Merge pull request #1211 from minrk/localfiles

Files in notebook-dir are served by the nbserver as `files/<relativepath>`.

IPython/frontend/html/notebook/handlers.py

@@ -1,628 +1,637 b''
 """Tornado handlers for the notebook.
 
 Authors:
 
 * Brian Granger
 """
 
 #-----------------------------------------------------------------------------
 #  Copyright (C) 2008-2011  The IPython Development Team
 #
 #  Distributed under the terms of the BSD License.  The full license is in
 #  the file COPYING, distributed as part of this software.
 #-----------------------------------------------------------------------------
 
 #-----------------------------------------------------------------------------
 # Imports
 #-----------------------------------------------------------------------------
 
 import logging
 import Cookie
 import time
 import uuid
 
 from tornado import web
 from tornado import websocket
 
 from zmq.eventloop import ioloop
 from zmq.utils import jsonapi
 
 from IPython.external.decorator import decorator
 from IPython.zmq.session import Session
 from IPython.lib.security import passwd_check
 
 try:
     from docutils.core import publish_string
 except ImportError:
     publish_string = None
 
 #-----------------------------------------------------------------------------
 # Monkeypatch for Tornado <= 2.1.1 - Remove when no longer necessary!
 #-----------------------------------------------------------------------------
 
 # Google Chrome, as of release 16, changed its websocket protocol number.  The
 # parts tornado cares about haven't really changed, so it's OK to continue
 # accepting Chrome connections, but as of Tornado 2.1.1 (the currently released
 # version as of Oct 30/2011) the version check fails, see the issue report:
 
 # https://github.com/facebook/tornado/issues/385
 
 # This issue has been fixed in Tornado post 2.1.1:
 
 # https://github.com/facebook/tornado/commit/84d7b458f956727c3b0d6710
 
 # Here we manually apply the same patch as above so that users of IPython can
 # continue to work with an officially released Tornado.  We make the
 # monkeypatch version check as narrow as possible to limit its effects; once
 # Tornado 2.1.1 is no longer found in the wild we'll delete this code.
 
 import tornado
 
 if tornado.version_info <= (2,1,1):
 
     def _execute(self, transforms, *args, **kwargs):
         from tornado.websocket import WebSocketProtocol8, WebSocketProtocol76
         
         self.open_args = args
         self.open_kwargs = kwargs
 
         # The difference between version 8 and 13 is that in 8 the
         # client sends a "Sec-Websocket-Origin" header and in 13 it's
         # simply "Origin".
         if self.request.headers.get("Sec-WebSocket-Version") in ("7", "8", "13"):
             self.ws_connection = WebSocketProtocol8(self)
             self.ws_connection.accept_connection()
             
         elif self.request.headers.get("Sec-WebSocket-Version"):
             self.stream.write(tornado.escape.utf8(
                 "HTTP/1.1 426 Upgrade Required\r\n"
                 "Sec-WebSocket-Version: 8\r\n\r\n"))
             self.stream.close()
             
         else:
             self.ws_connection = WebSocketProtocol76(self)
             self.ws_connection.accept_connection()
 
     websocket.WebSocketHandler._execute = _execute
     del _execute
     
 #-----------------------------------------------------------------------------
 # Decorator for disabling read-only handlers
 #-----------------------------------------------------------------------------
 
 @decorator
 def not_if_readonly(f, self, *args, **kwargs):
     if self.application.read_only:
         raise web.HTTPError(403, "Notebook server is read-only")
     else:
         return f(self, *args, **kwargs)
 
 @decorator
 def authenticate_unless_readonly(f, self, *args, **kwargs):
     """authenticate this page *unless* readonly view is active.
     
     In read-only mode, the notebook list and print view should
     be accessible without authentication.
     """
     
     @web.authenticated
     def auth_f(self, *args, **kwargs):
         return f(self, *args, **kwargs)
+
     if self.application.read_only:
         return f(self, *args, **kwargs)
     else:
         return auth_f(self, *args, **kwargs)
 
 #-----------------------------------------------------------------------------
 # Top-level handlers
 #-----------------------------------------------------------------------------
 
 class RequestHandler(web.RequestHandler):
     """RequestHandler with default variable setting."""
 
     def render(*args, **kwargs):
         kwargs.setdefault('message', '')
         return web.RequestHandler.render(*args, **kwargs)
 
 class AuthenticatedHandler(RequestHandler):
     """A RequestHandler with an authenticated user."""
 
     def get_current_user(self):
         user_id = self.get_secure_cookie("username")
         # For now the user_id should not return empty, but it could eventually
         if user_id == '':
             user_id = 'anonymous'
         if user_id is None:
             # prevent extra Invalid cookie sig warnings:
             self.clear_cookie('username')
             if not self.application.password and not self.application.read_only:
                 user_id = 'anonymous'
         return user_id
 
     @property
     def logged_in(self):
         """Is a user currently logged in?
 
         """
         user = self.get_current_user()
         return (user and not user == 'anonymous')
 
     @property
     def login_available(self):
         """May a user proceed to log in?
 
         This returns True if login capability is available, irrespective of
         whether the user is already logged in or not.
 
         """
         return bool(self.application.password)
 
     @property
     def read_only(self):
         """Is the notebook read-only?
 
         """
         return self.application.read_only
 
     @property
     def ws_url(self):
         """websocket url matching the current request
         
         turns http[s]://host[:port] into
                 ws[s]://host[:port]
         """
         proto = self.request.protocol.replace('http', 'ws')
         return "%s://%s" % (proto, self.request.host)
 
 
+class AuthenticatedFileHandler(AuthenticatedHandler, web.StaticFileHandler):
+    """static files should only be accessible when logged in"""
+
+    @authenticate_unless_readonly
+    def get(self, path):
+        return web.StaticFileHandler.get(self, path)
+
+
 class ProjectDashboardHandler(AuthenticatedHandler):
 
     @authenticate_unless_readonly
     def get(self):
         nbm = self.application.notebook_manager
         project = nbm.notebook_dir
         self.render(
             'projectdashboard.html', project=project,
             base_project_url=u'/', base_kernel_url=u'/',
             read_only=self.read_only,
             logged_in=self.logged_in,
             login_available=self.login_available
         )
 
 
 class LoginHandler(AuthenticatedHandler):
 
     def _render(self, message=None):
         self.render('login.html',
                 next=self.get_argument('next', default='/'),
                 read_only=self.read_only,
                 logged_in=self.logged_in,
                 login_available=self.login_available,
                 message=message
         )
 
     def get(self):
         if self.current_user:
             self.redirect(self.get_argument('next', default='/'))
         else:
             self._render()
 
     def post(self):
         pwd = self.get_argument('password', default=u'')
         if self.application.password:
             if passwd_check(self.application.password, pwd):
                 self.set_secure_cookie('username', str(uuid.uuid4()))
             else:
                 self._render(message={'error': 'Invalid password'})
                 return
 
         self.redirect(self.get_argument('next', default='/'))
 
 
 class LogoutHandler(AuthenticatedHandler):
 
     def get(self):
         self.clear_cookie('username')
         if self.login_available:
             message = {'info': 'Successfully logged out.'}
         else:
             message = {'warning': 'Cannot log out.  Notebook authentication '
                        'is disabled.'}
 
         self.render('logout.html',
                     read_only=self.read_only,
                     logged_in=self.logged_in,
                     login_available=self.login_available,
                     message=message)
 
 
 class NewHandler(AuthenticatedHandler):
 
     @web.authenticated
     def get(self):
         nbm = self.application.notebook_manager
         project = nbm.notebook_dir
         notebook_id = nbm.new_notebook()
         self.render(
             'notebook.html', project=project,
             notebook_id=notebook_id,
             base_project_url=u'/', base_kernel_url=u'/',
             kill_kernel=False,
             read_only=False,
             logged_in=self.logged_in,
             login_available=self.login_available,
             mathjax_url=self.application.ipython_app.mathjax_url,
         )
 
 
 class NamedNotebookHandler(AuthenticatedHandler):
 
     @authenticate_unless_readonly
     def get(self, notebook_id):
         nbm = self.application.notebook_manager
         project = nbm.notebook_dir
         if not nbm.notebook_exists(notebook_id):
             raise web.HTTPError(404, u'Notebook does not exist: %s' % notebook_id)
         
         self.render(
             'notebook.html', project=project,
             notebook_id=notebook_id,
             base_project_url=u'/', base_kernel_url=u'/',
             kill_kernel=False,
             read_only=self.read_only,
             logged_in=self.logged_in,
             login_available=self.login_available,
             mathjax_url=self.application.ipython_app.mathjax_url,
         )
 
 
 #-----------------------------------------------------------------------------
 # Kernel handlers
 #-----------------------------------------------------------------------------
 
 
 class MainKernelHandler(AuthenticatedHandler):
 
     @web.authenticated
     def get(self):
         km = self.application.kernel_manager
         self.finish(jsonapi.dumps(km.kernel_ids))
 
     @web.authenticated
     def post(self):
         km = self.application.kernel_manager
         notebook_id = self.get_argument('notebook', default=None)
         kernel_id = km.start_kernel(notebook_id)
         data = {'ws_url':self.ws_url,'kernel_id':kernel_id}
         self.set_header('Location', '/'+kernel_id)
         self.finish(jsonapi.dumps(data))
 
 
 class KernelHandler(AuthenticatedHandler):
 
     SUPPORTED_METHODS = ('DELETE')
 
     @web.authenticated
     def delete(self, kernel_id):
         km = self.application.kernel_manager
         km.kill_kernel(kernel_id)
         self.set_status(204)
         self.finish()
 
 
 class KernelActionHandler(AuthenticatedHandler):
 
     @web.authenticated
     def post(self, kernel_id, action):
         km = self.application.kernel_manager
         if action == 'interrupt':
             km.interrupt_kernel(kernel_id)
             self.set_status(204)
         if action == 'restart':
             new_kernel_id = km.restart_kernel(kernel_id)
             data = {'ws_url':self.ws_url,'kernel_id':new_kernel_id}
             self.set_header('Location', '/'+new_kernel_id)
             self.write(jsonapi.dumps(data))
         self.finish()
 
 
 class ZMQStreamHandler(websocket.WebSocketHandler):
 
     def _reserialize_reply(self, msg_list):
         """Reserialize a reply message using JSON.
 
         This takes the msg list from the ZMQ socket, unserializes it using
         self.session and then serializes the result using JSON. This method
         should be used by self._on_zmq_reply to build messages that can
         be sent back to the browser.
         """
         idents, msg_list = self.session.feed_identities(msg_list)
         msg = self.session.unserialize(msg_list)
         try:
             msg['header'].pop('date')
         except KeyError:
             pass
         try:
             msg['parent_header'].pop('date')
         except KeyError:
             pass
         msg.pop('buffers')
         return jsonapi.dumps(msg)
 
     def _on_zmq_reply(self, msg_list):
         try:
             msg = self._reserialize_reply(msg_list)
         except:
             self.application.log.critical("Malformed message: %r" % msg_list)
         else:
             self.write_message(msg)
 
 
 class AuthenticatedZMQStreamHandler(ZMQStreamHandler):
 
     def open(self, kernel_id):
         self.kernel_id = kernel_id.decode('ascii')
         try:
             cfg = self.application.ipython_app.config
         except AttributeError:
             # protect from the case where this is run from something other than
             # the notebook app:
             cfg = None
         self.session = Session(config=cfg)
         self.save_on_message = self.on_message
         self.on_message = self.on_first_message
 
     def get_current_user(self):
         user_id = self.get_secure_cookie("username")
         if user_id == '' or (user_id is None and not self.application.password):
             user_id = 'anonymous'
         return user_id
 
     def _inject_cookie_message(self, msg):
         """Inject the first message, which is the document cookie,
         for authentication."""
         if isinstance(msg, unicode):
             # Cookie can't constructor doesn't accept unicode strings for some reason
             msg = msg.encode('utf8', 'replace')
         try:
             self.request._cookies = Cookie.SimpleCookie(msg)
         except:
             logging.warn("couldn't parse cookie string: %s",msg, exc_info=True)
 
     def on_first_message(self, msg):
         self._inject_cookie_message(msg)
         if self.get_current_user() is None:
             logging.warn("Couldn't authenticate WebSocket connection")
             raise web.HTTPError(403)
         self.on_message = self.save_on_message
 
 
 class IOPubHandler(AuthenticatedZMQStreamHandler):
 
     def initialize(self, *args, **kwargs):
         self._kernel_alive = True
         self._beating = False
         self.iopub_stream = None
         self.hb_stream = None
 
     def on_first_message(self, msg):
         try:
             super(IOPubHandler, self).on_first_message(msg)
         except web.HTTPError:
             self.close()
             return
         km = self.application.kernel_manager
         self.time_to_dead = km.time_to_dead
         self.first_beat = km.first_beat
         kernel_id = self.kernel_id
         try:
             self.iopub_stream = km.create_iopub_stream(kernel_id)
             self.hb_stream = km.create_hb_stream(kernel_id)
         except web.HTTPError:
             # WebSockets don't response to traditional error codes so we
             # close the connection.
             if not self.stream.closed():
                 self.stream.close()
             self.close()
         else:
             self.iopub_stream.on_recv(self._on_zmq_reply)
             self.start_hb(self.kernel_died)
 
     def on_message(self, msg):
         pass
 
     def on_close(self):
         # This method can be called twice, once by self.kernel_died and once
         # from the WebSocket close event. If the WebSocket connection is
         # closed before the ZMQ streams are setup, they could be None.
         self.stop_hb()
         if self.iopub_stream is not None and not self.iopub_stream.closed():
             self.iopub_stream.on_recv(None)
             self.iopub_stream.close()
         if self.hb_stream is not None and not self.hb_stream.closed():
             self.hb_stream.close()
 
     def start_hb(self, callback):
         """Start the heartbeating and call the callback if the kernel dies."""
         if not self._beating:
             self._kernel_alive = True
 
             def ping_or_dead():
                 self.hb_stream.flush()
                 if self._kernel_alive:
                     self._kernel_alive = False
                     self.hb_stream.send(b'ping')
                 else:
                     try:
                         callback()
                     except:
                         pass
                     finally:
                         self.stop_hb()
 
             def beat_received(msg):
                 self._kernel_alive = True
 
             self.hb_stream.on_recv(beat_received)
             loop = ioloop.IOLoop.instance()
             self._hb_periodic_callback = ioloop.PeriodicCallback(ping_or_dead, self.time_to_dead*1000, loop)
             loop.add_timeout(time.time()+self.first_beat, self._really_start_hb)
             self._beating= True
     
     def _really_start_hb(self):
         """callback for delayed heartbeat start
         
         Only start the hb loop if we haven't been closed during the wait.
         """
         if self._beating and not self.hb_stream.closed():
             self._hb_periodic_callback.start()
 
     def stop_hb(self):
         """Stop the heartbeating and cancel all related callbacks."""
         if self._beating:
             self._beating = False
             self._hb_periodic_callback.stop()
             if not self.hb_stream.closed():
                 self.hb_stream.on_recv(None)
 
     def kernel_died(self):
         self.application.kernel_manager.delete_mapping_for_kernel(self.kernel_id)
         self.application.log.error("Kernel %s failed to respond to heartbeat", self.kernel_id)
         self.write_message(
             {'header': {'msg_type': 'status'},
              'parent_header': {},
              'content': {'execution_state':'dead'}
             }
         )
         self.on_close()
 
 
 class ShellHandler(AuthenticatedZMQStreamHandler):
 
     def initialize(self, *args, **kwargs):
         self.shell_stream = None
 
     def on_first_message(self, msg):
         try:
             super(ShellHandler, self).on_first_message(msg)
         except web.HTTPError:
             self.close()
             return
         km = self.application.kernel_manager
         self.max_msg_size = km.max_msg_size
         kernel_id = self.kernel_id
         try:
             self.shell_stream = km.create_shell_stream(kernel_id)
         except web.HTTPError:
             # WebSockets don't response to traditional error codes so we
             # close the connection.
             if not self.stream.closed():
                 self.stream.close()
             self.close()
         else:
             self.shell_stream.on_recv(self._on_zmq_reply)
 
     def on_message(self, msg):
         if len(msg) < self.max_msg_size:
             msg = jsonapi.loads(msg)
             self.session.send(self.shell_stream, msg)
 
     def on_close(self):
         # Make sure the stream exists and is not already closed.
         if self.shell_stream is not None and not self.shell_stream.closed():
             self.shell_stream.close()
 
 
 #-----------------------------------------------------------------------------
 # Notebook web service handlers
 #-----------------------------------------------------------------------------
 
 class NotebookRootHandler(AuthenticatedHandler):
 
     @authenticate_unless_readonly
     def get(self):
         
         nbm = self.application.notebook_manager
         files = nbm.list_notebooks()
         self.finish(jsonapi.dumps(files))
 
     @web.authenticated
     def post(self):
         nbm = self.application.notebook_manager
         body = self.request.body.strip()
         format = self.get_argument('format', default='json')
         name = self.get_argument('name', default=None)
         if body:
             notebook_id = nbm.save_new_notebook(body, name=name, format=format)
         else:
             notebook_id = nbm.new_notebook()
         self.set_header('Location', '/'+notebook_id)
         self.finish(jsonapi.dumps(notebook_id))
 
 
 class NotebookHandler(AuthenticatedHandler):
 
     SUPPORTED_METHODS = ('GET', 'PUT', 'DELETE')
 
     @authenticate_unless_readonly
     def get(self, notebook_id):
         nbm = self.application.notebook_manager
         format = self.get_argument('format', default='json')
         last_mod, name, data = nbm.get_notebook(notebook_id, format)
         
         if format == u'json':
             self.set_header('Content-Type', 'application/json')
             self.set_header('Content-Disposition','attachment; filename="%s.ipynb"' % name)
         elif format == u'py':
             self.set_header('Content-Type', 'application/x-python')
             self.set_header('Content-Disposition','attachment; filename="%s.py"' % name)
         self.set_header('Last-Modified', last_mod)
         self.finish(data)
 
     @web.authenticated
     def put(self, notebook_id):
         nbm = self.application.notebook_manager
         format = self.get_argument('format', default='json')
         name = self.get_argument('name', default=None)
         nbm.save_notebook(notebook_id, self.request.body, name=name, format=format)
         self.set_status(204)
         self.finish()
 
     @web.authenticated
     def delete(self, notebook_id):
         nbm = self.application.notebook_manager
         nbm.delete_notebook(notebook_id)
         self.set_status(204)
         self.finish()
 
 #-----------------------------------------------------------------------------
 # RST web service handlers
 #-----------------------------------------------------------------------------
 
 
 class RSTHandler(AuthenticatedHandler):
 
     @web.authenticated
     def post(self):
         if publish_string is None:
             raise web.HTTPError(503, u'docutils not available')
         body = self.request.body.strip()
         source = body
         # template_path=os.path.join(os.path.dirname(__file__), u'templates', u'rst_template.html')
         defaults = {'file_insertion_enabled': 0,
                     'raw_enabled': 0,
                     '_disable_config': 1,
                     'stylesheet_path': 0
                     # 'template': template_path
         }
         try:
             html = publish_string(source, writer_name='html',
                                   settings_overrides=defaults
             )
         except:
             raise web.HTTPError(400, u'Invalid RST')
         print html
         self.set_header('Content-Type', 'text/html')
         self.finish(html)
 
 

IPython/frontend/html/notebook/notebookapp.py

@@ -1,403 +1,405 b''
 """A tornado based IPython notebook server.
 
 Authors:
 
 * Brian Granger
 """
 
 #-----------------------------------------------------------------------------
 #  Copyright (C) 2008-2011  The IPython Development Team
 #
 #  Distributed under the terms of the BSD License.  The full license is in
 #  the file COPYING, distributed as part of this software.
 #-----------------------------------------------------------------------------
 
 #-----------------------------------------------------------------------------
 # Imports
 #-----------------------------------------------------------------------------
 
 # stdlib
 import errno
 import logging
 import os
 import signal
 import socket
 import sys
 import threading
 import webbrowser
 
 # Third party
 import zmq
 
 # Install the pyzmq ioloop. This has to be done before anything else from
 # tornado is imported.
 from zmq.eventloop import ioloop
 # FIXME: ioloop.install is new in pyzmq-2.1.7, so remove this conditional
 # when pyzmq dependency is updated beyond that.
 if hasattr(ioloop, 'install'):
     ioloop.install()
 else:
     import tornado.ioloop
     tornado.ioloop.IOLoop = ioloop.IOLoop
 
 from tornado import httpserver
 from tornado import web
 
 # Our own libraries
 from .kernelmanager import MappingKernelManager
 from .handlers import (LoginHandler, LogoutHandler,
     ProjectDashboardHandler, NewHandler, NamedNotebookHandler,
     MainKernelHandler, KernelHandler, KernelActionHandler, IOPubHandler,
-    ShellHandler, NotebookRootHandler, NotebookHandler, RSTHandler
+    ShellHandler, NotebookRootHandler, NotebookHandler, RSTHandler,
+    AuthenticatedFileHandler,
 )
 from .notebookmanager import NotebookManager
 
 from IPython.config.application import catch_config_error, boolean_flag
 from IPython.core.application import BaseIPythonApplication
 from IPython.core.profiledir import ProfileDir
 from IPython.lib.kernel import swallow_argv
 from IPython.zmq.session import Session, default_secure
 from IPython.zmq.zmqshell import ZMQInteractiveShell
 from IPython.zmq.ipkernel import (
     flags as ipkernel_flags,
     aliases as ipkernel_aliases,
     IPKernelApp
 )
 from IPython.utils.traitlets import Dict, Unicode, Integer, List, Enum, Bool
 
 #-----------------------------------------------------------------------------
 # Module globals
 #-----------------------------------------------------------------------------
 
 _kernel_id_regex = r"(?P<kernel_id>\w+-\w+-\w+-\w+-\w+)"
 _kernel_action_regex = r"(?P<action>restart|interrupt)"
 _notebook_id_regex = r"(?P<notebook_id>\w+-\w+-\w+-\w+-\w+)"
 
 LOCALHOST = '127.0.0.1'
 
 _examples = """
 ipython notebook                       # start the notebook
 ipython notebook --profile=sympy       # use the sympy profile
 ipython notebook --pylab=inline        # pylab in inline plotting mode
 ipython notebook --certfile=mycert.pem # use SSL/TLS certificate
 ipython notebook --port=5555 --ip=*    # Listen on port 5555, all interfaces
 """
 
 #-----------------------------------------------------------------------------
 # The Tornado web application
 #-----------------------------------------------------------------------------
 
 class NotebookWebApplication(web.Application):
 
     def __init__(self, ipython_app, kernel_manager, notebook_manager, log, settings_overrides):
         handlers = [
             (r"/", ProjectDashboardHandler),
             (r"/login", LoginHandler),
             (r"/logout", LogoutHandler),
             (r"/new", NewHandler),
             (r"/%s" % _notebook_id_regex, NamedNotebookHandler),
             (r"/kernels", MainKernelHandler),
             (r"/kernels/%s" % _kernel_id_regex, KernelHandler),
             (r"/kernels/%s/%s" % (_kernel_id_regex, _kernel_action_regex), KernelActionHandler),
             (r"/kernels/%s/iopub" % _kernel_id_regex, IOPubHandler),
             (r"/kernels/%s/shell" % _kernel_id_regex, ShellHandler),
             (r"/notebooks", NotebookRootHandler),
             (r"/notebooks/%s" % _notebook_id_regex, NotebookHandler),
-            (r"/rstservice/render", RSTHandler)
+            (r"/rstservice/render", RSTHandler),
+            (r"/files/(.*)", AuthenticatedFileHandler, {'path' : notebook_manager.notebook_dir}),
         ]
         settings = dict(
             template_path=os.path.join(os.path.dirname(__file__), "templates"),
             static_path=os.path.join(os.path.dirname(__file__), "static"),
             cookie_secret=os.urandom(1024),
             login_url="/login",
         )
 
         # allow custom overrides for the tornado web app.
         settings.update(settings_overrides)
 
         super(NotebookWebApplication, self).__init__(handlers, **settings)
 
         self.kernel_manager = kernel_manager
         self.log = log
         self.notebook_manager = notebook_manager
         self.ipython_app = ipython_app
         self.read_only = self.ipython_app.read_only
 
 
 #-----------------------------------------------------------------------------
 # Aliases and Flags
 #-----------------------------------------------------------------------------
 
 flags = dict(ipkernel_flags)
 flags['no-browser']=(
     {'NotebookApp' : {'open_browser' : False}},
     "Don't open the notebook in a browser after startup."
 )
 flags['no-mathjax']=(
     {'NotebookApp' : {'enable_mathjax' : False}},
     """Disable MathJax
     
     MathJax is the javascript library IPython uses to render math/LaTeX. It is
     very large, so you may want to disable it if you have a slow internet
     connection, or for offline use of the notebook.
     
     When disabled, equations etc. will appear as their untransformed TeX source.
     """
 )
 flags['read-only'] = (
     {'NotebookApp' : {'read_only' : True}},
     """Allow read-only access to notebooks.
     
     When using a password to protect the notebook server, this flag
     allows unauthenticated clients to view the notebook list, and
     individual notebooks, but not edit them, start kernels, or run
     code.
     
     If no password is set, the server will be entirely read-only.
     """
 )
 
 # Add notebook manager flags
 flags.update(boolean_flag('script', 'NotebookManager.save_script',
                'Auto-save a .py script everytime the .ipynb notebook is saved',
                'Do not auto-save .py scripts for every notebook'))
 
 # the flags that are specific to the frontend
 # these must be scrubbed before being passed to the kernel,
 # or it will raise an error on unrecognized flags
 notebook_flags = ['no-browser', 'no-mathjax', 'read-only', 'script', 'no-script']
 
 aliases = dict(ipkernel_aliases)
 
 aliases.update({
     'ip': 'NotebookApp.ip',
     'port': 'NotebookApp.port',
     'keyfile': 'NotebookApp.keyfile',
     'certfile': 'NotebookApp.certfile',
     'notebook-dir': 'NotebookManager.notebook_dir',
 })
 
 # remove ipkernel flags that are singletons, and don't make sense in
 # multi-kernel evironment:
 aliases.pop('f', None)
 
 notebook_aliases = [u'port', u'ip', u'keyfile', u'certfile',
                     u'notebook-dir']
 
 #-----------------------------------------------------------------------------
 # NotebookApp
 #-----------------------------------------------------------------------------
 
 class NotebookApp(BaseIPythonApplication):
 
     name = 'ipython-notebook'
     default_config_file_name='ipython_notebook_config.py'
     
     description = """
         The IPython HTML Notebook.
         
         This launches a Tornado based HTML Notebook Server that serves up an
         HTML5/Javascript Notebook client.
     """
     examples = _examples
     
     classes = [IPKernelApp, ZMQInteractiveShell, ProfileDir, Session,
                MappingKernelManager, NotebookManager]
     flags = Dict(flags)
     aliases = Dict(aliases)
 
     kernel_argv = List(Unicode)
 
     log_level = Enum((0,10,20,30,40,50,'DEBUG','INFO','WARN','ERROR','CRITICAL'),
                     default_value=logging.INFO,
                     config=True,
                     help="Set the log level by value or name.")
 
     # Network related information.
 
     ip = Unicode(LOCALHOST, config=True,
         help="The IP address the notebook server will listen on."
     )
 
     def _ip_changed(self, name, old, new):
         if new == u'*': self.ip = u''
 
     port = Integer(8888, config=True,
         help="The port the notebook server will listen on."
     )
 
     certfile = Unicode(u'', config=True, 
         help="""The full path to an SSL/TLS certificate file."""
     )
     
     keyfile = Unicode(u'', config=True, 
         help="""The full path to a private key file for usage with SSL/TLS."""
     )
 
     password = Unicode(u'', config=True,
                       help="""Hashed password to use for web authentication.
 
                       To generate, type in a python/IPython shell:
 
                         from IPython.lib import passwd; passwd()
 
                       The string should be of the form type:salt:hashed-password.
                       """
     )
     
     open_browser = Bool(True, config=True,
                         help="Whether to open in a browser after starting.")
     
     read_only = Bool(False, config=True,
         help="Whether to prevent editing/execution of notebooks."
     )
     
     webapp_settings = Dict(config=True,
             help="Supply overrides for the tornado.web.Application that the "
                  "IPython notebook uses.")
     
     enable_mathjax = Bool(True, config=True,
         help="""Whether to enable MathJax for typesetting math/TeX
 
         MathJax is the javascript library IPython uses to render math/LaTeX. It is
         very large, so you may want to disable it if you have a slow internet
         connection, or for offline use of the notebook.
 
         When disabled, equations etc. will appear as their untransformed TeX source.
         """
     )
     def _enable_mathjax_changed(self, name, old, new):
         """set mathjax url to empty if mathjax is disabled"""
         if not new:
             self.mathjax_url = u''
     
     mathjax_url = Unicode("", config=True,
         help="""The url for MathJax.js."""
     )
     def _mathjax_url_default(self):
         if not self.enable_mathjax:
             return u''
         static_path = self.webapp_settings.get("static_path", os.path.join(os.path.dirname(__file__), "static"))
         if os.path.exists(os.path.join(static_path, 'mathjax', "MathJax.js")):
             self.log.info("Using local MathJax")
-            return u"static/mathjax/MathJax.js"
+            return u"/static/mathjax/MathJax.js"
         else:
             self.log.info("Using MathJax from CDN")
             return u"http://cdn.mathjax.org/mathjax/latest/MathJax.js"
     
     def _mathjax_url_changed(self, name, old, new):
         if new and not self.enable_mathjax:
             # enable_mathjax=False overrides mathjax_url
             self.mathjax_url = u''
         else:
             self.log.info("Using MathJax: %s", new)
 
     def parse_command_line(self, argv=None):
         super(NotebookApp, self).parse_command_line(argv)
         if argv is None:
             argv = sys.argv[1:]
 
         # Scrub frontend-specific flags
         self.kernel_argv = swallow_argv(argv, notebook_aliases, notebook_flags)
         # Kernel should inherit default config file from frontend
         self.kernel_argv.append("--KernelApp.parent_appname='%s'"%self.name)
 
     def init_configurables(self):
         # force Session default to be secure
         default_secure(self.config)
         # Create a KernelManager and start a kernel.
         self.kernel_manager = MappingKernelManager(
             config=self.config, log=self.log, kernel_argv=self.kernel_argv,
             connection_dir = self.profile_dir.security_dir,
         )
         self.notebook_manager = NotebookManager(config=self.config, log=self.log)
         self.notebook_manager.list_notebooks()
 
     def init_logging(self):
         super(NotebookApp, self).init_logging()
         # This prevents double log messages because tornado use a root logger that
         # self.log is a child of. The logging module dipatches log messages to a log
         # and all of its ancenstors until propagate is set to False.
         self.log.propagate = False
     
     def init_webapp(self):
         """initialize tornado webapp and httpserver"""
         self.web_app = NotebookWebApplication(
             self, self.kernel_manager, self.notebook_manager, self.log,
             self.webapp_settings
         )
         if self.certfile:
             ssl_options = dict(certfile=self.certfile)
             if self.keyfile:
                 ssl_options['keyfile'] = self.keyfile
         else:
             ssl_options = None
         self.web_app.password = self.password
         self.http_server = httpserver.HTTPServer(self.web_app, ssl_options=ssl_options)
         if ssl_options is None and not self.ip and not (self.read_only and not self.password):
             self.log.critical('WARNING: the notebook server is listening on all IP addresses '
                               'but not using any encryption or authentication. This is highly '
                               'insecure and not recommended.')
 
         # Try random ports centered around the default.
         from random import randint
         n = 50  # Max number of attempts, keep reasonably large.
         for port in range(self.port, self.port+5) + [self.port + randint(-2*n, 2*n) for i in range(n-5)]:
             try:
                 self.http_server.listen(port, self.ip)
             except socket.error, e:
                 if e.errno != errno.EADDRINUSE:
                     raise
                 self.log.info('The port %i is already in use, trying another random port.' % port)
             else:
                 self.port = port
                 break
     
     @catch_config_error
     def initialize(self, argv=None):
         super(NotebookApp, self).initialize(argv)
         self.init_configurables()
         self.init_webapp()
 
     def cleanup_kernels(self):
         """shutdown all kernels
         
         The kernels will shutdown themselves when this process no longer exists,
         but explicit shutdown allows the KernelManagers to cleanup the connection files.
         """
         self.log.info('Shutting down kernels')
         km = self.kernel_manager
         # copy list, since kill_kernel deletes keys
         for kid in list(km.kernel_ids):
             km.kill_kernel(kid)
 
     def start(self):
         ip = self.ip if self.ip else '[all ip addresses on your system]'
         proto = 'https' if self.certfile else 'http'
         info = self.log.info
         info("The IPython Notebook is running at: %s://%s:%i" % 
              (proto, ip, self.port) )
         info("Use Control-C to stop this server and shut down all kernels.")
 
         if self.open_browser:
             ip = self.ip or '127.0.0.1'
             b = lambda : webbrowser.open("%s://%s:%i" % (proto, ip, self.port),
                                          new=2)
             threading.Thread(target=b).start()
         try:
             ioloop.IOLoop.instance().start()
         except KeyboardInterrupt:
             info("Interrupted...")
         finally:
             self.cleanup_kernels()
     
 
 #-----------------------------------------------------------------------------
 # Main entry point
 #-----------------------------------------------------------------------------
 
 def launch_new_instance():
     app = NotebookApp.instance()
     app.initialize()
     app.start()
 

IPython/frontend/html/notebook/templates/layout.html

@@ -1,85 +1,85 b''
 <!DOCTYPE HTML>
 <html>
 
 <head>
     <meta charset="utf-8">
 
     <title>{% block title %}IPython Notebook{% end %}</title>
 
-    <link rel="stylesheet" href="static/jquery/css/themes/aristo/jquery-wijmo.css" type="text/css" />
-    <link rel="stylesheet" href="static/css/boilerplate.css" type="text/css" />
-    <link rel="stylesheet" href="static/css/layout.css" type="text/css" />
-    <link rel="stylesheet" href="static/css/base.css" type="text/css"/>
+    <link rel="stylesheet" href="/static/jquery/css/themes/aristo/jquery-wijmo.css" type="text/css" />
+    <link rel="stylesheet" href="/static/css/boilerplate.css" type="text/css" />
+    <link rel="stylesheet" href="/static/css/layout.css" type="text/css" />
+    <link rel="stylesheet" href="/static/css/base.css" type="text/css"/>
     {% block stylesheet %}
     {% end %}
 
     {% block meta %}
     {% end %}
 
 </head>
 
 <body {% block params %}{% end %}>
 
 <div id="header">
-    <span id="ipython_notebook"><h1><img src='static/ipynblogo.png' alt='IPython Notebook'/></h1></span>
+    <span id="ipython_notebook"><h1><img src='/static/ipynblogo.png' alt='IPython Notebook'/></h1></span>
 
     {% block login_widget %}
 
       <span id="login_widget">
         {% if logged_in %}
           <button id="logout">Logout</button>
         {% elif login_available and not logged_in %}
           <button id="login">Login</button>
         {% end %}
       </span>
 
     {% end %}
 
     {% block header %}
     {% end %}
 </div>
 
 <div id="header_border"></div>
 
 <div id="main_app">
 
     <div id="app_hbox">
 
     <div id="left_panel">
     {% block left_panel %}
     {% end %}
     </div>
 
     <div id="content_panel">
         {% if message %}
 
           {% for key in message %}
             <div class="message {{key}}">
                {{message[key]}}
             </div>
           {% end %}
         {% end %}
 
         {% block content_panel %}
         {% end %}
     </div>
     <div id="right_panel">
     {% block right_panel %}
     {% end %}
     </div>
 
     </div>
 
 </div>
 
-<script src="static/jquery/js/jquery-1.6.2.min.js" type="text/javascript" charset="utf-8"></script>
-<script src="static/jquery/js/jquery-ui-1.8.14.custom.min.js" type="text/javascript" charset="utf-8"></script>
-<script src="static/js/namespace.js" type="text/javascript" charset="utf-8"></script>
-<script src="static/js/loginmain.js" type="text/javascript" charset="utf-8"></script>
-<script src="static/js/loginwidget.js" type="text/javascript" charset="utf-8"></script>
+<script src="/static/jquery/js/jquery-1.6.2.min.js" type="text/javascript" charset="utf-8"></script>
+<script src="/static/jquery/js/jquery-ui-1.8.14.custom.min.js" type="text/javascript" charset="utf-8"></script>
+<script src="/static/js/namespace.js" type="text/javascript" charset="utf-8"></script>
+<script src="/static/js/loginmain.js" type="text/javascript" charset="utf-8"></script>
+<script src="/static/js/loginwidget.js" type="text/javascript" charset="utf-8"></script>
 {% block script %}
 {% end %}
 
 </body>
 
 </html>

IPython/frontend/html/notebook/templates/notebook.html

@@ -1,298 +1,298 b''
 <!DOCTYPE HTML>
 <html>
 
 <head>
     <meta charset="utf-8">
 
     <title>IPython Notebook</title>
 
     {% if mathjax_url %}
     <script type="text/javascript" src="{{mathjax_url}}?config=TeX-AMS_HTML" charset="utf-8"></script>
     {% end %}
     <script type="text/javascript">
     // MathJax disabled, set as null to distingish from *missing* MathJax,
     // where it will be undefined, and should prompt a dialog later.
     window.mathjax_url = "{{mathjax_url}}";
     </script>
 
-    <link rel="stylesheet" href="static/jquery/css/themes/aristo/jquery-wijmo.css" type="text/css" />
-    <link rel="stylesheet" href="static/codemirror/lib/codemirror.css">
-    <link rel="stylesheet" href="static/codemirror/mode/markdown/markdown.css">
-    <link rel="stylesheet" href="static/codemirror/mode/rst/rst.css">
-    <link rel="stylesheet" href="static/codemirror/theme/ipython.css">
-    <link rel="stylesheet" href="static/codemirror/theme/default.css">
+    <link rel="stylesheet" href="/static/jquery/css/themes/aristo/jquery-wijmo.css" type="text/css" />
+    <link rel="stylesheet" href="/static/codemirror/lib/codemirror.css">
+    <link rel="stylesheet" href="/static/codemirror/mode/markdown/markdown.css">
+    <link rel="stylesheet" href="/static/codemirror/mode/rst/rst.css">
+    <link rel="stylesheet" href="/static/codemirror/theme/ipython.css">
+    <link rel="stylesheet" href="/static/codemirror/theme/default.css">
 
-    <link rel="stylesheet" href="static/prettify/prettify.css"/>
+    <link rel="stylesheet" href="/static/prettify/prettify.css"/>
 
-    <link rel="stylesheet" href="static/css/boilerplate.css" type="text/css" />
-    <link rel="stylesheet" href="static/css/layout.css" type="text/css" />
-    <link rel="stylesheet" href="static/css/base.css" type="text/css" />
-    <link rel="stylesheet" href="static/css/notebook.css" type="text/css" />
-    <link rel="stylesheet" href="static/css/renderedhtml.css" type="text/css" />
+    <link rel="stylesheet" href="/static/css/boilerplate.css" type="text/css" />
+    <link rel="stylesheet" href="/static/css/layout.css" type="text/css" />
+    <link rel="stylesheet" href="/static/css/base.css" type="text/css" />
+    <link rel="stylesheet" href="/static/css/notebook.css" type="text/css" />
+    <link rel="stylesheet" href="/static/css/renderedhtml.css" type="text/css" />
 
     {% comment  In the notebook, the read-only flag is used to determine %}
     {% comment  whether to hide the side panels and switch off input %}
     <meta name="read_only" content="{{read_only and not logged_in}}"/>
 
 </head>
 
 <body
     data-project={{project}} data-notebook-id={{notebook_id}}
     data-base-project-url={{base_project_url}} data-base-kernel-url={{base_kernel_url}}
 >
 
 <div id="header">
-    <span id="ipython_notebook"><h1><a href='..' alt='dashboard'><img src='static/ipynblogo.png' alt='IPython Notebook'/></a></h1></span>
+    <span id="ipython_notebook"><h1><a href='..' alt='dashboard'><img src='/static/ipynblogo.png' alt='IPython Notebook'/></a></h1></span>
     <span id="save_widget">
         <input type="text" id="notebook_name" size="20"></textarea>
         <button id="save_notebook"><u>S</u>ave</button>
     </span>
     <span id="quick_help_area">
       <button id="quick_help">Quick<u>H</u>elp</button>
     </span>
 
     <span id="login_widget">
       {% comment  This is a temporary workaround to hide the logout button %}
       {% comment  when appropriate until notebook.html is templated %}
       {% if logged_in %}
         <button id="logout">Logout</button>
       {% elif not logged_in and login_available %}
         <button id="login">Login</button>
       {% end %}
     </span>
 
     <span id="kernel_status">Idle</span>
 </div>
 
 <div id="main_app">
 
     <div id="left_panel">
 
         <div id="notebook_section">
             <div class="section_header">
                 <h3>Notebook</h3>
             </div>
             <div class="section_content">
                 <div class="section_row">
                     <span id="new_open" class="section_row_buttons">
                         <button id="new_notebook">New</button>
                         <button id="open_notebook">Open</button>
                     </span>
                     <span class="section_row_header">Actions</span>
                 </div>
                 <div class="section_row">
                     <span>
                         <select id="download_format">
                             <option value="json">ipynb</option>
                             <option value="py">py</option>
                         </select>
                     </span>
                     <span class="section_row_buttons">
                         <button id="download_notebook">Download</button>
                     </span>
                 </div>
                 <div class="section_row">
                     <span class="section_row_buttons">
                         <span id="print_widget">
                             <button id="print_notebook">Print</button>
                         </span>
                     </span>
                 </div>
             </div>
         </div>
 
         <div id="cell_section">
             <div class="section_header">
                 <h3>Cell</h3>
             </div>
             <div class="section_content">
                 <div class="section_row">
                     <span class="section_row_buttons">
                         <button id="delete_cell"><u>D</u>elete</button>
                     </span>
                     <span class="section_row_header">Actions</span>
                 </div>
                 <div class="section_row">
                     <span id="cell_type" class="section_row_buttons">
                         <button id="to_code"><u>C</u>ode</button>
 <!--                        <button id="to_html">HTML</button>-->
                         <button id="to_markdown"><u>M</u>arkdown</button>
                     </span>
                      <span class="button_label">Format</span> 
                 </div>
                 <div class="section_row">
                     <span id="cell_output" class="section_row_buttons">
                         <button id="toggle_output"><u>T</u>oggle</button>
                         <button id="clear_all_output">ClearAll</button>
                     </span>
                     <span class="button_label">Output</span>
                 </div>
                 <div class="section_row">
                     <span id="insert" class="section_row_buttons">
                         <button id="insert_cell_above"><u>A</u>bove</button>
                         <button id="insert_cell_below"><u>B</u>elow</button>
                     </span>
                     <span class="button_label">Insert</span>
                 </div>
                 <div class="section_row">
                     <span id="move" class="section_row_buttons">
                         <button id="move_cell_up">Up</button>
                         <button id="move_cell_down">Down</button>
                     </span>
                     <span class="button_label">Move</span>
                 </div>
                 <div class="section_row">
                     <span id="run_cells" class="section_row_buttons">
                         <button id="run_selected_cell">Selected</button>
                         <button id="run_all_cells">All</button>
                     </span>
                     <span class="button_label">Run</span>
                 </div>
                 <div class="section_row">
                     <span id="autoindent_span">
                         <input type="checkbox" id="autoindent" checked="true"></input>
                     </span>
                     <span class="checkbox_label" id="autoindent_label">Autoindent:</span>
                 </div>
             </div>
         </div>
 
         <div id="kernel_section">
             <div class="section_header">
                 <h3>Kernel</h3>
             </div>
             <div class="section_content">
                 <div class="section_row">
                     <span id="int_restart" class="section_row_buttons">
                         <button id="int_kernel"><u>I</u>nterrupt</button>
                         <button id="restart_kernel">Restart</button>
                     </span>
                     <span class="section_row_header">Actions</span>
                 </div>
                 <div class="section_row">
                     <span id="kernel_persist">
                         {% if kill_kernel %}
                             <input type="checkbox" id="kill_kernel" checked="true"></input>
                         {% else %}
                             <input type="checkbox" id="kill_kernel"></input>
                         {% end %}
                     </span>
                     <span class="checkbox_label" id="kill_kernel_label">Kill kernel upon exit:</span>
                 </div>
             </div>
         </div>
 
         <div id="help_section">
             <div class="section_header">
                 <h3>Help</h3>
             </div>
             <div class="section_content">
                 <div class="section_row">
                     <span id="help_buttons0" class="section_row_buttons">
                         <a id="python_help" href="http://docs.python.org" target="_blank">Python</a>
                         <a id="ipython_help" href="http://ipython.org/documentation.html" target="_blank">IPython</a>
                     </span>
                     <span class="section_row_header">Links</span>
                 </div>
                 <div class="section_row">
                     <span id="help_buttons1" class="section_row_buttons">
                         <a id="numpy_help" href="http://docs.scipy.org/doc/numpy/reference/" target="_blank">NumPy</a>
                         <a id="scipy_help" href="http://docs.scipy.org/doc/scipy/reference/" target="_blank">SciPy</a>
                     </span>
                 </div>
                 <div class="section_row">
                     <span id="help_buttons2" class="section_row_buttons">
                         <a id="matplotlib_help" href="http://matplotlib.sourceforge.net/" target="_blank">MPL</a>
                         <a id="sympy_help" href="http://docs.sympy.org/dev/index.html" target="_blank">SymPy</a>
                     </span>
                 </div>
                 <div class="section_row">
                     <span class="help_string">run selected cell</span>
                     <span class="help_string_label">Shift-Enter :</span>
                 </div>
                 <div class="section_row">
                     <span class="help_string">run selected cell in-place</span>
                     <span class="help_string_label">Ctrl-Enter  :</span>
                 </div>
                 <div class="section_row">
                     <span class="help_string">show keyboard shortcuts</span>
                     <span class="help_string_label">Ctrl-m h  :</span>
                 </div>
             </div>
         </div>
 
         <div id="config_section">
             <div class="section_header">
                 <h3>Configuration</h3>
             </div>
             <div class="section_content">
                 <div class="section_row">
                     <span id="tooltipontab_span">
                         <input type="checkbox" id="tooltipontab" checked="true"></input>
                     </span>
                     <span class="checkbox_label" id="tooltipontab_label">Tooltip on tab:</span>
                 </div>
                 <div class="section_row">
                     <span id="smartcompleter_span">
                         <input type="checkbox" id="smartcompleter" checked="true"></input>
                     </span>
                     <span class="checkbox_label" id="smartcompleter_label">Smart completer:</span>
                 </div>
                 <div class="section_row">
                     <span id="timebeforetooltip_span">
                         <input type="text" id="timebeforetooltip" value="1200" size='6'></input>
                         <span class="numeric_input_label" id="timebeforetooltip_unit">milliseconds</span>
                     </span>
                     <span class="numeric_input_label" id="timebeforetooltip_label">Time before tooltip : </span>
                 </div>
             </div>
         </div>
 
     </div>
     <div id="left_panel_splitter"></div>
     <div id="notebook_panel">
         <div id="notebook"></div>
         <div id="pager_splitter"></div>
         <div id="pager"></div>
     </div>
 
 </div>
 
-<script src="static/jquery/js/jquery-1.6.2.min.js" type="text/javascript" charset="utf-8"></script>
-<script src="static/jquery/js/jquery-ui-1.8.14.custom.min.js" type="text/javascript" charset="utf-8"></script>
-<script src="static/jquery/js/jquery.autogrow.js" type="text/javascript" charset="utf-8"></script>
+<script src="/static/jquery/js/jquery-1.6.2.min.js" type="text/javascript" charset="utf-8"></script>
+<script src="/static/jquery/js/jquery-ui-1.8.14.custom.min.js" type="text/javascript" charset="utf-8"></script>
+<script src="/static/jquery/js/jquery.autogrow.js" type="text/javascript" charset="utf-8"></script>
 
-<script src="static/codemirror/lib/codemirror.js" charset="utf-8"></script>
-<script src="static/codemirror/mode/python/python.js" charset="utf-8"></script>
-<script src="static/codemirror/mode/htmlmixed/htmlmixed.js" charset="utf-8"></script>
-<script src="static/codemirror/mode/xml/xml.js" charset="utf-8"></script>
-<script src="static/codemirror/mode/javascript/javascript.js" charset="utf-8"></script>
-<script src="static/codemirror/mode/css/css.js" charset="utf-8"></script>
-<script src="static/codemirror/mode/rst/rst.js" charset="utf-8"></script>
-<script src="static/codemirror/mode/markdown/markdown.js" charset="utf-8"></script>
+<script src="/static/codemirror/lib/codemirror.js" charset="utf-8"></script>
+<script src="/static/codemirror/mode/python/python.js" charset="utf-8"></script>
+<script src="/static/codemirror/mode/htmlmixed/htmlmixed.js" charset="utf-8"></script>
+<script src="/static/codemirror/mode/xml/xml.js" charset="utf-8"></script>
+<script src="/static/codemirror/mode/javascript/javascript.js" charset="utf-8"></script>
+<script src="/static/codemirror/mode/css/css.js" charset="utf-8"></script>
+<script src="/static/codemirror/mode/rst/rst.js" charset="utf-8"></script>
+<script src="/static/codemirror/mode/markdown/markdown.js" charset="utf-8"></script>
 
-<script src="static/pagedown/Markdown.Converter.js" charset="utf-8"></script>
+<script src="/static/pagedown/Markdown.Converter.js" charset="utf-8"></script>
 
-<script src="static/prettify/prettify.js" charset="utf-8"></script>
+<script src="/static/prettify/prettify.js" charset="utf-8"></script>
 
-<script src="static/js/namespace.js" type="text/javascript" charset="utf-8"></script>
-<script src="static/js/utils.js" type="text/javascript" charset="utf-8"></script>
-<script src="static/js/cell.js" type="text/javascript" charset="utf-8"></script>
-<script src="static/js/codecell.js" type="text/javascript" charset="utf-8"></script>
-<script src="static/js/textcell.js" type="text/javascript" charset="utf-8"></script>
-<script src="static/js/kernel.js" type="text/javascript" charset="utf-8"></script>
-<script src="static/js/kernelstatus.js" type="text/javascript" charset="utf-8"></script>
-<script src="static/js/layout.js" type="text/javascript" charset="utf-8"></script>
-<script src="static/js/savewidget.js" type="text/javascript" charset="utf-8"></script>
-<script src="static/js/quickhelp.js" type="text/javascript" charset="utf-8"></script>
-<script src="static/js/loginwidget.js" type="text/javascript" charset="utf-8"></script>
-<script src="static/js/pager.js" type="text/javascript" charset="utf-8"></script>
-<script src="static/js/panelsection.js" type="text/javascript" charset="utf-8"></script>
-<script src="static/js/printwidget.js" type="text/javascript" charset="utf-8"></script>
-<script src="static/js/leftpanel.js" type="text/javascript" charset="utf-8"></script>
-<script src="static/js/notebook.js" type="text/javascript" charset="utf-8"></script>
-<script src="static/js/notebookmain.js" type="text/javascript" charset="utf-8"></script>
+<script src="/static/js/namespace.js" type="text/javascript" charset="utf-8"></script>
+<script src="/static/js/utils.js" type="text/javascript" charset="utf-8"></script>
+<script src="/static/js/cell.js" type="text/javascript" charset="utf-8"></script>
+<script src="/static/js/codecell.js" type="text/javascript" charset="utf-8"></script>
+<script src="/static/js/textcell.js" type="text/javascript" charset="utf-8"></script>
+<script src="/static/js/kernel.js" type="text/javascript" charset="utf-8"></script>
+<script src="/static/js/kernelstatus.js" type="text/javascript" charset="utf-8"></script>
+<script src="/static/js/layout.js" type="text/javascript" charset="utf-8"></script>
+<script src="/static/js/savewidget.js" type="text/javascript" charset="utf-8"></script>
+<script src="/static/js/quickhelp.js" type="text/javascript" charset="utf-8"></script>
+<script src="/static/js/loginwidget.js" type="text/javascript" charset="utf-8"></script>
+<script src="/static/js/pager.js" type="text/javascript" charset="utf-8"></script>
+<script src="/static/js/panelsection.js" type="text/javascript" charset="utf-8"></script>
+<script src="/static/js/printwidget.js" type="text/javascript" charset="utf-8"></script>
+<script src="/static/js/leftpanel.js" type="text/javascript" charset="utf-8"></script>
+<script src="/static/js/notebook.js" type="text/javascript" charset="utf-8"></script>
+<script src="/static/js/notebookmain.js" type="text/javascript" charset="utf-8"></script>
 
 </body>
 
 </html>

IPython/frontend/html/notebook/templates/projectdashboard.html

@@ -1,43 +1,43 b''
 {% extends layout.html %}
 
 {% block title %}
 IPython Dashboard
 {% end %}
 
 {% block stylesheet %}
-    <link rel="stylesheet" href="static/css/projectdashboard.css" type="text/css" />
+    <link rel="stylesheet" href="/static/css/projectdashboard.css" type="text/css" />
 {% end %}
 
 {% block meta %}
     <meta name="read_only" content="{{read_only}}"/>
 {% end %}
 
 {% block params %}
 data-project={{project}}
 data-base-project-url={{base_project_url}}
 data-base-kernel-url={{base_kernel_url}}
 {% end %}
 
 {% block content_panel %}
     {% if logged_in or not read_only %}
 
     <div id="content_toolbar">
         <span id="drag_info">Drag files onto the list to import
         notebooks.</span>
 
         <span id="notebooks_buttons">
           <button id="new_notebook">New Notebook</button>
         </span>
     </div>
 
     {% end %}
 
     <div id="notebook_list">
         <div id="project_name"><h2>{{project}}</h2></div>
     </div>
 {% end %}
 
 {% block script %}
-    <script src="static/js/notebooklist.js" type="text/javascript" charset="utf-8"></script>
-    <script src="static/js/projectdashboardmain.js" type="text/javascript" charset="utf-8"></script>
+    <script src="/static/js/notebooklist.js" type="text/javascript" charset="utf-8"></script>
+    <script src="/static/js/projectdashboardmain.js" type="text/javascript" charset="utf-8"></script>
 {% end %}

docs/examples/notebooks/00_notebook_tour.ipynb

@@ -1,924 +1,963 b''
 {
  "metadata": {
   "name": "00_notebook_tour"
  }, 
  "nbformat": 2, 
  "worksheets": [
   {
    "cells": [
     {
      "cell_type": "markdown", 
      "source": [
       "# A brief tour of the IPython notebook", 
       "", 
       "This document will give you a brief tour of the capabilities of the IPython notebook.  ", 
       "You can view its contents by scrolling around, or execute each cell by typing `Shift-Enter`.", 
       "After you conclude this brief high-level tour, you should read the accompanying notebook ", 
       "titled `01_notebook_introduction`, which takes a more step-by-step approach to the features of the", 
       "system.  ", 
       "", 
       "The rest of the notebooks in this directory illustrate various other aspects and ", 
       "capabilities of the IPython notebook; some of them may require additional libraries to be executed.", 
       "", 
       "**NOTE:** This notebook *must* be run from its own directory, so you must ``cd``", 
       "to this directory and then start the notebook, but do *not* use the ``--notebook-dir``", 
       "option to run it from another location.", 
       "", 
       "The first thing you need to know is that you are still controlling the same old IPython you're used to,", 
       "so things like shell aliases and magic commands still work:"
      ]
     }, 
     {
      "cell_type": "code", 
      "collapsed": false, 
      "input": [
       "pwd"
      ], 
      "language": "python", 
      "outputs": [
       {
        "output_type": "pyout", 
        "prompt_number": 1, 
        "text": [
         "u'/home/fperez/ipython/ipython/docs/examples/notebooks'"
        ]
       }
      ], 
      "prompt_number": 1
     }, 
     {
      "cell_type": "code", 
      "collapsed": false, 
      "input": [
       "ls"
      ], 
      "language": "python", 
      "outputs": [
       {
        "output_type": "stream", 
        "stream": "stdout", 
        "text": [
         "00_notebook_tour.ipynb          python-logo.svg", 
         "01_notebook_introduction.ipynb  sympy.ipynb", 
         "animation.m4v                   sympy_quantum_computing.ipynb", 
         "display_protocol.ipynb          trapezoid_rule.ipynb", 
         "formatting.ipynb"
        ]
       }
      ], 
      "prompt_number": 2
     }, 
     {
      "cell_type": "code", 
      "collapsed": false, 
      "input": [
       "message = 'The IPython notebook is great!'", 
       "# note: the echo command does not run on Windows, it's a unix command.", 
       "!echo $message"
      ], 
      "language": "python", 
      "outputs": [
       {
        "output_type": "stream", 
        "stream": "stdout", 
        "text": [
         "The IPython notebook is great!"
        ]
       }
      ], 
      "prompt_number": 3
     }, 
     {
      "cell_type": "markdown", 
      "source": [
       "Plots with matplotlib: do *not* execute the next below if you do not have matplotlib installed or didn't start up ", 
       "this notebook with the `--pylab` option, as the code will not work."
      ]
     }, 
     {
      "cell_type": "code", 
      "collapsed": false, 
      "input": [
       "x = linspace(0, 3*pi, 500)", 
       "plot(x, sin(x**2))", 
       "title('A simple chirp');"
      ], 
      "language": "python", 
      "outputs": [
       {
        "output_type": "display_data", 
        "png": 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wZcoUR8LXhfffB6ZPd77BdCMKSp/X0wfUnmJFERTpOx0qYoUOT19lwTVeTz9q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\nAwODbgRD+gYGBgbdCIb0DQwMDLoR/j8U8QHdaUyIsAAAAABJRU5ErkJggg==\n"
       }
      ], 
      "prompt_number": 4
     }, 
     {
      "cell_type": "markdown", 
      "source": [
       "You can paste blocks of input with prompt markers, such as those from", 
       "[the official Python tutorial](http://docs.python.org/tutorial/interpreter.html#interactive-mode)"
      ]
     }, 
     {
      "cell_type": "code", 
      "collapsed": false, 
      "input": [
       ">>> the_world_is_flat = 1", 
       ">>> if the_world_is_flat:", 
       "...     print \"Be careful not to fall off!\""
      ], 
      "language": "python", 
      "outputs": [
       {
        "output_type": "stream", 
        "stream": "stdout", 
        "text": [
         "Be careful not to fall off!"
        ]
       }
      ], 
      "prompt_number": 5
     }, 
     {
      "cell_type": "markdown", 
      "source": [
       "Errors are shown in informative ways:"
      ]
     }, 
     {
      "cell_type": "code", 
      "collapsed": false, 
      "input": [
       "%run non_existent_file"
      ], 
      "language": "python", 
      "outputs": [
       {
        "output_type": "stream", 
        "stream": "stderr", 
        "text": [
         "ERROR: File `non_existent_file.py` not found."
        ]
       }
      ], 
      "prompt_number": 6
     }, 
     {
      "cell_type": "code", 
      "collapsed": false, 
      "input": [
       "x = 1", 
       "y = 4", 
       "z = y/(1-x)"
      ], 
      "language": "python", 
      "outputs": [
       {
        "ename": "ZeroDivisionError", 
        "evalue": "integer division or modulo by zero", 
        "output_type": "pyerr", 
        "traceback": [
         "<span class=\"ansired\">---------------------------------------------------------------------------</span>\n<span class=\"ansired\">ZeroDivisionError</span>                         Traceback (most recent call last)", 
         "<span class=\"ansigreen\">/home/fperez/ipython/ipython/docs/examples/notebooks/&lt;ipython-input-7-dc39888fd1d2&gt;</span> in <span class=\"ansicyan\">&lt;module&gt;</span><span class=\"ansiblue\">()</span>\n<span class=\"ansigreen\">      1</span> x <span class=\"ansiyellow\">=</span> <span class=\"ansicyan\">1</span><span class=\"ansiyellow\"></span>\n<span class=\"ansigreen\">      2</span> y <span class=\"ansiyellow\">=</span> <span class=\"ansicyan\">4</span><span class=\"ansiyellow\"></span>\n<span class=\"ansigreen\">----&gt; 3</span><span class=\"ansiyellow\"> </span>z <span class=\"ansiyellow\">=</span> y<span class=\"ansiyellow\">/</span><span class=\"ansiyellow\">(</span><span class=\"ansicyan\">1</span><span class=\"ansiyellow\">-</span>x<span class=\"ansiyellow\">)</span><span class=\"ansiyellow\"></span>\n", 
         "<span class=\"ansired\">ZeroDivisionError</span>: integer division or modulo by zero"
        ]
       }
      ], 
      "prompt_number": 7
     }, 
     {
      "cell_type": "markdown", 
      "source": [
       "When IPython needs to display additional information (such as providing details on an object via `x?`", 
       "it will automatically invoke a pager at the bottom of the screen:"
      ]
     }, 
     {
      "cell_type": "code", 
      "collapsed": true, 
      "input": [
       "magic"
      ], 
      "language": "python", 
      "outputs": [], 
      "prompt_number": 8
     }, 
     {
      "cell_type": "markdown", 
      "source": [
       "## Non-blocking output of kernel", 
       "", 
       "If you execute the next cell, you will see the output arriving as it is generated, not all at the end."
      ]
     }, 
     {
      "cell_type": "code", 
      "collapsed": false, 
      "input": [
       "import time, sys", 
       "for i in range(8):", 
       "    print i,", 
       "    time.sleep(0.5)"
      ], 
      "language": "python", 
      "outputs": [
       {
        "output_type": "stream", 
        "stream": "stdout", 
        "text": [
         "0 "
        ]
       }, 
       {
        "output_type": "stream", 
        "stream": "stdout", 
        "text": [
         "1 "
        ]
       }, 
       {
        "output_type": "stream", 
        "stream": "stdout", 
        "text": [
         "2 "
        ]
       }, 
       {
        "output_type": "stream", 
        "stream": "stdout", 
        "text": [
         "3 "
        ]
       }, 
       {
        "output_type": "stream", 
        "stream": "stdout", 
        "text": [
         "4 "
        ]
       }, 
       {
        "output_type": "stream", 
        "stream": "stdout", 
        "text": [
         "5 "
        ]
       }, 
       {
        "output_type": "stream", 
        "stream": "stdout", 
        "text": [
         "6 "
        ]
       }, 
       {
        "output_type": "stream", 
        "stream": "stdout", 
        "text": [
         "7"
        ]
       }
      ], 
      "prompt_number": 9
     }, 
     {
      "cell_type": "markdown", 
      "source": [
       "## Clean crash and restart", 
       "", 
       "We call the low-level system libc.time routine with the wrong argument via", 
       "ctypes to segfault the Python interpreter:"
      ]
     }, 
     {
      "cell_type": "code", 
      "collapsed": true, 
      "input": [
       "from ctypes import CDLL", 
       "# This will crash a linux system; equivalent calls can be made on Windows or Mac", 
       "libc = CDLL(\"libc.so.6\") ", 
       "libc.time(-1)  # BOOM!!"
      ], 
      "language": "python", 
      "outputs": [], 
      "prompt_number": "*"
     }, 
     {
      "cell_type": "markdown", 
      "source": [
       "## Markdown cells can contain formatted text and code", 
       "", 
       "You can *italicize*, **boldface**", 
       "", 
       "* build", 
       "* lists", 
       "", 
       "and embed code meant for illustration instead of execution in Python:", 
       "", 
       "    def f(x):", 
       "        \"\"\"a docstring\"\"\"", 
       "        return x**2", 
       "", 
       "or other languages:", 
       "", 
       "    if (i=0; i<n; i++) {", 
       "      printf(\"hello %d\\n\", i);", 
       "      x += 4;", 
       "    }"
      ]
     }, 
     {
      "cell_type": "markdown", 
      "source": [
       "Courtesy of MathJax, you can include mathematical expressions both inline: ", 
       "$e^{i\\pi} + 1 = 0$  and displayed:", 
       "", 
       "$$e^x=\\sum_{i=0}^\\infty \\frac{1}{i!}x^i$$"
      ]
     }, 
     {
      "cell_type": "markdown", 
      "source": [
       "## Rich displays: include anyting a browser can show", 
       "", 
       "Note that we have an actual protocol for this, see the `display_protocol` notebook for further details.", 
       "", 
       "### Images"
      ]
     }, 
     {
      "cell_type": "code", 
      "collapsed": false, 
      "input": [
       "from IPython.core.display import Image", 
       "Image(filename='../../source/_static/logo.png')"
      ], 
      "language": "python", 
      "outputs": [
       {
        "output_type": "pyout", 
        "png": 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
        "prompt_number": 1, 
        "text": [
         "&lt;IPython.core.display.Image at 0x41d4690&gt;"
        ]
       }
      ], 
      "prompt_number": 1
     }, 
     {
      "cell_type": "markdown", 
      "source": [
       "An image can also be displayed from raw data or a url"
      ]
     }, 
     {
      "cell_type": "code", 
      "collapsed": false, 
      "input": [
       "Image('http://python.org/images/python-logo.gif')"
      ], 
      "language": "python", 
      "outputs": [
       {
        "html": [
         "<img src=\"http://python.org/images/python-logo.gif\" />"
        ], 
        "output_type": "pyout", 
        "prompt_number": 2, 
        "text": [
         "&lt;IPython.core.display.Image at 0x41d4550&gt;"
        ]
       }
      ], 
      "prompt_number": 2
     }, 
     {
      "cell_type": "markdown", 
      "source": [
       "SVG images are also supported out of the box (since modern browsers do a good job of rendering them):"
      ]
     }, 
     {
      "cell_type": "code", 
      "collapsed": false, 
      "input": [
       "from IPython.core.display import SVG", 
       "SVG(filename='python-logo.svg')"
      ], 
      "language": "python", 
      "outputs": [
       {
        "output_type": "pyout", 
        "prompt_number": 3, 
        "svg": [
         "<svg height=\"115.02pt\" id=\"svg2\" inkscape:version=\"0.43\" sodipodi:docbase=\"/home/sdeibel\" sodipodi:docname=\"logo-python-generic.svg\" sodipodi:version=\"0.32\" version=\"1.0\" width=\"388.84pt\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:cc=\"http://web.resource.org/cc/\" xmlns:dc=\"http://purl.org/dc/elements/1.1/\" xmlns:inkscape=\"http://www.inkscape.org/namespaces/inkscape\" xmlns:rdf=\"http://www.w3.org/1999/02/22-rdf-syntax-ns#\" xmlns:sodipodi=\"http://inkscape.sourceforge.net/DTD/sodipodi-0.dtd\" xmlns:svg=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">", 
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         "    <rdf:RDF>", 
         "      <cc:Work rdf:about=\"\">", 
         "        <dc:format>image/svg+xml</dc:format>", 
         "        <dc:type rdf:resource=\"http://purl.org/dc/dcmitype/StillImage\"/>", 
         "      </cc:Work>", 
         "    </rdf:RDF>", 
         "  </metadata>", 
         "  <sodipodi:namedview bordercolor=\"#666666\" borderopacity=\"1.0\" id=\"base\" inkscape:current-layer=\"svg2\" inkscape:cx=\"243.02499\" inkscape:cy=\"71.887497\" inkscape:pageopacity=\"0.0\" inkscape:pageshadow=\"2\" inkscape:window-height=\"543\" inkscape:window-width=\"791\" inkscape:window-x=\"0\" inkscape:window-y=\"0\" inkscape:zoom=\"1.4340089\" pagecolor=\"#ffffff\"/>", 
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         "      <stop id=\"stop3244\" offset=\"0\" style=\"stop-color:#f4f4f4;stop-opacity:1\"/>", 
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         "    </linearGradient>", 
         "    <linearGradient id=\"linearGradient4671\">", 
         "      <stop id=\"stop4673\" offset=\"0\" style=\"stop-color:#ffd43b;stop-opacity:1\"/>", 
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         "  </g>", 
         "</svg>"
        ], 
        "text": [
         "&lt;IPython.core.display.SVG at 0x41d4910&gt;"
        ]
       }
      ], 
      "prompt_number": 3
     }, 
     {
      "cell_type": "markdown", 
      "source": [
       "### Video"
      ]
     }, 
     {
      "cell_type": "markdown", 
      "source": [
       "And more exotic objects can also be displayed, as long as their representation supports ", 
       "the IPython display protocol.", 
       "", 
       "For example, videos hosted externally on YouTube are easy to load (and writing a similar wrapper for other", 
       "hosted content is trivial):"
      ]
     }, 
     {
      "cell_type": "code", 
      "collapsed": false, 
      "input": [
       "from IPython.lib.display import YouTubeVideo", 
       "# a talk about IPython at Sage Days at U. Washington, Seattle.", 
       "# Video credit: William Stein.", 
       "YouTubeVideo('1j_HxD4iLn8')"
      ], 
      "language": "python", 
      "outputs": [
       {
        "html": [
         "", 
         "            <iframe", 
         "                width=\"400\"", 
         "                height=\"300\"", 
         "                src=\"http://www.youtube.com/embed/1j_HxD4iLn8\"", 
         "                frameborder=\"0\"", 
         "                allowfullscreen", 
         "            ></iframe>", 
         "        "
        ], 
        "output_type": "pyout", 
        "prompt_number": 4, 
        "text": [
         "&lt;IPython.lib.display.YouTubeVideo at 0x41d4310&gt;"
        ]
       }
      ], 
      "prompt_number": 4
     }, 
     {
      "cell_type": "markdown", 
      "source": [
       "Using the nascent video capabilities of modern browsers, you may also be able to display local", 
       "videos.  At the moment this doesn't work very well in all browsers, so it may or may not work for you;", 
       "we will continue testing this and looking for ways to make it more robust.  ", 
       "", 
       "The following cell loads a local file called  `animation.m4v`, encodes the raw video as base64 for http", 
       "transport, and uses the HTML5 video tag to load it. On Chrome 15 it works correctly, displaying a control", 
       "bar at the bottom with a play/pause button and a location slider."
      ]
     }, 
     {
      "cell_type": "code", 
      "collapsed": false, 
      "input": [
       "from IPython.core.display import HTML", 
       "video = open(\"animation.m4v\", \"rb\").read()", 
       "video_encoded = video.encode(\"base64\")", 
       "video_tag = '<video controls alt=\"test\" src=\"data:video/x-m4v;base64,{0}\">'.format(video_encoded)", 
       "HTML(data=video_tag)"
      ], 
      "language": "python", 
      "outputs": [
       {
        "html": [
         "<video controls alt=\"test\" src=\"data:video/x-m4v;base64,AAAAHGZ0eXBNNFYgAAACAGlzb21pc28yYXZjMQAAAAhmcmVlAAAqiW1kYXQAAAKMBgX//4jcRem9", 
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        ], 
        "output_type": "pyout", 
        "prompt_number": 5, 
        "text": [
         "&lt;IPython.core.display.HTML at 0x423a550&gt;"
        ]
       }
      ], 
      "prompt_number": 5
     }, 
     {
      "cell_type": "markdown", 
      "source": [
+      "## Local Files", 
+      "", 
+      "The above examples embed images and video from the notebook filesystem in the output", 
+      "areas of code cells.  It is also possible to request these files directly in markdown cells", 
+      "if they reside in the notebook directory via relative urls prefixed with `files/`:", 
+      "", 
+      "    files/[subdirectory/]<filename>", 
+      "", 
+      "", 
+      "For example, in the example notebook folder, we have the Python logo, addressed as:", 
+      "", 
+      "    <img src=\"files/python-logo.svg\" />", 
+      "", 
+      "<img src=\"files/python-logo.svg\" />", 
+      "", 
+      "and a video with the HTML5 video tag:", 
+      "", 
+      "    <video controls src=\"files/animation.m4v\" />", 
+      "", 
+      "<video controls src=\"files/animation.m4v\" />", 
+      "", 
+      "These do not embed the data into the notebook file,", 
+      "and require that the files exist when you are viewing the notebook.", 
+      "", 
+      "### Security of local files", 
+      "", 
+      "Note that this means that the IPython notebook server also acts as a generic file server", 
+      "for files inside the same tree as your notebooks.  Access is not granted outside the", 
+      "notebook folder so you have strict control over what files are visible, but for this", 
+      "reason it is highly recommended that you do not run the notebook server with a notebook", 
+      "directory at a high level in your filesystem (e.g. your home directory).", 
+      "", 
+      "When you run the notebook in a password-protected manner, local file access is restricted", 
+      "to authenticated users unless read-only views are active."
+     ]
+    }, 
+    {
+     "cell_type": "markdown", 
+     "source": [
       "### External sites", 
       "", 
       "You can even embed an entire page from another site in an iframe; for example this is today's Wikipedia", 
       "page for mobile users:"
      ]
     }, 
     {
      "cell_type": "code", 
      "collapsed": false, 
      "input": [
       "HTML('<iframe src=http://en.mobile.wikipedia.org/?useformat=mobile width=700 height=350>')"
      ], 
      "language": "python", 
      "outputs": [
       {
        "html": [
         "<iframe src=http://en.mobile.wikipedia.org/?useformat=mobile width=700 height=350>"
        ], 
        "output_type": "pyout", 
        "prompt_number": 6, 
        "text": [
         "&lt;IPython.core.display.HTML at 0x41d4710&gt;"
        ]
       }
      ], 
      "prompt_number": 6
     }, 
     {
      "cell_type": "markdown", 
      "source": [
       "### Mathematics", 
       "", 
       "And we also support the display of mathematical expressions typeset in LaTeX, which is rendered", 
       "in the browser thanks to the [MathJax library](http://mathjax.org).  ", 
       "", 
       "Note that this is *different* from the above examples.  Above we were typing mathematical expressions", 
       "in Markdown cells (along with normal text) and letting the browser render them; now we are displaying", 
       "the output of a Python computation as a LaTeX expression wrapped by the `Math()` object so the browser", 
       "renders it:"
      ]
     }, 
     {
      "cell_type": "code", 
      "collapsed": false, 
      "input": [
       "from IPython.core.display import Math", 
       "Math(r'$F(k) = \\int_{-\\infty}^{\\infty} f(x) e^{2\\pi i k} dx$')"
      ], 
      "language": "python", 
      "outputs": [
       {
        "latex": [
         "$F(k) = \\int_{-\\infty}^{\\infty} f(x) e^{2\\pi i k} dx$"
        ], 
        "output_type": "pyout", 
        "prompt_number": 8, 
        "text": [
         "&lt;IPython.core.display.Math at 0x45840d0&gt;"
        ]
       }
      ], 
      "prompt_number": 8
     }, 
     {
      "cell_type": "markdown", 
      "source": [
       "# Loading external codes", 
       "* Drag and drop a ``.py`` in the dashboard", 
       "* Use ``%loadpy`` with any local or remote url: [the Matplotlib Gallery!](http://matplotlib.sourceforge.net/gallery.html)", 
       "", 
       "In this notebook we've kept the output saved so you can see the result, but you should run the next", 
       "cell yourself (with an active internet connection)."
      ]
     }, 
     {
      "cell_type": "code", 
      "collapsed": true, 
      "input": [
       "%loadpy http://matplotlib.sourceforge.net/mpl_examples/pylab_examples/integral_demo.py"
      ], 
      "language": "python", 
      "outputs": [], 
      "prompt_number": 8
     }, 
     {
      "cell_type": "code", 
      "collapsed": false, 
      "input": [
       "#!/usr/bin/env python", 
       "", 
       "# implement the example graphs/integral from pyx", 
       "from pylab import *", 
       "from matplotlib.patches import Polygon", 
       "", 
       "def func(x):", 
       "    return (x-3)*(x-5)*(x-7)+85", 
       "", 
       "ax = subplot(111)", 
       "", 
       "a, b = 2, 9 # integral area", 
       "x = arange(0, 10, 0.01)", 
       "y = func(x)", 
       "plot(x, y, linewidth=1)", 
       "", 
       "# make the shaded region", 
       "ix = arange(a, b, 0.01)", 
       "iy = func(ix)", 
       "verts = [(a,0)] + zip(ix,iy) + [(b,0)]", 
       "poly = Polygon(verts, facecolor='0.8', edgecolor='k')", 
       "ax.add_patch(poly)", 
       "", 
       "text(0.5 * (a + b), 30,", 
       "     r\"$\\int_a^b f(x)\\mathrm{d}x$\", horizontalalignment='center',", 
       "     fontsize=20)", 
       "", 
       "axis([0,10, 0, 180])", 
       "figtext(0.9, 0.05, 'x')", 
       "figtext(0.1, 0.9, 'y')", 
       "ax.set_xticks((a,b))", 
       "ax.set_xticklabels(('a','b'))", 
       "ax.set_yticks([])", 
       "show()"
      ], 
      "language": "python", 
      "outputs": [
       {
        "output_type": "display_data", 
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       }
      ], 
      "prompt_number": 9
     }, 
     {
      "cell_type": "code", 
      "collapsed": true, 
      "input": [], 
      "language": "python", 
      "outputs": [], 
      "prompt_number": "&nbsp;"
     }
    ]
   }
  ]
 }
  No newline at end of file