|
|
"""Tools for inspecting Python objects.
|
|
|
|
|
|
Uses syntax highlighting for presenting the various information elements.
|
|
|
|
|
|
Similar in spirit to the inspect module, but all calls take a name argument to
|
|
|
reference the name under which an object is being read.
|
|
|
"""
|
|
|
|
|
|
# Copyright (c) IPython Development Team.
|
|
|
# Distributed under the terms of the Modified BSD License.
|
|
|
|
|
|
__all__ = ['Inspector','InspectColors']
|
|
|
|
|
|
# stdlib modules
|
|
|
from dataclasses import dataclass
|
|
|
from inspect import signature
|
|
|
from textwrap import dedent
|
|
|
import ast
|
|
|
import html
|
|
|
import inspect
|
|
|
import io as stdlib_io
|
|
|
import linecache
|
|
|
import os
|
|
|
import types
|
|
|
import warnings
|
|
|
|
|
|
|
|
|
from typing import (
|
|
|
cast,
|
|
|
Any,
|
|
|
Optional,
|
|
|
Dict,
|
|
|
Union,
|
|
|
List,
|
|
|
TypedDict,
|
|
|
TypeAlias,
|
|
|
Tuple,
|
|
|
)
|
|
|
|
|
|
import traitlets
|
|
|
|
|
|
# IPython's own
|
|
|
from IPython.core import page
|
|
|
from IPython.lib.pretty import pretty
|
|
|
from IPython.testing.skipdoctest import skip_doctest
|
|
|
from IPython.utils import PyColorize, openpy
|
|
|
from IPython.utils.dir2 import safe_hasattr
|
|
|
from IPython.utils.path import compress_user
|
|
|
from IPython.utils.text import indent
|
|
|
from IPython.utils.wildcard import list_namespace, typestr2type
|
|
|
from IPython.utils.coloransi import TermColors
|
|
|
from IPython.utils.colorable import Colorable
|
|
|
from IPython.utils.decorators import undoc
|
|
|
|
|
|
from pygments import highlight
|
|
|
from pygments.lexers import PythonLexer
|
|
|
from pygments.formatters import HtmlFormatter
|
|
|
|
|
|
HOOK_NAME = "__custom_documentations__"
|
|
|
|
|
|
|
|
|
UnformattedBundle: TypeAlias = Dict[str, List[Tuple[str, str]]] # List of (title, body)
|
|
|
Bundle: TypeAlias = Dict[str, str]
|
|
|
|
|
|
|
|
|
@dataclass
|
|
|
class OInfo:
|
|
|
ismagic: bool
|
|
|
isalias: bool
|
|
|
found: bool
|
|
|
namespace: Optional[str]
|
|
|
parent: Any
|
|
|
obj: Any
|
|
|
|
|
|
def get(self, field):
|
|
|
"""Get a field from the object for backward compatibility with before 8.12
|
|
|
|
|
|
see https://github.com/h5py/h5py/issues/2253
|
|
|
"""
|
|
|
# We need to deprecate this at some point, but the warning will show in completion.
|
|
|
# Let's comment this for now and uncomment end of 2023 ish
|
|
|
# warnings.warn(
|
|
|
# f"OInfo dataclass with fields access since IPython 8.12 please use OInfo.{field} instead."
|
|
|
# "OInfo used to be a dict but a dataclass provide static fields verification with mypy."
|
|
|
# "This warning and backward compatibility `get()` method were added in 8.13.",
|
|
|
# DeprecationWarning,
|
|
|
# stacklevel=2,
|
|
|
# )
|
|
|
return getattr(self, field)
|
|
|
|
|
|
|
|
|
def pylight(code):
|
|
|
return highlight(code, PythonLexer(), HtmlFormatter(noclasses=True))
|
|
|
|
|
|
# builtin docstrings to ignore
|
|
|
_func_call_docstring = types.FunctionType.__call__.__doc__
|
|
|
_object_init_docstring = object.__init__.__doc__
|
|
|
_builtin_type_docstrings = {
|
|
|
inspect.getdoc(t) for t in (types.ModuleType, types.MethodType,
|
|
|
types.FunctionType, property)
|
|
|
}
|
|
|
|
|
|
_builtin_func_type = type(all)
|
|
|
_builtin_meth_type = type(str.upper) # Bound methods have the same type as builtin functions
|
|
|
#****************************************************************************
|
|
|
# Builtin color schemes
|
|
|
|
|
|
Colors = TermColors # just a shorthand
|
|
|
|
|
|
InspectColors = PyColorize.ANSICodeColors
|
|
|
|
|
|
#****************************************************************************
|
|
|
# Auxiliary functions and objects
|
|
|
|
|
|
|
|
|
class InfoDict(TypedDict):
|
|
|
type_name: Optional[str]
|
|
|
base_class: Optional[str]
|
|
|
string_form: Optional[str]
|
|
|
namespace: Optional[str]
|
|
|
length: Optional[str]
|
|
|
file: Optional[str]
|
|
|
definition: Optional[str]
|
|
|
docstring: Optional[str]
|
|
|
source: Optional[str]
|
|
|
init_definition: Optional[str]
|
|
|
class_docstring: Optional[str]
|
|
|
init_docstring: Optional[str]
|
|
|
call_def: Optional[str]
|
|
|
call_docstring: Optional[str]
|
|
|
subclasses: Optional[str]
|
|
|
# These won't be printed but will be used to determine how to
|
|
|
# format the object
|
|
|
ismagic: bool
|
|
|
isalias: bool
|
|
|
isclass: bool
|
|
|
found: bool
|
|
|
name: str
|
|
|
|
|
|
|
|
|
_info_fields = list(InfoDict.__annotations__.keys())
|
|
|
|
|
|
|
|
|
def __getattr__(name):
|
|
|
if name == "info_fields":
|
|
|
warnings.warn(
|
|
|
"IPython.core.oinspect's `info_fields` is considered for deprecation and may be removed in the Future. ",
|
|
|
DeprecationWarning,
|
|
|
stacklevel=2,
|
|
|
)
|
|
|
return _info_fields
|
|
|
|
|
|
raise AttributeError(f"module {__name__!r} has no attribute {name!r}")
|
|
|
|
|
|
|
|
|
@dataclass
|
|
|
class InspectorHookData:
|
|
|
"""Data passed to the mime hook"""
|
|
|
|
|
|
obj: Any
|
|
|
info: Optional[OInfo]
|
|
|
info_dict: InfoDict
|
|
|
detail_level: int
|
|
|
omit_sections: list[str]
|
|
|
|
|
|
|
|
|
@undoc
|
|
|
def object_info(
|
|
|
*,
|
|
|
name: str,
|
|
|
found: bool,
|
|
|
isclass: bool = False,
|
|
|
isalias: bool = False,
|
|
|
ismagic: bool = False,
|
|
|
**kw,
|
|
|
) -> InfoDict:
|
|
|
"""Make an object info dict with all fields present."""
|
|
|
infodict = kw
|
|
|
infodict = {k: None for k in _info_fields if k not in infodict}
|
|
|
infodict["name"] = name # type: ignore
|
|
|
infodict["found"] = found # type: ignore
|
|
|
infodict["isclass"] = isclass # type: ignore
|
|
|
infodict["isalias"] = isalias # type: ignore
|
|
|
infodict["ismagic"] = ismagic # type: ignore
|
|
|
|
|
|
return InfoDict(**infodict) # type:ignore
|
|
|
|
|
|
|
|
|
def get_encoding(obj):
|
|
|
"""Get encoding for python source file defining obj
|
|
|
|
|
|
Returns None if obj is not defined in a sourcefile.
|
|
|
"""
|
|
|
ofile = find_file(obj)
|
|
|
# run contents of file through pager starting at line where the object
|
|
|
# is defined, as long as the file isn't binary and is actually on the
|
|
|
# filesystem.
|
|
|
if ofile is None:
|
|
|
return None
|
|
|
elif ofile.endswith(('.so', '.dll', '.pyd')):
|
|
|
return None
|
|
|
elif not os.path.isfile(ofile):
|
|
|
return None
|
|
|
else:
|
|
|
# Print only text files, not extension binaries. Note that
|
|
|
# getsourcelines returns lineno with 1-offset and page() uses
|
|
|
# 0-offset, so we must adjust.
|
|
|
with stdlib_io.open(ofile, 'rb') as buffer: # Tweaked to use io.open for Python 2
|
|
|
encoding, _lines = openpy.detect_encoding(buffer.readline)
|
|
|
return encoding
|
|
|
|
|
|
|
|
|
def getdoc(obj) -> Union[str, None]:
|
|
|
"""Stable wrapper around inspect.getdoc.
|
|
|
|
|
|
This can't crash because of attribute problems.
|
|
|
|
|
|
It also attempts to call a getdoc() method on the given object. This
|
|
|
allows objects which provide their docstrings via non-standard mechanisms
|
|
|
(like Pyro proxies) to still be inspected by ipython's ? system.
|
|
|
"""
|
|
|
# Allow objects to offer customized documentation via a getdoc method:
|
|
|
try:
|
|
|
ds = obj.getdoc()
|
|
|
except Exception:
|
|
|
pass
|
|
|
else:
|
|
|
if isinstance(ds, str):
|
|
|
return inspect.cleandoc(ds)
|
|
|
docstr = inspect.getdoc(obj)
|
|
|
return docstr
|
|
|
|
|
|
|
|
|
def getsource(obj, oname='') -> Union[str,None]:
|
|
|
"""Wrapper around inspect.getsource.
|
|
|
|
|
|
This can be modified by other projects to provide customized source
|
|
|
extraction.
|
|
|
|
|
|
Parameters
|
|
|
----------
|
|
|
obj : object
|
|
|
an object whose source code we will attempt to extract
|
|
|
oname : str
|
|
|
(optional) a name under which the object is known
|
|
|
|
|
|
Returns
|
|
|
-------
|
|
|
src : unicode or None
|
|
|
|
|
|
"""
|
|
|
|
|
|
if isinstance(obj, property):
|
|
|
sources = []
|
|
|
for attrname in ['fget', 'fset', 'fdel']:
|
|
|
fn = getattr(obj, attrname)
|
|
|
if fn is not None:
|
|
|
encoding = get_encoding(fn)
|
|
|
oname_prefix = ('%s.' % oname) if oname else ''
|
|
|
sources.append(''.join(('# ', oname_prefix, attrname)))
|
|
|
if inspect.isfunction(fn):
|
|
|
_src = getsource(fn)
|
|
|
if _src:
|
|
|
# assert _src is not None, "please mypy"
|
|
|
sources.append(dedent(_src))
|
|
|
else:
|
|
|
# Default str/repr only prints function name,
|
|
|
# pretty.pretty prints module name too.
|
|
|
sources.append(
|
|
|
'%s%s = %s\n' % (oname_prefix, attrname, pretty(fn))
|
|
|
)
|
|
|
if sources:
|
|
|
return '\n'.join(sources)
|
|
|
else:
|
|
|
return None
|
|
|
|
|
|
else:
|
|
|
# Get source for non-property objects.
|
|
|
|
|
|
obj = _get_wrapped(obj)
|
|
|
|
|
|
try:
|
|
|
src = inspect.getsource(obj)
|
|
|
except TypeError:
|
|
|
# The object itself provided no meaningful source, try looking for
|
|
|
# its class definition instead.
|
|
|
try:
|
|
|
src = inspect.getsource(obj.__class__)
|
|
|
except (OSError, TypeError):
|
|
|
return None
|
|
|
except OSError:
|
|
|
return None
|
|
|
|
|
|
return src
|
|
|
|
|
|
|
|
|
def is_simple_callable(obj):
|
|
|
"""True if obj is a function ()"""
|
|
|
return (inspect.isfunction(obj) or inspect.ismethod(obj) or \
|
|
|
isinstance(obj, _builtin_func_type) or isinstance(obj, _builtin_meth_type))
|
|
|
|
|
|
@undoc
|
|
|
def getargspec(obj):
|
|
|
"""Wrapper around :func:`inspect.getfullargspec`
|
|
|
|
|
|
In addition to functions and methods, this can also handle objects with a
|
|
|
``__call__`` attribute.
|
|
|
|
|
|
DEPRECATED: Deprecated since 7.10. Do not use, will be removed.
|
|
|
"""
|
|
|
|
|
|
warnings.warn('`getargspec` function is deprecated as of IPython 7.10'
|
|
|
'and will be removed in future versions.', DeprecationWarning, stacklevel=2)
|
|
|
|
|
|
if safe_hasattr(obj, '__call__') and not is_simple_callable(obj):
|
|
|
obj = obj.__call__
|
|
|
|
|
|
return inspect.getfullargspec(obj)
|
|
|
|
|
|
@undoc
|
|
|
def format_argspec(argspec):
|
|
|
"""Format argspect, convenience wrapper around inspect's.
|
|
|
|
|
|
This takes a dict instead of ordered arguments and calls
|
|
|
inspect.format_argspec with the arguments in the necessary order.
|
|
|
|
|
|
DEPRECATED (since 7.10): Do not use; will be removed in future versions.
|
|
|
"""
|
|
|
|
|
|
warnings.warn('`format_argspec` function is deprecated as of IPython 7.10'
|
|
|
'and will be removed in future versions.', DeprecationWarning, stacklevel=2)
|
|
|
|
|
|
|
|
|
return inspect.formatargspec(argspec['args'], argspec['varargs'],
|
|
|
argspec['varkw'], argspec['defaults'])
|
|
|
|
|
|
@undoc
|
|
|
def call_tip(oinfo, format_call=True):
|
|
|
"""DEPRECATED since 6.0. Extract call tip data from an oinfo dict."""
|
|
|
warnings.warn(
|
|
|
"`call_tip` function is deprecated as of IPython 6.0"
|
|
|
"and will be removed in future versions.",
|
|
|
DeprecationWarning,
|
|
|
stacklevel=2,
|
|
|
)
|
|
|
# Get call definition
|
|
|
argspec = oinfo.get('argspec')
|
|
|
if argspec is None:
|
|
|
call_line = None
|
|
|
else:
|
|
|
# Callable objects will have 'self' as their first argument, prune
|
|
|
# it out if it's there for clarity (since users do *not* pass an
|
|
|
# extra first argument explicitly).
|
|
|
try:
|
|
|
has_self = argspec['args'][0] == 'self'
|
|
|
except (KeyError, IndexError):
|
|
|
pass
|
|
|
else:
|
|
|
if has_self:
|
|
|
argspec['args'] = argspec['args'][1:]
|
|
|
|
|
|
call_line = oinfo['name']+format_argspec(argspec)
|
|
|
|
|
|
# Now get docstring.
|
|
|
# The priority is: call docstring, constructor docstring, main one.
|
|
|
doc = oinfo.get('call_docstring')
|
|
|
if doc is None:
|
|
|
doc = oinfo.get('init_docstring')
|
|
|
if doc is None:
|
|
|
doc = oinfo.get('docstring','')
|
|
|
|
|
|
return call_line, doc
|
|
|
|
|
|
|
|
|
def _get_wrapped(obj):
|
|
|
"""Get the original object if wrapped in one or more @decorators
|
|
|
|
|
|
Some objects automatically construct similar objects on any unrecognised
|
|
|
attribute access (e.g. unittest.mock.call). To protect against infinite loops,
|
|
|
this will arbitrarily cut off after 100 levels of obj.__wrapped__
|
|
|
attribute access. --TK, Jan 2016
|
|
|
"""
|
|
|
orig_obj = obj
|
|
|
i = 0
|
|
|
while safe_hasattr(obj, '__wrapped__'):
|
|
|
obj = obj.__wrapped__
|
|
|
i += 1
|
|
|
if i > 100:
|
|
|
# __wrapped__ is probably a lie, so return the thing we started with
|
|
|
return orig_obj
|
|
|
return obj
|
|
|
|
|
|
def find_file(obj) -> Optional[str]:
|
|
|
"""Find the absolute path to the file where an object was defined.
|
|
|
|
|
|
This is essentially a robust wrapper around `inspect.getabsfile`.
|
|
|
|
|
|
Returns None if no file can be found.
|
|
|
|
|
|
Parameters
|
|
|
----------
|
|
|
obj : any Python object
|
|
|
|
|
|
Returns
|
|
|
-------
|
|
|
fname : str
|
|
|
The absolute path to the file where the object was defined.
|
|
|
"""
|
|
|
obj = _get_wrapped(obj)
|
|
|
|
|
|
fname: Optional[str] = None
|
|
|
try:
|
|
|
fname = inspect.getabsfile(obj)
|
|
|
except TypeError:
|
|
|
# For an instance, the file that matters is where its class was
|
|
|
# declared.
|
|
|
try:
|
|
|
fname = inspect.getabsfile(obj.__class__)
|
|
|
except (OSError, TypeError):
|
|
|
# Can happen for builtins
|
|
|
pass
|
|
|
except OSError:
|
|
|
pass
|
|
|
|
|
|
return fname
|
|
|
|
|
|
|
|
|
def find_source_lines(obj):
|
|
|
"""Find the line number in a file where an object was defined.
|
|
|
|
|
|
This is essentially a robust wrapper around `inspect.getsourcelines`.
|
|
|
|
|
|
Returns None if no file can be found.
|
|
|
|
|
|
Parameters
|
|
|
----------
|
|
|
obj : any Python object
|
|
|
|
|
|
Returns
|
|
|
-------
|
|
|
lineno : int
|
|
|
The line number where the object definition starts.
|
|
|
"""
|
|
|
obj = _get_wrapped(obj)
|
|
|
|
|
|
try:
|
|
|
lineno = inspect.getsourcelines(obj)[1]
|
|
|
except TypeError:
|
|
|
# For instances, try the class object like getsource() does
|
|
|
try:
|
|
|
lineno = inspect.getsourcelines(obj.__class__)[1]
|
|
|
except (OSError, TypeError):
|
|
|
return None
|
|
|
except OSError:
|
|
|
return None
|
|
|
|
|
|
return lineno
|
|
|
|
|
|
class Inspector(Colorable):
|
|
|
|
|
|
mime_hooks = traitlets.Dict(
|
|
|
config=True,
|
|
|
help="dictionary of mime to callable to add informations into help mimebundle dict",
|
|
|
).tag(config=True)
|
|
|
|
|
|
def __init__(
|
|
|
self,
|
|
|
color_table=InspectColors,
|
|
|
code_color_table=PyColorize.ANSICodeColors,
|
|
|
scheme=None,
|
|
|
str_detail_level=0,
|
|
|
parent=None,
|
|
|
config=None,
|
|
|
):
|
|
|
super(Inspector, self).__init__(parent=parent, config=config)
|
|
|
self.color_table = color_table
|
|
|
self.parser = PyColorize.Parser(out='str', parent=self, style=scheme)
|
|
|
self.format = self.parser.format
|
|
|
self.str_detail_level = str_detail_level
|
|
|
self.set_active_scheme(scheme)
|
|
|
|
|
|
def _getdef(self,obj,oname='') -> Union[str,None]:
|
|
|
"""Return the call signature for any callable object.
|
|
|
|
|
|
If any exception is generated, None is returned instead and the
|
|
|
exception is suppressed."""
|
|
|
if not callable(obj):
|
|
|
return None
|
|
|
try:
|
|
|
return _render_signature(signature(obj), oname)
|
|
|
except:
|
|
|
return None
|
|
|
|
|
|
def __head(self,h) -> str:
|
|
|
"""Return a header string with proper colors."""
|
|
|
return '%s%s%s' % (self.color_table.active_colors.header,h,
|
|
|
self.color_table.active_colors.normal)
|
|
|
|
|
|
def set_active_scheme(self, scheme):
|
|
|
if scheme is not None:
|
|
|
self.color_table.set_active_scheme(scheme)
|
|
|
self.parser.color_table.set_active_scheme(scheme)
|
|
|
|
|
|
def noinfo(self, msg, oname):
|
|
|
"""Generic message when no information is found."""
|
|
|
print('No %s found' % msg, end=' ')
|
|
|
if oname:
|
|
|
print('for %s' % oname)
|
|
|
else:
|
|
|
print()
|
|
|
|
|
|
def pdef(self, obj, oname=''):
|
|
|
"""Print the call signature for any callable object.
|
|
|
|
|
|
If the object is a class, print the constructor information."""
|
|
|
|
|
|
if not callable(obj):
|
|
|
print('Object is not callable.')
|
|
|
return
|
|
|
|
|
|
header = ''
|
|
|
|
|
|
if inspect.isclass(obj):
|
|
|
header = self.__head('Class constructor information:\n')
|
|
|
|
|
|
|
|
|
output = self._getdef(obj,oname)
|
|
|
if output is None:
|
|
|
self.noinfo('definition header',oname)
|
|
|
else:
|
|
|
print(header,self.format(output), end=' ')
|
|
|
|
|
|
# In Python 3, all classes are new-style, so they all have __init__.
|
|
|
@skip_doctest
|
|
|
def pdoc(self, obj, oname='', formatter=None):
|
|
|
"""Print the docstring for any object.
|
|
|
|
|
|
Optional:
|
|
|
-formatter: a function to run the docstring through for specially
|
|
|
formatted docstrings.
|
|
|
|
|
|
Examples
|
|
|
--------
|
|
|
In [1]: class NoInit:
|
|
|
...: pass
|
|
|
|
|
|
In [2]: class NoDoc:
|
|
|
...: def __init__(self):
|
|
|
...: pass
|
|
|
|
|
|
In [3]: %pdoc NoDoc
|
|
|
No documentation found for NoDoc
|
|
|
|
|
|
In [4]: %pdoc NoInit
|
|
|
No documentation found for NoInit
|
|
|
|
|
|
In [5]: obj = NoInit()
|
|
|
|
|
|
In [6]: %pdoc obj
|
|
|
No documentation found for obj
|
|
|
|
|
|
In [5]: obj2 = NoDoc()
|
|
|
|
|
|
In [6]: %pdoc obj2
|
|
|
No documentation found for obj2
|
|
|
"""
|
|
|
|
|
|
head = self.__head # For convenience
|
|
|
lines = []
|
|
|
ds = getdoc(obj)
|
|
|
if formatter:
|
|
|
ds = formatter(ds).get('plain/text', ds)
|
|
|
if ds:
|
|
|
lines.append(head("Class docstring:"))
|
|
|
lines.append(indent(ds))
|
|
|
if inspect.isclass(obj) and hasattr(obj, '__init__'):
|
|
|
init_ds = getdoc(obj.__init__)
|
|
|
if init_ds is not None:
|
|
|
lines.append(head("Init docstring:"))
|
|
|
lines.append(indent(init_ds))
|
|
|
elif hasattr(obj,'__call__'):
|
|
|
call_ds = getdoc(obj.__call__)
|
|
|
if call_ds:
|
|
|
lines.append(head("Call docstring:"))
|
|
|
lines.append(indent(call_ds))
|
|
|
|
|
|
if not lines:
|
|
|
self.noinfo('documentation',oname)
|
|
|
else:
|
|
|
page.page('\n'.join(lines))
|
|
|
|
|
|
def psource(self, obj, oname=''):
|
|
|
"""Print the source code for an object."""
|
|
|
|
|
|
# Flush the source cache because inspect can return out-of-date source
|
|
|
linecache.checkcache()
|
|
|
try:
|
|
|
src = getsource(obj, oname=oname)
|
|
|
except Exception:
|
|
|
src = None
|
|
|
|
|
|
if src is None:
|
|
|
self.noinfo('source', oname)
|
|
|
else:
|
|
|
page.page(self.format(src))
|
|
|
|
|
|
def pfile(self, obj, oname=''):
|
|
|
"""Show the whole file where an object was defined."""
|
|
|
|
|
|
lineno = find_source_lines(obj)
|
|
|
if lineno is None:
|
|
|
self.noinfo('file', oname)
|
|
|
return
|
|
|
|
|
|
ofile = find_file(obj)
|
|
|
# run contents of file through pager starting at line where the object
|
|
|
# is defined, as long as the file isn't binary and is actually on the
|
|
|
# filesystem.
|
|
|
if ofile is None:
|
|
|
print("Could not find file for object")
|
|
|
elif ofile.endswith((".so", ".dll", ".pyd")):
|
|
|
print("File %r is binary, not printing." % ofile)
|
|
|
elif not os.path.isfile(ofile):
|
|
|
print('File %r does not exist, not printing.' % ofile)
|
|
|
else:
|
|
|
# Print only text files, not extension binaries. Note that
|
|
|
# getsourcelines returns lineno with 1-offset and page() uses
|
|
|
# 0-offset, so we must adjust.
|
|
|
page.page(self.format(openpy.read_py_file(ofile, skip_encoding_cookie=False)), lineno - 1)
|
|
|
|
|
|
|
|
|
def _mime_format(self, text:str, formatter=None) -> dict:
|
|
|
"""Return a mime bundle representation of the input text.
|
|
|
|
|
|
- if `formatter` is None, the returned mime bundle has
|
|
|
a ``text/plain`` field, with the input text.
|
|
|
a ``text/html`` field with a ``<pre>`` tag containing the input text.
|
|
|
|
|
|
- if ``formatter`` is not None, it must be a callable transforming the
|
|
|
input text into a mime bundle. Default values for ``text/plain`` and
|
|
|
``text/html`` representations are the ones described above.
|
|
|
|
|
|
Note:
|
|
|
|
|
|
Formatters returning strings are supported but this behavior is deprecated.
|
|
|
|
|
|
"""
|
|
|
defaults = {
|
|
|
"text/plain": text,
|
|
|
"text/html": f"<pre>{html.escape(text)}</pre>",
|
|
|
}
|
|
|
|
|
|
if formatter is None:
|
|
|
return defaults
|
|
|
else:
|
|
|
formatted = formatter(text)
|
|
|
|
|
|
if not isinstance(formatted, dict):
|
|
|
# Handle the deprecated behavior of a formatter returning
|
|
|
# a string instead of a mime bundle.
|
|
|
return {"text/plain": formatted, "text/html": f"<pre>{formatted}</pre>"}
|
|
|
|
|
|
else:
|
|
|
return dict(defaults, **formatted)
|
|
|
|
|
|
def format_mime(self, bundle: UnformattedBundle) -> Bundle:
|
|
|
"""Format a mimebundle being created by _make_info_unformatted into a real mimebundle"""
|
|
|
# Format text/plain mimetype
|
|
|
assert isinstance(bundle["text/plain"], list)
|
|
|
for item in bundle["text/plain"]:
|
|
|
assert isinstance(item, tuple)
|
|
|
|
|
|
new_b: Bundle = {}
|
|
|
lines = []
|
|
|
_len = max(len(h) for h, _ in bundle["text/plain"])
|
|
|
|
|
|
for head, body in bundle["text/plain"]:
|
|
|
body = body.strip("\n")
|
|
|
delim = "\n" if "\n" in body else " "
|
|
|
lines.append(
|
|
|
f"{self.__head(head+':')}{(_len - len(head))*' '}{delim}{body}"
|
|
|
)
|
|
|
|
|
|
new_b["text/plain"] = "\n".join(lines)
|
|
|
|
|
|
if "text/html" in bundle:
|
|
|
assert isinstance(bundle["text/html"], list)
|
|
|
for item in bundle["text/html"]:
|
|
|
assert isinstance(item, tuple)
|
|
|
# Format the text/html mimetype
|
|
|
if isinstance(bundle["text/html"], (list, tuple)):
|
|
|
# bundle['text/html'] is a list of (head, formatted body) pairs
|
|
|
new_b["text/html"] = "\n".join(
|
|
|
(f"<h1>{head}</h1>\n{body}" for (head, body) in bundle["text/html"])
|
|
|
)
|
|
|
|
|
|
for k in bundle.keys():
|
|
|
if k in ("text/html", "text/plain"):
|
|
|
continue
|
|
|
else:
|
|
|
new_b[k] = bundle[k] # type:ignore
|
|
|
return new_b
|
|
|
|
|
|
def _append_info_field(
|
|
|
self,
|
|
|
bundle: UnformattedBundle,
|
|
|
title: str,
|
|
|
key: str,
|
|
|
info,
|
|
|
omit_sections: List[str],
|
|
|
formatter,
|
|
|
):
|
|
|
"""Append an info value to the unformatted mimebundle being constructed by _make_info_unformatted"""
|
|
|
if title in omit_sections or key in omit_sections:
|
|
|
return
|
|
|
field = info[key]
|
|
|
if field is not None:
|
|
|
formatted_field = self._mime_format(field, formatter)
|
|
|
bundle["text/plain"].append((title, formatted_field["text/plain"]))
|
|
|
bundle["text/html"].append((title, formatted_field["text/html"]))
|
|
|
|
|
|
def _make_info_unformatted(
|
|
|
self, obj, info, formatter, detail_level, omit_sections
|
|
|
) -> UnformattedBundle:
|
|
|
"""Assemble the mimebundle as unformatted lists of information"""
|
|
|
bundle: UnformattedBundle = {
|
|
|
"text/plain": [],
|
|
|
"text/html": [],
|
|
|
}
|
|
|
|
|
|
# A convenience function to simplify calls below
|
|
|
def append_field(
|
|
|
bundle: UnformattedBundle, title: str, key: str, formatter=None
|
|
|
):
|
|
|
self._append_info_field(
|
|
|
bundle,
|
|
|
title=title,
|
|
|
key=key,
|
|
|
info=info,
|
|
|
omit_sections=omit_sections,
|
|
|
formatter=formatter,
|
|
|
)
|
|
|
|
|
|
def code_formatter(text) -> Bundle:
|
|
|
return {
|
|
|
'text/plain': self.format(text),
|
|
|
'text/html': pylight(text)
|
|
|
}
|
|
|
|
|
|
if info["isalias"]:
|
|
|
append_field(bundle, "Repr", "string_form")
|
|
|
|
|
|
elif info['ismagic']:
|
|
|
if detail_level > 0:
|
|
|
append_field(bundle, "Source", "source", code_formatter)
|
|
|
else:
|
|
|
append_field(bundle, "Docstring", "docstring", formatter)
|
|
|
append_field(bundle, "File", "file")
|
|
|
|
|
|
elif info['isclass'] or is_simple_callable(obj):
|
|
|
# Functions, methods, classes
|
|
|
append_field(bundle, "Signature", "definition", code_formatter)
|
|
|
append_field(bundle, "Init signature", "init_definition", code_formatter)
|
|
|
append_field(bundle, "Docstring", "docstring", formatter)
|
|
|
if detail_level > 0 and info["source"]:
|
|
|
append_field(bundle, "Source", "source", code_formatter)
|
|
|
else:
|
|
|
append_field(bundle, "Init docstring", "init_docstring", formatter)
|
|
|
|
|
|
append_field(bundle, "File", "file")
|
|
|
append_field(bundle, "Type", "type_name")
|
|
|
append_field(bundle, "Subclasses", "subclasses")
|
|
|
|
|
|
else:
|
|
|
# General Python objects
|
|
|
append_field(bundle, "Signature", "definition", code_formatter)
|
|
|
append_field(bundle, "Call signature", "call_def", code_formatter)
|
|
|
append_field(bundle, "Type", "type_name")
|
|
|
append_field(bundle, "String form", "string_form")
|
|
|
|
|
|
# Namespace
|
|
|
if info["namespace"] != "Interactive":
|
|
|
append_field(bundle, "Namespace", "namespace")
|
|
|
|
|
|
append_field(bundle, "Length", "length")
|
|
|
append_field(bundle, "File", "file")
|
|
|
|
|
|
# Source or docstring, depending on detail level and whether
|
|
|
# source found.
|
|
|
if detail_level > 0 and info["source"]:
|
|
|
append_field(bundle, "Source", "source", code_formatter)
|
|
|
else:
|
|
|
append_field(bundle, "Docstring", "docstring", formatter)
|
|
|
|
|
|
append_field(bundle, "Class docstring", "class_docstring", formatter)
|
|
|
append_field(bundle, "Init docstring", "init_docstring", formatter)
|
|
|
append_field(bundle, "Call docstring", "call_docstring", formatter)
|
|
|
return bundle
|
|
|
|
|
|
|
|
|
def _get_info(
|
|
|
self,
|
|
|
obj: Any,
|
|
|
oname: str = "",
|
|
|
formatter=None,
|
|
|
info: Optional[OInfo] = None,
|
|
|
detail_level: int = 0,
|
|
|
omit_sections: Union[List[str], Tuple[()]] = (),
|
|
|
) -> Bundle:
|
|
|
"""Retrieve an info dict and format it.
|
|
|
|
|
|
Parameters
|
|
|
----------
|
|
|
obj : any
|
|
|
Object to inspect and return info from
|
|
|
oname : str (default: ''):
|
|
|
Name of the variable pointing to `obj`.
|
|
|
formatter : callable
|
|
|
info
|
|
|
already computed information
|
|
|
detail_level : integer
|
|
|
Granularity of detail level, if set to 1, give more information.
|
|
|
omit_sections : list[str]
|
|
|
Titles or keys to omit from output (can be set, tuple, etc., anything supporting `in`)
|
|
|
"""
|
|
|
|
|
|
info_dict = self.info(obj, oname=oname, info=info, detail_level=detail_level)
|
|
|
omit_sections = list(omit_sections)
|
|
|
|
|
|
bundle = self._make_info_unformatted(
|
|
|
obj,
|
|
|
info_dict,
|
|
|
formatter,
|
|
|
detail_level=detail_level,
|
|
|
omit_sections=omit_sections,
|
|
|
)
|
|
|
if self.mime_hooks:
|
|
|
hook_data = InspectorHookData(
|
|
|
obj=obj,
|
|
|
info=info,
|
|
|
info_dict=info_dict,
|
|
|
detail_level=detail_level,
|
|
|
omit_sections=omit_sections,
|
|
|
)
|
|
|
for key, hook in self.mime_hooks.items(): # type:ignore
|
|
|
required_parameters = [
|
|
|
parameter
|
|
|
for parameter in inspect.signature(hook).parameters.values()
|
|
|
if parameter.default != inspect.Parameter.default
|
|
|
]
|
|
|
if len(required_parameters) == 1:
|
|
|
res = hook(hook_data)
|
|
|
else:
|
|
|
warnings.warn(
|
|
|
"MIME hook format changed in IPython 8.22; hooks should now accept"
|
|
|
" a single parameter (InspectorHookData); support for hooks requiring"
|
|
|
" two-parameters (obj and info) will be removed in a future version",
|
|
|
DeprecationWarning,
|
|
|
stacklevel=2,
|
|
|
)
|
|
|
res = hook(obj, info)
|
|
|
if res is not None:
|
|
|
bundle[key] = res
|
|
|
return self.format_mime(bundle)
|
|
|
|
|
|
def pinfo(
|
|
|
self,
|
|
|
obj,
|
|
|
oname="",
|
|
|
formatter=None,
|
|
|
info: Optional[OInfo] = None,
|
|
|
detail_level=0,
|
|
|
enable_html_pager=True,
|
|
|
omit_sections=(),
|
|
|
):
|
|
|
"""Show detailed information about an object.
|
|
|
|
|
|
Optional arguments:
|
|
|
|
|
|
- oname: name of the variable pointing to the object.
|
|
|
|
|
|
- formatter: callable (optional)
|
|
|
A special formatter for docstrings.
|
|
|
|
|
|
The formatter is a callable that takes a string as an input
|
|
|
and returns either a formatted string or a mime type bundle
|
|
|
in the form of a dictionary.
|
|
|
|
|
|
Although the support of custom formatter returning a string
|
|
|
instead of a mime type bundle is deprecated.
|
|
|
|
|
|
- info: a structure with some information fields which may have been
|
|
|
precomputed already.
|
|
|
|
|
|
- detail_level: if set to 1, more information is given.
|
|
|
|
|
|
- omit_sections: set of section keys and titles to omit
|
|
|
"""
|
|
|
assert info is not None
|
|
|
info_b: Bundle = self._get_info(
|
|
|
obj, oname, formatter, info, detail_level, omit_sections=omit_sections
|
|
|
)
|
|
|
if not enable_html_pager:
|
|
|
del info_b["text/html"]
|
|
|
page.page(info_b)
|
|
|
|
|
|
def _info(self, obj, oname="", info=None, detail_level=0):
|
|
|
"""
|
|
|
Inspector.info() was likely improperly marked as deprecated
|
|
|
while only a parameter was deprecated. We "un-deprecate" it.
|
|
|
"""
|
|
|
|
|
|
warnings.warn(
|
|
|
"The `Inspector.info()` method has been un-deprecated as of 8.0 "
|
|
|
"and the `formatter=` keyword removed. `Inspector._info` is now "
|
|
|
"an alias, and you can just call `.info()` directly.",
|
|
|
DeprecationWarning,
|
|
|
stacklevel=2,
|
|
|
)
|
|
|
return self.info(obj, oname=oname, info=info, detail_level=detail_level)
|
|
|
|
|
|
def info(self, obj, oname="", info=None, detail_level=0) -> InfoDict:
|
|
|
"""Compute a dict with detailed information about an object.
|
|
|
|
|
|
Parameters
|
|
|
----------
|
|
|
obj : any
|
|
|
An object to find information about
|
|
|
oname : str (default: '')
|
|
|
Name of the variable pointing to `obj`.
|
|
|
info : (default: None)
|
|
|
A struct (dict like with attr access) with some information fields
|
|
|
which may have been precomputed already.
|
|
|
detail_level : int (default:0)
|
|
|
If set to 1, more information is given.
|
|
|
|
|
|
Returns
|
|
|
-------
|
|
|
An object info dict with known fields from `info_fields` (see `InfoDict`).
|
|
|
"""
|
|
|
|
|
|
if info is None:
|
|
|
ismagic = False
|
|
|
isalias = False
|
|
|
ospace = ''
|
|
|
else:
|
|
|
ismagic = info.ismagic
|
|
|
isalias = info.isalias
|
|
|
ospace = info.namespace
|
|
|
|
|
|
# Get docstring, special-casing aliases:
|
|
|
att_name = oname.split(".")[-1]
|
|
|
parents_docs = None
|
|
|
prelude = ""
|
|
|
if info and info.parent is not None and hasattr(info.parent, HOOK_NAME):
|
|
|
parents_docs_dict = getattr(info.parent, HOOK_NAME)
|
|
|
parents_docs = parents_docs_dict.get(att_name, None)
|
|
|
out: InfoDict = cast(
|
|
|
InfoDict,
|
|
|
{
|
|
|
**{field: None for field in _info_fields},
|
|
|
**{
|
|
|
"name": oname,
|
|
|
"found": True,
|
|
|
"isalias": isalias,
|
|
|
"ismagic": ismagic,
|
|
|
"subclasses": None,
|
|
|
},
|
|
|
},
|
|
|
)
|
|
|
|
|
|
if parents_docs:
|
|
|
ds = parents_docs
|
|
|
elif isalias:
|
|
|
if not callable(obj):
|
|
|
try:
|
|
|
ds = "Alias to the system command:\n %s" % obj[1]
|
|
|
except:
|
|
|
ds = "Alias: " + str(obj)
|
|
|
else:
|
|
|
ds = "Alias to " + str(obj)
|
|
|
if obj.__doc__:
|
|
|
ds += "\nDocstring:\n" + obj.__doc__
|
|
|
else:
|
|
|
ds_or_None = getdoc(obj)
|
|
|
if ds_or_None is None:
|
|
|
ds = '<no docstring>'
|
|
|
else:
|
|
|
ds = ds_or_None
|
|
|
|
|
|
ds = prelude + ds
|
|
|
|
|
|
# store output in a dict, we initialize it here and fill it as we go
|
|
|
|
|
|
string_max = 200 # max size of strings to show (snipped if longer)
|
|
|
shalf = int((string_max - 5) / 2)
|
|
|
|
|
|
if ismagic:
|
|
|
out['type_name'] = 'Magic function'
|
|
|
elif isalias:
|
|
|
out['type_name'] = 'System alias'
|
|
|
else:
|
|
|
out['type_name'] = type(obj).__name__
|
|
|
|
|
|
try:
|
|
|
bclass = obj.__class__
|
|
|
out['base_class'] = str(bclass)
|
|
|
except:
|
|
|
pass
|
|
|
|
|
|
# String form, but snip if too long in ? form (full in ??)
|
|
|
if detail_level >= self.str_detail_level:
|
|
|
try:
|
|
|
ostr = str(obj)
|
|
|
if not detail_level and len(ostr) > string_max:
|
|
|
ostr = ostr[:shalf] + ' <...> ' + ostr[-shalf:]
|
|
|
# TODO: `'string_form'.expandtabs()` seems wrong, but
|
|
|
# it was (nearly) like this since the first commit ever.
|
|
|
ostr = ("\n" + " " * len("string_form".expandtabs())).join(
|
|
|
q.strip() for q in ostr.split("\n")
|
|
|
)
|
|
|
out["string_form"] = ostr
|
|
|
except:
|
|
|
pass
|
|
|
|
|
|
if ospace:
|
|
|
out['namespace'] = ospace
|
|
|
|
|
|
# Length (for strings and lists)
|
|
|
try:
|
|
|
out['length'] = str(len(obj))
|
|
|
except Exception:
|
|
|
pass
|
|
|
|
|
|
# Filename where object was defined
|
|
|
binary_file = False
|
|
|
fname = find_file(obj)
|
|
|
if fname is None:
|
|
|
# if anything goes wrong, we don't want to show source, so it's as
|
|
|
# if the file was binary
|
|
|
binary_file = True
|
|
|
else:
|
|
|
if fname.endswith(('.so', '.dll', '.pyd')):
|
|
|
binary_file = True
|
|
|
elif fname.endswith('<string>'):
|
|
|
fname = 'Dynamically generated function. No source code available.'
|
|
|
out['file'] = compress_user(fname)
|
|
|
|
|
|
# Original source code for a callable, class or property.
|
|
|
if detail_level:
|
|
|
# Flush the source cache because inspect can return out-of-date
|
|
|
# source
|
|
|
linecache.checkcache()
|
|
|
try:
|
|
|
if isinstance(obj, property) or not binary_file:
|
|
|
src = getsource(obj, oname)
|
|
|
if src is not None:
|
|
|
src = src.rstrip()
|
|
|
out['source'] = src
|
|
|
|
|
|
except Exception:
|
|
|
pass
|
|
|
|
|
|
# Add docstring only if no source is to be shown (avoid repetitions).
|
|
|
if ds and not self._source_contains_docstring(out.get('source'), ds):
|
|
|
out['docstring'] = ds
|
|
|
|
|
|
# Constructor docstring for classes
|
|
|
if inspect.isclass(obj):
|
|
|
out['isclass'] = True
|
|
|
|
|
|
# get the init signature:
|
|
|
try:
|
|
|
init_def = self._getdef(obj, oname)
|
|
|
except AttributeError:
|
|
|
init_def = None
|
|
|
|
|
|
# get the __init__ docstring
|
|
|
try:
|
|
|
obj_init = obj.__init__
|
|
|
except AttributeError:
|
|
|
init_ds = None
|
|
|
else:
|
|
|
if init_def is None:
|
|
|
# Get signature from init if top-level sig failed.
|
|
|
# Can happen for built-in types (list, etc.).
|
|
|
try:
|
|
|
init_def = self._getdef(obj_init, oname)
|
|
|
except AttributeError:
|
|
|
pass
|
|
|
init_ds = getdoc(obj_init)
|
|
|
# Skip Python's auto-generated docstrings
|
|
|
if init_ds == _object_init_docstring:
|
|
|
init_ds = None
|
|
|
|
|
|
if init_def:
|
|
|
out['init_definition'] = init_def
|
|
|
|
|
|
if init_ds:
|
|
|
out['init_docstring'] = init_ds
|
|
|
|
|
|
names = [sub.__name__ for sub in type.__subclasses__(obj)]
|
|
|
if len(names) < 10:
|
|
|
all_names = ', '.join(names)
|
|
|
else:
|
|
|
all_names = ', '.join(names[:10]+['...'])
|
|
|
out['subclasses'] = all_names
|
|
|
# and class docstring for instances:
|
|
|
else:
|
|
|
# reconstruct the function definition and print it:
|
|
|
defln = self._getdef(obj, oname)
|
|
|
if defln:
|
|
|
out['definition'] = defln
|
|
|
|
|
|
# First, check whether the instance docstring is identical to the
|
|
|
# class one, and print it separately if they don't coincide. In
|
|
|
# most cases they will, but it's nice to print all the info for
|
|
|
# objects which use instance-customized docstrings.
|
|
|
if ds:
|
|
|
try:
|
|
|
cls = getattr(obj,'__class__')
|
|
|
except:
|
|
|
class_ds = None
|
|
|
else:
|
|
|
class_ds = getdoc(cls)
|
|
|
# Skip Python's auto-generated docstrings
|
|
|
if class_ds in _builtin_type_docstrings:
|
|
|
class_ds = None
|
|
|
if class_ds and ds != class_ds:
|
|
|
out['class_docstring'] = class_ds
|
|
|
|
|
|
# Next, try to show constructor docstrings
|
|
|
try:
|
|
|
init_ds = getdoc(obj.__init__)
|
|
|
# Skip Python's auto-generated docstrings
|
|
|
if init_ds == _object_init_docstring:
|
|
|
init_ds = None
|
|
|
except AttributeError:
|
|
|
init_ds = None
|
|
|
if init_ds:
|
|
|
out['init_docstring'] = init_ds
|
|
|
|
|
|
# Call form docstring for callable instances
|
|
|
if safe_hasattr(obj, '__call__') and not is_simple_callable(obj):
|
|
|
call_def = self._getdef(obj.__call__, oname)
|
|
|
if call_def and (call_def != out.get('definition')):
|
|
|
# it may never be the case that call def and definition differ,
|
|
|
# but don't include the same signature twice
|
|
|
out['call_def'] = call_def
|
|
|
call_ds = getdoc(obj.__call__)
|
|
|
# Skip Python's auto-generated docstrings
|
|
|
if call_ds == _func_call_docstring:
|
|
|
call_ds = None
|
|
|
if call_ds:
|
|
|
out['call_docstring'] = call_ds
|
|
|
|
|
|
return out
|
|
|
|
|
|
@staticmethod
|
|
|
def _source_contains_docstring(src, doc):
|
|
|
"""
|
|
|
Check whether the source *src* contains the docstring *doc*.
|
|
|
|
|
|
This is is helper function to skip displaying the docstring if the
|
|
|
source already contains it, avoiding repetition of information.
|
|
|
"""
|
|
|
try:
|
|
|
(def_node,) = ast.parse(dedent(src)).body
|
|
|
return ast.get_docstring(def_node) == doc # type: ignore[arg-type]
|
|
|
except Exception:
|
|
|
# The source can become invalid or even non-existent (because it
|
|
|
# is re-fetched from the source file) so the above code fail in
|
|
|
# arbitrary ways.
|
|
|
return False
|
|
|
|
|
|
def psearch(self,pattern,ns_table,ns_search=[],
|
|
|
ignore_case=False,show_all=False, *, list_types=False):
|
|
|
"""Search namespaces with wildcards for objects.
|
|
|
|
|
|
Arguments:
|
|
|
|
|
|
- pattern: string containing shell-like wildcards to use in namespace
|
|
|
searches and optionally a type specification to narrow the search to
|
|
|
objects of that type.
|
|
|
|
|
|
- ns_table: dict of name->namespaces for search.
|
|
|
|
|
|
Optional arguments:
|
|
|
|
|
|
- ns_search: list of namespace names to include in search.
|
|
|
|
|
|
- ignore_case(False): make the search case-insensitive.
|
|
|
|
|
|
- show_all(False): show all names, including those starting with
|
|
|
underscores.
|
|
|
|
|
|
- list_types(False): list all available object types for object matching.
|
|
|
"""
|
|
|
# print('ps pattern:<%r>' % pattern) # dbg
|
|
|
|
|
|
# defaults
|
|
|
type_pattern = 'all'
|
|
|
filter = ''
|
|
|
|
|
|
# list all object types
|
|
|
if list_types:
|
|
|
page.page('\n'.join(sorted(typestr2type)))
|
|
|
return
|
|
|
|
|
|
cmds = pattern.split()
|
|
|
len_cmds = len(cmds)
|
|
|
if len_cmds == 1:
|
|
|
# Only filter pattern given
|
|
|
filter = cmds[0]
|
|
|
elif len_cmds == 2:
|
|
|
# Both filter and type specified
|
|
|
filter,type_pattern = cmds
|
|
|
else:
|
|
|
raise ValueError('invalid argument string for psearch: <%s>' %
|
|
|
pattern)
|
|
|
|
|
|
# filter search namespaces
|
|
|
for name in ns_search:
|
|
|
if name not in ns_table:
|
|
|
raise ValueError('invalid namespace <%s>. Valid names: %s' %
|
|
|
(name,ns_table.keys()))
|
|
|
|
|
|
# print('type_pattern:',type_pattern) # dbg
|
|
|
search_result, namespaces_seen = set(), set()
|
|
|
for ns_name in ns_search:
|
|
|
ns = ns_table[ns_name]
|
|
|
# Normally, locals and globals are the same, so we just check one.
|
|
|
if id(ns) in namespaces_seen:
|
|
|
continue
|
|
|
namespaces_seen.add(id(ns))
|
|
|
tmp_res = list_namespace(ns, type_pattern, filter,
|
|
|
ignore_case=ignore_case, show_all=show_all)
|
|
|
search_result.update(tmp_res)
|
|
|
|
|
|
page.page('\n'.join(sorted(search_result)))
|
|
|
|
|
|
|
|
|
def _render_signature(obj_signature, obj_name) -> str:
|
|
|
"""
|
|
|
This was mostly taken from inspect.Signature.__str__.
|
|
|
Look there for the comments.
|
|
|
The only change is to add linebreaks when this gets too long.
|
|
|
"""
|
|
|
result = []
|
|
|
pos_only = False
|
|
|
kw_only = True
|
|
|
for param in obj_signature.parameters.values():
|
|
|
if param.kind == inspect.Parameter.POSITIONAL_ONLY:
|
|
|
pos_only = True
|
|
|
elif pos_only:
|
|
|
result.append('/')
|
|
|
pos_only = False
|
|
|
|
|
|
if param.kind == inspect.Parameter.VAR_POSITIONAL:
|
|
|
kw_only = False
|
|
|
elif param.kind == inspect.Parameter.KEYWORD_ONLY and kw_only:
|
|
|
result.append('*')
|
|
|
kw_only = False
|
|
|
|
|
|
result.append(str(param))
|
|
|
|
|
|
if pos_only:
|
|
|
result.append('/')
|
|
|
|
|
|
# add up name, parameters, braces (2), and commas
|
|
|
if len(obj_name) + sum(len(r) + 2 for r in result) > 75:
|
|
|
# This doesn’t fit behind “Signature: ” in an inspect window.
|
|
|
rendered = '{}(\n{})'.format(obj_name, ''.join(
|
|
|
' {},\n'.format(r) for r in result)
|
|
|
)
|
|
|
else:
|
|
|
rendered = '{}({})'.format(obj_name, ', '.join(result))
|
|
|
|
|
|
if obj_signature.return_annotation is not inspect._empty:
|
|
|
anno = inspect.formatannotation(obj_signature.return_annotation)
|
|
|
rendered += ' -> {}'.format(anno)
|
|
|
|
|
|
return rendered
|
|
|
|
