=`,
             the image data will not be embedded.
         filename : unicode
             Path to a local file containing the video.
             Will be interpreted as a local URL unless `embed=True`.
         embed : bool
             Should the video be embedded using a data URI (True) or be
             loaded using a <video> tag (False).
 
             Since videos are large, embedding them should be avoided, if possible.
             You must confirm embedding as your intention by passing `embed=True`.
 
             Local files can be displayed with URLs without embedding the content, via::
 
                 Video('./video.mp4')
 
         mimetype: unicode
             Specify the mimetype for embedded videos.
             Default will be guessed from file extension, if available.
 
         Examples
         --------
 
         Video('https://archive.org/download/Sita_Sings_the_Blues/Sita_Sings_the_Blues_small.mp4')
         Video('path/to/video.mp4')
         Video('path/to/video.mp4', embed=True)
         Video(b'raw-videodata', embed=True)
         """
         if url is None and isinstance(data, str) and data.startswith(('http:', 'https:')):
             url = data
             data = None
         elif os.path.exists(data):
             filename = data
             data = None
 
         if data and not embed:
             msg = ''.join([
                 "To embed videos, you must pass embed=True ",
                 "(this may make your notebook files huge)\n",
                 "Consider passing Video(url='...')",
             ])
             raise ValueError(msg)
 
         self.mimetype = mimetype
         self.embed = embed
         super(Video, self).__init__(data=data, url=url, filename=filename)
 
     def _repr_html_(self):
         # External URLs and potentially local files are not embedded into the
         # notebook output.
         if not self.embed:
             url = self.url if self.url is not None else self.filename
             output = """<video src="{0}" controls>
       Your browser does not support the <code>video</code> element.
     </video>""".format(url)
             return output
 
         # Embedded videos are base64-encoded.
         mimetype = self.mimetype
         if self.filename is not None:
             if not mimetype:
                 mimetype, _ = mimetypes.guess_type(self.filename)
 
             with open(self.filename, 'rb') as f:
                 video = f.read()
         else:
             video = self.data
         if isinstance(video, str):
             # unicode input is already b64-encoded
             b64_video = video
         else:
             b64_video = base64_encode(video).decode('ascii').rstrip()
 
         output = """<video controls>
  <source src="data:{0};base64,{1}" type="{0}">
  Your browser does not support the video tag.
  </video>""".format(mimetype, b64_video)
         return output
 
     def reload(self):
         # TODO
         pass
 
-    def _repr_png_(self):
-        # TODO
-        pass
-    def _repr_jpeg_(self):
-        # TODO
-        pass
-    def _repr_gif_(self):
-        # TODO
-        pass
 
 def clear_output(wait=False):
     """Clear the output of the current cell receiving output.
 
     Parameters
     ----------
     wait : bool [default: false]
         Wait to clear the output until new output is available to replace it."""
     from IPython.core.interactiveshell import InteractiveShell
     if InteractiveShell.initialized():
         InteractiveShell.instance().display_pub.clear_output(wait)
     else:
         print('\033[2K\r', end='')
         sys.stdout.flush()
         print('\033[2K\r', end='')
         sys.stderr.flush()
 
 
 @skip_doctest
 def set_matplotlib_formats(*formats, **kwargs):
     """Select figure formats for the inline backend. Optionally pass quality for JPEG.
 
     For example, this enables PNG and JPEG output with a JPEG quality of 90%::
 
         In [1]: set_matplotlib_formats('png', 'jpeg', quality=90)
 
     To set this in your config files use the following::
 
         c.InlineBackend.figure_formats = {'png', 'jpeg'}
         c.InlineBackend.print_figure_kwargs.update({'quality' : 90})
 
     Parameters
     ----------
     *formats : strs
         One or more figure formats to enable: 'png', 'retina', 'jpeg', 'svg', 'pdf'.
     **kwargs :
         Keyword args will be relayed to ``figure.canvas.print_figure``.
     """
     from IPython.core.interactiveshell import InteractiveShell
     from IPython.core.pylabtools import select_figure_formats
     # build kwargs, starting with InlineBackend config
     kw = {}
     from ipykernel.pylab.config import InlineBackend
     cfg = InlineBackend.instance()
     kw.update(cfg.print_figure_kwargs)
     kw.update(**kwargs)
     shell = InteractiveShell.instance()
     select_figure_formats(shell, formats, **kw)
 
 @skip_doctest
 def set_matplotlib_close(close=True):
     """Set whether the inline backend closes all figures automatically or not.
 
     By default, the inline backend used in the IPython Notebook will close all
     matplotlib figures automatically after each cell is run. This means that
     plots in different cells won't interfere. Sometimes, you may want to make
     a plot in one cell and then refine it in later cells. This can be accomplished
     by::
 
         In [1]: set_matplotlib_close(False)
 
     To set this in your config files use the following::
 
         c.InlineBackend.close_figures = False
 
     Parameters
     ----------
     close : bool
         Should all matplotlib figures be automatically closed after each cell is
         run?
     """
     from ipykernel.pylab.config import InlineBackend
     cfg = InlineBackend.instance()
     cfg.close_figures = close

IPython/core/formatters.py

@@ -1,1051 +1,1015 b''
 # -*- coding: utf-8 -*-
 """Display formatters.
 
 Inheritance diagram:
 
 .. inheritance-diagram:: IPython.core.formatters
    :parts: 3
 """
 
 # Copyright (c) IPython Development Team.
 # Distributed under the terms of the Modified BSD License.
 
 import abc
 import json
 import sys
 import traceback
 import warnings
 from io import StringIO
 
 from decorator import decorator
 
 from traitlets.config.configurable import Configurable
 from IPython.core.getipython import get_ipython
 from IPython.utils.sentinel import Sentinel
 from IPython.utils.dir2 import get_real_method
 from IPython.lib import pretty
 from traitlets import (
     Bool, Dict, Integer, Unicode, CUnicode, ObjectName, List,
     ForwardDeclaredInstance,
     default, observe,
 )
 
 
 class DisplayFormatter(Configurable):
 
     active_types = List(Unicode(),
         help="""List of currently active mime-types to display.
         You can use this to set a white-list for formats to display.
         
         Most users will not need to change this value.
         """).tag(config=True)
 
     @default('active_types')
     def _active_types_default(self):
         return self.format_types
 
     @observe('active_types')
     def _active_types_changed(self, change):
         for key, formatter in self.formatters.items():
             if key in change['new']:
                 formatter.enabled = True
             else:
                 formatter.enabled = False
 
     ipython_display_formatter = ForwardDeclaredInstance('FormatterABC')
     @default('ipython_display_formatter')
     def _default_formatter(self):
         return IPythonDisplayFormatter(parent=self)
 
     mimebundle_formatter = ForwardDeclaredInstance('FormatterABC')
     @default('mimebundle_formatter')
     def _default_mime_formatter(self):
         return MimeBundleFormatter(parent=self)
 
     # A dict of formatter whose keys are format types (MIME types) and whose
     # values are subclasses of BaseFormatter.
     formatters = Dict()
     @default('formatters')
     def _formatters_default(self):
         """Activate the default formatters."""
         formatter_classes = [
             PlainTextFormatter,
             HTMLFormatter,
             MarkdownFormatter,
             SVGFormatter,
             PNGFormatter,
-            GIFFormatter,
             PDFFormatter,
             JPEGFormatter,
             LatexFormatter,
             JSONFormatter,
             JavascriptFormatter
         ]
         d = {}
         for cls in formatter_classes:
             f = cls(parent=self)
             d[f.format_type] = f
         return d
 
     def format(self, obj, include=None, exclude=None):
         """Return a format data dict for an object.
 
         By default all format types will be computed.
 
         The following MIME types are usually implemented:
 
         * text/plain
         * text/html
         * text/markdown
         * text/latex
         * application/json
         * application/javascript
         * application/pdf
         * image/png
         * image/jpeg
         * image/svg+xml
 
         Parameters
         ----------
         obj : object
             The Python object whose format data will be computed.
         include : list, tuple or set; optional
             A list of format type strings (MIME types) to include in the
             format data dict. If this is set *only* the format types included
             in this list will be computed.
         exclude : list, tuple or set; optional
             A list of format type string (MIME types) to exclude in the format
             data dict. If this is set all format types will be computed,
             except for those included in this argument.
             Mimetypes present in exclude will take precedence over the ones in include
 
         Returns
         -------
         (format_dict, metadata_dict) : tuple of two dicts
         
             format_dict is a dictionary of key/value pairs, one of each format that was
             generated for the object. The keys are the format types, which
             will usually be MIME type strings and the values and JSON'able
             data structure containing the raw data for the representation in
             that format.
             
             metadata_dict is a dictionary of metadata about each mime-type output.
             Its keys will be a strict subset of the keys in format_dict.
 
         Notes
         -----
 
             If an object implement `_repr_mimebundle_` as well as various
             `_repr_*_`, the data returned by `_repr_mimebundle_` will take
             precedence and the corresponding `_repr_*_` for this mimetype will
             not be called.
 
         """
         format_dict = {}
         md_dict = {}
         
         if self.ipython_display_formatter(obj):
             # object handled itself, don't proceed
             return {}, {}
 
         format_dict, md_dict = self.mimebundle_formatter(obj, include=include, exclude=exclude)
 
         if format_dict or md_dict:
             if include:
                 format_dict = {k:v for k,v in format_dict.items() if k in include}
                 md_dict = {k:v for k,v in md_dict.items() if k in include}
             if exclude:
                 format_dict = {k:v for k,v in format_dict.items() if k not in exclude}
                 md_dict = {k:v for k,v in md_dict.items() if k not in exclude}
 
         for format_type, formatter in self.formatters.items():
             if format_type in format_dict:
                 # already got it from mimebundle, don't render again
                 continue
             if include and format_type not in include:
                 continue
             if exclude and format_type in exclude:
                 continue
             
             md = None
             try:
                 data = formatter(obj)
             except:
                 # FIXME: log the exception
                 raise
             
             # formatters can return raw data or (data, metadata)
             if isinstance(data, tuple) and len(data) == 2:
                 data, md = data
             
             if data is not None:
                 format_dict[format_type] = data
             if md is not None:
                 md_dict[format_type] = md
         return format_dict, md_dict
 
     @property
     def format_types(self):
         """Return the format types (MIME types) of the active formatters."""
         return list(self.formatters.keys())
 
 
 #-----------------------------------------------------------------------------
 # Formatters for specific format types (text, html, svg, etc.)
 #-----------------------------------------------------------------------------
 
 
 def _safe_repr(obj):
     """Try to return a repr of an object
 
     always returns a string, at least.
     """
     try:
         return repr(obj)
     except Exception as e:
         return "un-repr-able object (%r)" % e
 
 
 class FormatterWarning(UserWarning):
     """Warning class for errors in formatters"""
 
 @decorator
 def catch_format_error(method, self, *args, **kwargs):
     """show traceback on failed format call"""
     try:
         r = method(self, *args, **kwargs)
     except NotImplementedError:
         # don't warn on NotImplementedErrors
         return None
     except Exception:
         exc_info = sys.exc_info()
         ip = get_ipython()
         if ip is not None:
             ip.showtraceback(exc_info)
         else:
             traceback.print_exception(*exc_info)
         return None
     return self._check_return(r, args[0])
 
 
 class FormatterABC(metaclass=abc.ABCMeta):
     """ Abstract base class for Formatters.
 
     A formatter is a callable class that is responsible for computing the
     raw format data for a particular format type (MIME type). For example,
     an HTML formatter would have a format type of `text/html` and would return
     the HTML representation of the object when called.
     """
 
     # The format type of the data returned, usually a MIME type.
     format_type = 'text/plain'
 
     # Is the formatter enabled...
     enabled = True
     
     @abc.abstractmethod
     def __call__(self, obj):
         """Return a JSON'able representation of the object.
 
         If the object cannot be formatted by this formatter,
         warn and return None.
         """
         return repr(obj)
 
 
 def _mod_name_key(typ):
     """Return a (__module__, __name__) tuple for a type.
     
     Used as key in Formatter.deferred_printers.
     """
     module = getattr(typ, '__module__', None)
     name = getattr(typ, '__name__', None)
     return (module, name)
 
 
 def _get_type(obj):
     """Return the type of an instance (old and new-style)"""
     return getattr(obj, '__class__', None) or type(obj)
 
 
 _raise_key_error = Sentinel('_raise_key_error', __name__, 
 """
 Special value to raise a KeyError
 
 Raise KeyError in `BaseFormatter.pop` if passed as the default value to `pop`
 """)
 
 
 class BaseFormatter(Configurable):
     """A base formatter class that is configurable.
 
     This formatter should usually be used as the base class of all formatters.
     It is a traited :class:`Configurable` class and includes an extensible
     API for users to determine how their objects are formatted. The following
     logic is used to find a function to format an given object.
 
     1. The object is introspected to see if it has a method with the name
        :attr:`print_method`. If is does, that object is passed to that method
        for formatting.
     2. If no print method is found, three internal dictionaries are consulted
        to find print method: :attr:`singleton_printers`, :attr:`type_printers`
        and :attr:`deferred_printers`.
 
     Users should use these dictionaries to register functions that will be
     used to compute the format data for their objects (if those objects don't
     have the special print methods). The easiest way of using these
     dictionaries is through the :meth:`for_type` and :meth:`for_type_by_name`
     methods.
 
     If no function/callable is found to compute the format data, ``None`` is
     returned and this format type is not used.
     """
 
     format_type = Unicode('text/plain')
     _return_type = str
 
     enabled = Bool(True).tag(config=True)
 
     print_method = ObjectName('__repr__')
 
     # The singleton printers.
     # Maps the IDs of the builtin singleton objects to the format functions.
     singleton_printers = Dict().tag(config=True)
 
     # The type-specific printers.
     # Map type objects to the format functions.
     type_printers = Dict().tag(config=True)
 
     # The deferred-import type-specific printers.
     # Map (modulename, classname) pairs to the format functions.
     deferred_printers = Dict().tag(config=True)
     
     @catch_format_error
     def __call__(self, obj):
         """Compute the format for an object."""
         if self.enabled:
             # lookup registered printer
             try:
                 printer = self.lookup(obj)
             except KeyError:
                 pass
             else:
                 return printer(obj)
             # Finally look for special method names
             method = get_real_method(obj, self.print_method)
             if method is not None:
                 return method()
             return None
         else:
             return None
     
     def __contains__(self, typ):
         """map in to lookup_by_type"""
         try:
             self.lookup_by_type(typ)
         except KeyError:
             return False
         else:
             return True
     
     def _check_return(self, r, obj):
         """Check that a return value is appropriate
         
         Return the value if so, None otherwise, warning if invalid.
         """
         if r is None or isinstance(r, self._return_type) or \
             (isinstance(r, tuple) and r and isinstance(r[0], self._return_type)):
             return r
         else:
             warnings.warn(
                 "%s formatter returned invalid type %s (expected %s) for object: %s" % \
                 (self.format_type, type(r), self._return_type, _safe_repr(obj)),
                 FormatterWarning
             )
     
     def lookup(self, obj):
         """Look up the formatter for a given instance.
         
         Parameters
         ----------
         obj  : object instance
 
         Returns
         -------
         f : callable
             The registered formatting callable for the type.
 
         Raises
         ------
         KeyError if the type has not been registered.
         """
         # look for singleton first
         obj_id = id(obj)
         if obj_id in self.singleton_printers:
             return self.singleton_printers[obj_id]
         # then lookup by type
         return self.lookup_by_type(_get_type(obj))
     
     def lookup_by_type(self, typ):
         """Look up the registered formatter for a type.
 
         Parameters
         ----------
         typ  : type or '__module__.__name__' string for a type
 
         Returns
         -------
         f : callable
             The registered formatting callable for the type.
 
         Raises
         ------
         KeyError if the type has not been registered.
         """
         if isinstance(typ, str):
             typ_key = tuple(typ.rsplit('.',1))
             if typ_key not in self.deferred_printers:
                 # We may have it cached in the type map. We will have to
                 # iterate over all of the types to check.
                 for cls in self.type_printers:
                     if _mod_name_key(cls) == typ_key:
                         return self.type_printers[cls]
             else:
                 return self.deferred_printers[typ_key]
         else:
             for cls in pretty._get_mro(typ):
                 if cls in self.type_printers or self._in_deferred_types(cls):
                     return self.type_printers[cls]
         
         # If we have reached here, the lookup failed.
         raise KeyError("No registered printer for {0!r}".format(typ))
 
     def for_type(self, typ, func=None):
         """Add a format function for a given type.
         
         Parameters
         -----------
         typ : type or '__module__.__name__' string for a type
             The class of the object that will be formatted using `func`.
         func : callable
             A callable for computing the format data.
             `func` will be called with the object to be formatted,
             and will return the raw data in this formatter's format.
             Subclasses may use a different call signature for the
             `func` argument.
             
             If `func` is None or not specified, there will be no change,
             only returning the current value.
         
         Returns
         -------
         oldfunc : callable
             The currently registered callable.
             If you are registering a new formatter,
             this will be the previous value (to enable restoring later).
         """
         # if string given, interpret as 'pkg.module.class_name'
         if isinstance(typ, str):
             type_module, type_name = typ.rsplit('.', 1)
             return self.for_type_by_name(type_module, type_name, func)
         
         try:
             oldfunc = self.lookup_by_type(typ)
         except KeyError:
             oldfunc = None
         
         if func is not None:
             self.type_printers[typ] = func
         
         return oldfunc
 
     def for_type_by_name(self, type_module, type_name, func=None):
         """Add a format function for a type specified by the full dotted
         module and name of the type, rather than the type of the object.
 
         Parameters
         ----------
         type_module : str
             The full dotted name of the module the type is defined in, like
             ``numpy``.
         type_name : str
             The name of the type (the class name), like ``dtype``
         func : callable
             A callable for computing the format data.
             `func` will be called with the object to be formatted,
             and will return the raw data in this formatter's format.
             Subclasses may use a different call signature for the
             `func` argument.
             
             If `func` is None or unspecified, there will be no change,
             only returning the current value.
         
         Returns
         -------
         oldfunc : callable
             The currently registered callable.
             If you are registering a new formatter,
             this will be the previous value (to enable restoring later).
         """
         key = (type_module, type_name)
         
         try:
             oldfunc = self.lookup_by_type("%s.%s" % key)
         except KeyError:
             oldfunc = None
         
         if func is not None:
             self.deferred_printers[key] = func
         return oldfunc
     
     def pop(self, typ, default=_raise_key_error):
         """Pop a formatter for the given type.
 
         Parameters
         ----------
         typ : type or '__module__.__name__' string for a type
         default : object
             value to be returned if no formatter is registered for typ.
 
         Returns
         -------
         obj : object
             The last registered object for the type.
 
         Raises
         ------
         KeyError if the type is not registered and default is not specified.
         """
         
         if isinstance(typ, str):
             typ_key = tuple(typ.rsplit('.',1))
             if typ_key not in self.deferred_printers:
                 # We may have it cached in the type map. We will have to
                 # iterate over all of the types to check.
                 for cls in self.type_printers:
                     if _mod_name_key(cls) == typ_key:
                         old = self.type_printers.pop(cls)
                         break
                 else:
                     old = default
             else:
                 old = self.deferred_printers.pop(typ_key)
         else:
             if typ in self.type_printers:
                 old = self.type_printers.pop(typ)
             else:
                 old = self.deferred_printers.pop(_mod_name_key(typ), default)
         if old is _raise_key_error:
             raise KeyError("No registered value for {0!r}".format(typ))
         return old
 
     def _in_deferred_types(self, cls):
         """
         Check if the given class is specified in the deferred type registry.
 
         Successful matches will be moved to the regular type registry for future use.
         """
         mod = getattr(cls, '__module__', None)
         name = getattr(cls, '__name__', None)
         key = (mod, name)
         if key in self.deferred_printers:
             # Move the printer over to the regular registry.
             printer = self.deferred_printers.pop(key)
             self.type_printers[cls] = printer
             return True
         return False
 
 
 class PlainTextFormatter(BaseFormatter):
     """The default pretty-printer.
 
     This uses :mod:`IPython.lib.pretty` to compute the format data of
     the object. If the object cannot be pretty printed, :func:`repr` is used.
     See the documentation of :mod:`IPython.lib.pretty` for details on
     how to write pretty printers.  Here is a simple example::
 
         def dtype_pprinter(obj, p, cycle):
             if cycle:
                 return p.text('dtype(...)')
             if hasattr(obj, 'fields'):
                 if obj.fields is None:
                     p.text(repr(obj))
                 else:
                     p.begin_group(7, 'dtype([')
                     for i, field in enumerate(obj.descr):
                         if i > 0:
                             p.text(',')
                             p.breakable()
                         p.pretty(field)
                     p.end_group(7, '])')
     """
 
     # The format type of data returned.
     format_type = Unicode('text/plain')
 
     # This subclass ignores this attribute as it always need to return
     # something.
     enabled = Bool(True).tag(config=False)
     
     max_seq_length = Integer(pretty.MAX_SEQ_LENGTH,
         help="""Truncate large collections (lists, dicts, tuples, sets) to this size.
         
         Set to 0 to disable truncation.
         """
     ).tag(config=True)
     
     # Look for a _repr_pretty_ methods to use for pretty printing.
     print_method = ObjectName('_repr_pretty_')
 
     # Whether to pretty-print or not.
     pprint = Bool(True).tag(config=True)
 
     # Whether to be verbose or not.
     verbose = Bool(False).tag(config=True)
 
     # The maximum width.
     max_width = Integer(79).tag(config=True)
 
     # The newline character.
     newline = Unicode('\n').tag(config=True)
 
     # format-string for pprinting floats
     float_format = Unicode('%r')
     # setter for float precision, either int or direct format-string
     float_precision = CUnicode('').tag(config=True)
 
     @observe('float_precision')
     def _float_precision_changed(self, change):
         """float_precision changed, set float_format accordingly.
 
         float_precision can be set by int or str.
         This will set float_format, after interpreting input.
         If numpy has been imported, numpy print precision will also be set.
 
         integer `n` sets format to '%.nf', otherwise, format set directly.
 
         An empty string returns to defaults (repr for float, 8 for numpy).
 
         This parameter can be set via the '%precision' magic.
         """
 
         new = change['new']
         if '%' in new:
             # got explicit format string
             fmt = new
             try:
                 fmt%3.14159
             except Exception:
                 raise ValueError("Precision must be int or format string, not %r"%new)
         elif new:
             # otherwise, should be an int
             try:
                 i = int(new)
                 assert i >= 0
             except ValueError:
                 raise ValueError("Precision must be int or format string, not %r"%new)
             except AssertionError:
                 raise ValueError("int precision must be non-negative, not %r"%i)
 
             fmt = '%%.%if'%i
             if 'numpy' in sys.modules:
                 # set numpy precision if it has been imported
                 import numpy
                 numpy.set_printoptions(precision=i)
         else:
             # default back to repr
             fmt = '%r'
             if 'numpy' in sys.modules:
                 import numpy
                 # numpy default is 8
                 numpy.set_printoptions(precision=8)
         self.float_format = fmt
 
     # Use the default pretty printers from IPython.lib.pretty.
     @default('singleton_printers')
     def _singleton_printers_default(self):
         return pretty._singleton_pprinters.copy()
 
     @default('type_printers')
     def _type_printers_default(self):
         d = pretty._type_pprinters.copy()
         d[float] = lambda obj,p,cycle: p.text(self.float_format%obj)
         return d
 
     @default('deferred_printers')
     def _deferred_printers_default(self):
         return pretty._deferred_type_pprinters.copy()
 
     #### FormatterABC interface ####
 
     @catch_format_error
     def __call__(self, obj):
         """Compute the pretty representation of the object."""
         if not self.pprint:
             return repr(obj)
         else:
             stream = StringIO()
             printer = pretty.RepresentationPrinter(stream, self.verbose,
                 self.max_width, self.newline,
                 max_seq_length=self.max_seq_length,
                 singleton_pprinters=self.singleton_printers,
                 type_pprinters=self.type_printers,
                 deferred_pprinters=self.deferred_printers)
             printer.pretty(obj)
             printer.flush()
             return stream.getvalue()
 
 
 class HTMLFormatter(BaseFormatter):
     """An HTML formatter.
 
     To define the callables that compute the HTML representation of your
     objects, define a :meth:`_repr_html_` method or use the :meth:`for_type`
     or :meth:`for_type_by_name` methods to register functions that handle
     this.
 
     The return value of this formatter should be a valid HTML snippet that
     could be injected into an existing DOM. It should *not* include the
     ```<html>`` or ```<body>`` tags.
     """
     format_type = Unicode('text/html')
 
     print_method = ObjectName('_repr_html_')
 
 
 class MarkdownFormatter(BaseFormatter):
     """A Markdown formatter.
 
     To define the callables that compute the Markdown representation of your
     objects, define a :meth:`_repr_markdown_` method or use the :meth:`for_type`
     or :meth:`for_type_by_name` methods to register functions that handle
     this.
 
     The return value of this formatter should be a valid Markdown.
     """
     format_type = Unicode('text/markdown')
 
     print_method = ObjectName('_repr_markdown_')
 
 class SVGFormatter(BaseFormatter):
     """An SVG formatter.
 
     To define the callables that compute the SVG representation of your
     objects, define a :meth:`_repr_svg_` method or use the :meth:`for_type`
     or :meth:`for_type_by_name` methods to register functions that handle
     this.
 
     The return value of this formatter should be valid SVG enclosed in
     ```<svg>``` tags, that could be injected into an existing DOM. It should
     *not* include the ```<html>`` or ```<body>`` tags.
     """
     format_type = Unicode('image/svg+xml')
 
     print_method = ObjectName('_repr_svg_')
 
 
 class PNGFormatter(BaseFormatter):
     """A PNG formatter.
 
     To define the callables that compute the PNG representation of your
     objects, define a :meth:`_repr_png_` method or use the :meth:`for_type`
     or :meth:`for_type_by_name` methods to register functions that handle
     this.
 
     The return value of this formatter should be raw PNG data, *not*
     base64 encoded.
     """
     format_type = Unicode('image/png')
 
     print_method = ObjectName('_repr_png_')
     
     _return_type = (bytes, str)
 
 
 class JPEGFormatter(BaseFormatter):
     """A JPEG formatter.
 
     To define the callables that compute the JPEG representation of your
     objects, define a :meth:`_repr_jpeg_` method or use the :meth:`for_type`
     or :meth:`for_type_by_name` methods to register functions that handle
     this.
 
     The return value of this formatter should be raw JPEG data, *not*
     base64 encoded.
     """
     format_type = Unicode('image/jpeg')
 
     print_method = ObjectName('_repr_jpeg_')
 
     _return_type = (bytes, str)
 
 
-class GIFFormatter(BaseFormatter):
-    """A PNG formatter.
-
-    To define the callables that compute the GIF representation of your
-    objects, define a :meth:`_repr_gif_` method or use the :meth:`for_type`
-    or :meth:`for_type_by_name` methods to register functions that handle
-    this.
-
-    The return value of this formatter should be raw GIF data, *not*
-    base64 encoded.
-    """
-    format_type = Unicode('image/gif')
-
-    print_method = ObjectName('_repr_gif_')
-    
-    _return_type = (bytes, str)
-
-
 class LatexFormatter(BaseFormatter):
     """A LaTeX formatter.
 
     To define the callables that compute the LaTeX representation of your
     objects, define a :meth:`_repr_latex_` method or use the :meth:`for_type`
     or :meth:`for_type_by_name` methods to register functions that handle
     this.
 
     The return value of this formatter should be a valid LaTeX equation,
     enclosed in either ```$```, ```$$``` or another LaTeX equation
     environment.
     """
     format_type = Unicode('text/latex')
 
     print_method = ObjectName('_repr_latex_')
 
 
 class JSONFormatter(BaseFormatter):
     """A JSON string formatter.
 
     To define the callables that compute the JSONable representation of
     your objects, define a :meth:`_repr_json_` method or use the :meth:`for_type`
     or :meth:`for_type_by_name` methods to register functions that handle
     this.
 
     The return value of this formatter should be a JSONable list or dict.
     JSON scalars (None, number, string) are not allowed, only dict or list containers.
     """
     format_type = Unicode('application/json')
     _return_type = (list, dict)
 
     print_method = ObjectName('_repr_json_')
     
     def _check_return(self, r, obj):
         """Check that a return value is appropriate
         
         Return the value if so, None otherwise, warning if invalid.
         """
         if r is None:
             return
         md = None
         if isinstance(r, tuple):
             # unpack data, metadata tuple for type checking on first element
             r, md = r
         
         # handle deprecated JSON-as-string form from IPython < 3
         if isinstance(r, str):
             warnings.warn("JSON expects JSONable list/dict containers, not JSON strings",
             FormatterWarning)
             r = json.loads(r)
         
         if md is not None:
             # put the tuple back together
             r = (r, md)
         return super(JSONFormatter, self)._check_return(r, obj)
 
 
 class JavascriptFormatter(BaseFormatter):
     """A Javascript formatter.
 
     To define the callables that compute the Javascript representation of
     your objects, define a :meth:`_repr_javascript_` method or use the
     :meth:`for_type` or :meth:`for_type_by_name` methods to register functions
     that handle this.
 
     The return value of this formatter should be valid Javascript code and
     should *not* be enclosed in ```<script>``` tags.
     """
     format_type = Unicode('application/javascript')
 
     print_method = ObjectName('_repr_javascript_')
 
 
 class PDFFormatter(BaseFormatter):
     """A PDF formatter.
 
     To define the callables that compute the PDF representation of your
     objects, define a :meth:`_repr_pdf_` method or use the :meth:`for_type`
     or :meth:`for_type_by_name` methods to register functions that handle
     this.
 
     The return value of this formatter should be raw PDF data, *not*
     base64 encoded.
     """
     format_type = Unicode('application/pdf')
 
     print_method = ObjectName('_repr_pdf_')
 
     _return_type = (bytes, str)
 
 class IPythonDisplayFormatter(BaseFormatter):
     """An escape-hatch Formatter for objects that know how to display themselves.
     
     To define the callables that compute the representation of your
     objects, define a :meth:`_ipython_display_` method or use the :meth:`for_type`
     or :meth:`for_type_by_name` methods to register functions that handle
     this. Unlike mime-type displays, this method should not return anything,
     instead calling any appropriate display methods itself.
     
     This display formatter has highest priority.
     If it fires, no other display formatter will be called.
 
     Prior to IPython 6.1, `_ipython_display_` was the only way to display custom mime-types
     without registering a new Formatter.
     
     IPython 6.1 introduces `_repr_mimebundle_` for displaying custom mime-types,
     so `_ipython_display_` should only be used for objects that require unusual
     display patterns, such as multiple display calls.
     """
     print_method = ObjectName('_ipython_display_')
     _return_type = (type(None), bool)
 
     @catch_format_error
     def __call__(self, obj):
         """Compute the format for an object."""
         if self.enabled:
             # lookup registered printer
             try:
                 printer = self.lookup(obj)
             except KeyError:
                 pass
             else:
                 printer(obj)
                 return True
             # Finally look for special method names
             method = get_real_method(obj, self.print_method)
             if method is not None:
                 method()
                 return True
 
 
 class MimeBundleFormatter(BaseFormatter):
     """A Formatter for arbitrary mime-types.
 
     Unlike other `_repr_<mimetype>_` methods,
     `_repr_mimebundle_` should return mime-bundle data,
     either the mime-keyed `data` dictionary or the tuple `(data, metadata)`.
     Any mime-type is valid.
 
     To define the callables that compute the mime-bundle representation of your
     objects, define a :meth:`_repr_mimebundle_` method or use the :meth:`for_type`
     or :meth:`for_type_by_name` methods to register functions that handle
     this.
 
     .. versionadded:: 6.1
     """
     print_method = ObjectName('_repr_mimebundle_')
     _return_type = dict
     
     def _check_return(self, r, obj):
         r = super(MimeBundleFormatter, self)._check_return(r, obj)
         # always return (data, metadata):
         if r is None:
             return {}, {}
         if not isinstance(r, tuple):
             return r, {}
         return r
 
     @catch_format_error
     def __call__(self, obj, include=None, exclude=None):
         """Compute the format for an object.
 
         Identical to parent's method but we pass extra parameters to the method.
 
         Unlike other _repr_*_ `_repr_mimebundle_` should allow extra kwargs, in
         particular `include` and `exclude`.
         """
         if self.enabled:
             # lookup registered printer
             try:
                 printer = self.lookup(obj)
             except KeyError:
                 pass
             else:
                 return printer(obj)
             # Finally look for special method names
             method = get_real_method(obj, self.print_method)
 
             if method is not None:
-                d = {}
-                d['include'] = include
-                d['exclude'] = exclude
-                return method(**d)
+                return method(include=include, exclude=exclude)
             return None
         else:
             return None
 
 
 FormatterABC.register(BaseFormatter)
 FormatterABC.register(PlainTextFormatter)
 FormatterABC.register(HTMLFormatter)
 FormatterABC.register(MarkdownFormatter)
 FormatterABC.register(SVGFormatter)
 FormatterABC.register(PNGFormatter)
-FormatterABC.register(GIFFormatter)
 FormatterABC.register(PDFFormatter)
 FormatterABC.register(JPEGFormatter)
 FormatterABC.register(LatexFormatter)
 FormatterABC.register(JSONFormatter)
 FormatterABC.register(JavascriptFormatter)
 FormatterABC.register(IPythonDisplayFormatter)
 FormatterABC.register(MimeBundleFormatter)
 
 
 def format_display_data(obj, include=None, exclude=None):
     """Return a format data dict for an object.
 
     By default all format types will be computed.
 
-    The following MIME types are currently implemented:
-
-    * text/plain
-    * text/html
-    * text/markdown
-    * text/latex
-    * application/json
-    * application/javascript
-    * application/pdf
-    * image/png
-    * image/jpeg
-    * image/svg+xml
-
     Parameters
     ----------
     obj : object
         The Python object whose format data will be computed.
 
     Returns
     -------
     format_dict : dict
         A dictionary of key/value pairs, one or each format that was
         generated for the object. The keys are the format types, which
         will usually be MIME type strings and the values and JSON'able
         data structure containing the raw data for the representation in
         that format.
     include : list or tuple, optional
         A list of format type strings (MIME types) to include in the
         format data dict. If this is set *only* the format types included
         in this list will be computed.
     exclude : list or tuple, optional
         A list of format type string (MIME types) to exclue in the format
         data dict. If this is set all format types will be computed,
         except for those included in this argument.
     """
     from IPython.core.interactiveshell import InteractiveShell
 
     return InteractiveShell.instance().display_formatter.format(
         obj,
         include,
         exclude
     )

IPython/core/tests/test_display.py

@@ -1,363 +1,373 b''
 # Copyright (c) IPython Development Team.
 # Distributed under the terms of the Modified BSD License.
 
 import json
 import os
 import warnings
 
 from unittest import mock
 
 import nose.tools as nt
 
 from IPython.core import display
 from IPython.core.getipython import get_ipython
 from IPython.utils.tempdir import NamedFileInTemporaryDirectory
 from IPython import paths as ipath
 from IPython.testing.tools import AssertPrints, AssertNotPrints
 
 import IPython.testing.decorators as dec
 
 def test_image_size():
     """Simple test for display.Image(args, width=x,height=y)"""
     thisurl = 'http://www.google.fr/images/srpr/logo3w.png'
     img = display.Image(url=thisurl, width=200, height=200)
     nt.assert_equal(u'<img src="%s" width="200" height="200"/>' % (thisurl), img._repr_html_())
     img = display.Image(url=thisurl, metadata={'width':200, 'height':200})
     nt.assert_equal(u'<img src="%s" width="200" height="200"/>' % (thisurl), img._repr_html_())
     img = display.Image(url=thisurl, width=200)
     nt.assert_equal(u'<img src="%s" width="200"/>' % (thisurl), img._repr_html_())
     img = display.Image(url=thisurl)
     nt.assert_equal(u'<img src="%s"/>' % (thisurl), img._repr_html_())
     img = display.Image(url=thisurl, unconfined=True)
     nt.assert_equal(u'<img src="%s" class="unconfined"/>' % (thisurl), img._repr_html_())
 
 
+def test_image_mimes():
+    fmt = get_ipython().display_formatter.format
+    for format in display.Image._ACCEPTABLE_EMBEDDINGS:
+        mime = display.Image._MIMETYPES[format]
+        img = display.Image(b'garbage', format=format)
+        data, metadata = fmt(img)
+        nt.assert_equal(sorted(data), sorted([mime, 'text/plain']))
+
+
 def test_geojson():
 
     gj = display.GeoJSON(data={
             "type": "Feature",
             "geometry": {
                 "type": "Point",
                 "coordinates": [-81.327, 296.038]
             },
             "properties": {
                 "name": "Inca City"
             }
         },
         url_template="http://s3-eu-west-1.amazonaws.com/whereonmars.cartodb.net/{basemap_id}/{z}/{x}/{y}.png",
         layer_options={
             "basemap_id": "celestia_mars-shaded-16k_global",
             "attribution": "Celestia/praesepe",
             "minZoom": 0,
             "maxZoom": 18,
         })
     nt.assert_equal(u'<IPython.core.display.GeoJSON object>', str(gj))
 
 def test_retina_png():
     here = os.path.dirname(__file__)
     img = display.Image(os.path.join(here, "2x2.png"), retina=True)
     nt.assert_equal(img.height, 1)
     nt.assert_equal(img.width, 1)
     data, md = img._repr_png_()
     nt.assert_equal(md['width'], 1)
     nt.assert_equal(md['height'], 1)
 
 def test_retina_jpeg():
     here = os.path.dirname(__file__)
     img = display.Image(os.path.join(here, "2x2.jpg"), retina=True)
     nt.assert_equal(img.height, 1)
     nt.assert_equal(img.width, 1)
     data, md = img._repr_jpeg_()
     nt.assert_equal(md['width'], 1)
     nt.assert_equal(md['height'], 1)
 
 def test_base64image():
     display.Image("iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAA1BMVEUAAACnej3aAAAAAWJLR0QAiAUdSAAAAAlwSFlzAAALEwAACxMBAJqcGAAAAAd0SU1FB94BCRQnOqNu0b4AAAAKSURBVAjXY2AAAAACAAHiIbwzAAAAAElFTkSuQmCC")
 
 def test_image_filename_defaults():
     '''test format constraint, and validity of jpeg and png'''
     tpath = ipath.get_ipython_package_dir()
     nt.assert_raises(ValueError, display.Image, filename=os.path.join(tpath, 'testing/tests/badformat.zip'),
                      embed=True)
     nt.assert_raises(ValueError, display.Image)
     nt.assert_raises(ValueError, display.Image, data='this is not an image', format='badformat', embed=True)
     # check boths paths to allow packages to test at build and install time
     imgfile = os.path.join(tpath, 'core/tests/2x2.png')
     img = display.Image(filename=imgfile)
     nt.assert_equal('png', img.format)
     nt.assert_is_not_none(img._repr_png_())
     img = display.Image(filename=os.path.join(tpath, 'testing/tests/logo.jpg'), embed=False)
     nt.assert_equal('jpeg', img.format)
     nt.assert_is_none(img._repr_jpeg_())
 
 def _get_inline_config():
     from ipykernel.pylab.config import InlineBackend
     return InlineBackend.instance()
 
 @dec.skip_without('matplotlib')
 def test_set_matplotlib_close():
     cfg = _get_inline_config()
     cfg.close_figures = False
     display.set_matplotlib_close()
     assert cfg.close_figures
     display.set_matplotlib_close(False)
     assert not cfg.close_figures
 
 _fmt_mime_map = {
     'png': 'image/png',
     'jpeg': 'image/jpeg',
     'pdf': 'application/pdf',
     'retina': 'image/png',
     'svg': 'image/svg+xml',
 }
 
 @dec.skip_without('matplotlib')
 def test_set_matplotlib_formats():
     from matplotlib.figure import Figure
     formatters = get_ipython().display_formatter.formatters
     for formats in [
         ('png',),
         ('pdf', 'svg'),
         ('jpeg', 'retina', 'png'),
         (),
     ]:
         active_mimes = {_fmt_mime_map[fmt] for fmt in formats}
         display.set_matplotlib_formats(*formats)
         for mime, f in formatters.items():
             if mime in active_mimes:
                 nt.assert_in(Figure, f)
             else:
                 nt.assert_not_in(Figure, f)
 
 @dec.skip_without('matplotlib')
 def test_set_matplotlib_formats_kwargs():
     from matplotlib.figure import Figure
     ip = get_ipython()
     cfg = _get_inline_config()
     cfg.print_figure_kwargs.update(dict(foo='bar'))
     kwargs = dict(quality=10)
     display.set_matplotlib_formats('png', **kwargs)
     formatter = ip.display_formatter.formatters['image/png']
     f = formatter.lookup_by_type(Figure)
     cell = f.__closure__[0].cell_contents
     expected = kwargs
     expected.update(cfg.print_figure_kwargs)
     nt.assert_equal(cell, expected)
 
 def test_display_available():
     """
     Test that display is available without import
 
     We don't really care if it's in builtin or anything else, but it should
     always be available.
     """
     ip = get_ipython()
     with AssertNotPrints('NameError'):
         ip.run_cell('display')
     try:
         ip.run_cell('del display')
     except NameError:
         pass # it's ok, it might be in builtins
     # even if deleted it should be back
     with AssertNotPrints('NameError'):
         ip.run_cell('display')
 
 def test_textdisplayobj_pretty_repr():
      p = display.Pretty("This is a simple test")
      nt.assert_equal(repr(p), '<IPython.core.display.Pretty object>')
      nt.assert_equal(p.data, 'This is a simple test')
 
      p._show_mem_addr = True
      nt.assert_equal(repr(p), object.__repr__(p))
 
 def test_displayobject_repr():
     h = display.HTML('<br />')
     nt.assert_equal(repr(h), '<IPython.core.display.HTML object>')
     h._show_mem_addr = True
     nt.assert_equal(repr(h), object.__repr__(h))
     h._show_mem_addr = False
     nt.assert_equal(repr(h), '<IPython.core.display.HTML object>')
 
     j = display.Javascript('')
     nt.assert_equal(repr(j), '<IPython.core.display.Javascript object>')
     j._show_mem_addr = True
     nt.assert_equal(repr(j), object.__repr__(j))
     j._show_mem_addr = False
     nt.assert_equal(repr(j), '<IPython.core.display.Javascript object>')
 
 def test_json():
     d = {'a': 5}
     lis = [d]
     md = {'expanded': False}
     md2 = {'expanded': True}
     j = display.JSON(d)
     j2 = display.JSON(d, expanded=True)
     nt.assert_equal(j._repr_json_(), (d, md))
     nt.assert_equal(j2._repr_json_(), (d, md2))
 
     with warnings.catch_warnings(record=True) as w:
         warnings.simplefilter("always")
         j = display.JSON(json.dumps(d))
         nt.assert_equal(len(w), 1)
         nt.assert_equal(j._repr_json_(), (d, md))
         nt.assert_equal(j2._repr_json_(), (d, md2))
 
     j = display.JSON(lis)
     j2 = display.JSON(lis, expanded=True)
     nt.assert_equal(j._repr_json_(), (lis, md))
     nt.assert_equal(j2._repr_json_(), (lis, md2))
 
     with warnings.catch_warnings(record=True) as w:
         warnings.simplefilter("always")
         j = display.JSON(json.dumps(lis))
         nt.assert_equal(len(w), 1)
         nt.assert_equal(j._repr_json_(), (lis, md))
         nt.assert_equal(j2._repr_json_(), (lis, md2))
 
 def test_video_embedding():
     """use a tempfile, with dummy-data, to ensure that video embedding doesn't crash"""
     v = display.Video("http://ignored")
     assert not v.embed
     html = v._repr_html_()
     nt.assert_not_in('src="data:', html)
     nt.assert_in('src="http://ignored"', html)
 
     with nt.assert_raises(ValueError):
         v = display.Video(b'abc')
 
     with NamedFileInTemporaryDirectory('test.mp4') as f:
         f.write(b'abc')
         f.close()
 
         v = display.Video(f.name)
         assert not v.embed
         html = v._repr_html_()
         nt.assert_not_in('src="data:', html)
 
         v = display.Video(f.name, embed=True)
         html = v._repr_html_()
         nt.assert_in('src="data:video/mp4;base64,YWJj"',html)
 
         v = display.Video(f.name, embed=True, mimetype='video/other')
         html = v._repr_html_()
         nt.assert_in('src="data:video/other;base64,YWJj"',html)
 
         v = display.Video(b'abc', embed=True, mimetype='video/mp4')
         html = v._repr_html_()
         nt.assert_in('src="data:video/mp4;base64,YWJj"',html)
 
         v = display.Video(u'YWJj', embed=True, mimetype='video/xyz')
         html = v._repr_html_()
         nt.assert_in('src="data:video/xyz;base64,YWJj"',html)
 
 
 def test_display_id():
     ip = get_ipython()
     with mock.patch.object(ip.display_pub, 'publish') as pub:
         handle = display.display('x')
         nt.assert_is(handle, None)
         handle = display.display('y', display_id='secret')
         nt.assert_is_instance(handle, display.DisplayHandle)
         handle2 = display.display('z', display_id=True)
         nt.assert_is_instance(handle2, display.DisplayHandle)
     nt.assert_not_equal(handle.display_id, handle2.display_id)
 
     nt.assert_equal(pub.call_count, 3)
     args, kwargs = pub.call_args_list[0]
     nt.assert_equal(args, ())
     nt.assert_equal(kwargs, {
         'data': {
             'text/plain': repr('x')
         },
         'metadata': {},
     })
     args, kwargs = pub.call_args_list[1]
     nt.assert_equal(args, ())
     nt.assert_equal(kwargs, {
         'data': {
             'text/plain': repr('y')
         },
         'metadata': {},
         'transient': {
             'display_id': handle.display_id,
         },
     })
     args, kwargs = pub.call_args_list[2]
     nt.assert_equal(args, ())
     nt.assert_equal(kwargs, {
         'data': {
             'text/plain': repr('z')
         },
         'metadata': {},
         'transient': {
             'display_id': handle2.display_id,
         },
     })
 
 
 def test_update_display():
     ip = get_ipython()
     with mock.patch.object(ip.display_pub, 'publish') as pub:
         with nt.assert_raises(TypeError):
             display.update_display('x')
         display.update_display('x', display_id='1')
         display.update_display('y', display_id='2')
     args, kwargs = pub.call_args_list[0]
     nt.assert_equal(args, ())
     nt.assert_equal(kwargs, {
         'data': {
             'text/plain': repr('x')
         },
         'metadata': {},
         'transient': {
             'display_id': '1',
         },
         'update': True,
     })
     args, kwargs = pub.call_args_list[1]
     nt.assert_equal(args, ())
     nt.assert_equal(kwargs, {
         'data': {
             'text/plain': repr('y')
         },
         'metadata': {},
         'transient': {
             'display_id': '2',
         },
         'update': True,
     })
 
 
 def test_display_handle():
     ip = get_ipython()
     handle = display.DisplayHandle()
     nt.assert_is_instance(handle.display_id, str)
     handle = display.DisplayHandle('my-id')
     nt.assert_equal(handle.display_id, 'my-id')
     with mock.patch.object(ip.display_pub, 'publish') as pub:
         handle.display('x')
         handle.update('y')
 
     args, kwargs = pub.call_args_list[0]
     nt.assert_equal(args, ())
     nt.assert_equal(kwargs, {
         'data': {
             'text/plain': repr('x')
         },
         'metadata': {},
         'transient': {
             'display_id': handle.display_id,
         }
     })
     args, kwargs = pub.call_args_list[1]
     nt.assert_equal(args, ())
     nt.assert_equal(kwargs, {
         'data': {
             'text/plain': repr('y')
         },
         'metadata': {},
         'transient': {
             'display_id': handle.display_id,
         },
         'update': True,
     })
+

IPython/utils/capture.py

@@ -1,167 +1,167 b''
 # encoding: utf-8
 """IO capturing utilities."""
 
 # Copyright (c) IPython Development Team.
 # Distributed under the terms of the Modified BSD License.
 
 
 import sys
 from io import StringIO
 
 #-----------------------------------------------------------------------------
 # Classes and functions
 #-----------------------------------------------------------------------------
 
 
 class RichOutput(object):
     def __init__(self, data=None, metadata=None):
         self.data = data or {}
         self.metadata = metadata or {}
     
     def display(self):
         from IPython.display import publish_display_data
         publish_display_data(data=self.data, metadata=self.metadata)
     
     def _repr_mime_(self, mime):
         if mime not in self.data:
             return
         data = self.data[mime]
         if mime in self.metadata:
             return data, self.metadata[mime]
         else:
             return data
             
+    def _repr_mimebundle_(self, include=None, exclude=None):
+        return self.data, self.metadata
+
     def _repr_html_(self):
         return self._repr_mime_("text/html")
     
     def _repr_latex_(self):
         return self._repr_mime_("text/latex")
     
     def _repr_json_(self):
         return self._repr_mime_("application/json")
     
     def _repr_javascript_(self):
         return self._repr_mime_("application/javascript")
     
     def _repr_png_(self):
         return self._repr_mime_("image/png")
     
     def _repr_jpeg_(self):
         return self._repr_mime_("image/jpeg")
         
-    def _repr_gif_(self):
-        return self._repr_mime_("image/gif")
-    
     def _repr_svg_(self):
         return self._repr_mime_("image/svg+xml")
 
 
 class CapturedIO(object):
     """Simple object for containing captured stdout/err and rich display StringIO objects
 
     Each instance `c` has three attributes:
 
     - ``c.stdout`` : standard output as a string
     - ``c.stderr`` : standard error as a string
     - ``c.outputs``: a list of rich display outputs
 
     Additionally, there's a ``c.show()`` method which will print all of the
     above in the same order, and can be invoked simply via ``c()``.
     """
     
     def __init__(self, stdout, stderr, outputs=None):
         self._stdout = stdout
         self._stderr = stderr
         if outputs is None:
             outputs = []
         self._outputs = outputs
     
     def __str__(self):
         return self.stdout
     
     @property
     def stdout(self):
         "Captured standard output"
         if not self._stdout:
             return ''
         return self._stdout.getvalue()
     
     @property
     def stderr(self):
         "Captured standard error"
         if not self._stderr:
             return ''
         return self._stderr.getvalue()
     
     @property
     def outputs(self):
         """A list of the captured rich display outputs, if any.
         
         If you have a CapturedIO object ``c``, these can be displayed in IPython
         using::
 
             from IPython.display import display
             for o in c.outputs:
                 display(o)
         """
         return [ RichOutput(d, md) for d, md in self._outputs ]
     
     def show(self):
         """write my output to sys.stdout/err as appropriate"""
         sys.stdout.write(self.stdout)
         sys.stderr.write(self.stderr)
         sys.stdout.flush()
         sys.stderr.flush()
         for data, metadata in self._outputs:
             RichOutput(data, metadata).display()
     
     __call__ = show
 
 
 class capture_output(object):
     """context manager for capturing stdout/err"""
     stdout = True
     stderr = True
     display = True
     
     def __init__(self, stdout=True, stderr=True, display=True):
         self.stdout = stdout
         self.stderr = stderr
         self.display = display
         self.shell = None
     
     def __enter__(self):
         from IPython.core.getipython import get_ipython
         from IPython.core.displaypub import CapturingDisplayPublisher
         from IPython.core.displayhook import CapturingDisplayHook
         
         self.sys_stdout = sys.stdout
         self.sys_stderr = sys.stderr
         
         if self.display:
             self.shell = get_ipython()
             if self.shell is None:
                 self.save_display_pub = None
                 self.display = False
         
         stdout = stderr = outputs = None
         if self.stdout:
             stdout = sys.stdout = StringIO()
         if self.stderr:
             stderr = sys.stderr = StringIO()
         if self.display:
             self.save_display_pub = self.shell.display_pub
             self.shell.display_pub = CapturingDisplayPublisher()
             outputs = self.shell.display_pub.outputs
             self.save_display_hook = sys.displayhook
             sys.displayhook = CapturingDisplayHook(shell=self.shell,
                                                    outputs=outputs)
         
         return CapturedIO(stdout, stderr, outputs)
     
     def __exit__(self, exc_type, exc_value, traceback):
         sys.stdout = self.sys_stdout
         sys.stderr = self.sys_stderr
         if self.display and self.shell:
             self.shell.display_pub = self.save_display_pub
             sys.displayhook = self.save_display_hook