##// END OF EJS Templates
Backport PR #4163: Fix for incorrect default encoding on Windows....
Backport PR #4163: Fix for incorrect default encoding on Windows. Whilst trying out rendering notebooks in a flask app under Apache on Windows I got the below error when simply trying to import `SlidesExporter` ```python mod_wsgi (pid=6260): Exception occurred processing WSGI script 'flask_test.wsgi'. Traceback (most recent call last): File "flask_test.py", line 81, in render_notebook from IPython.nbconvert.exporters import SlidesExporter File "c:\\dev\\code\\ipython\\IPython\\__init__.py", line 47, in <module> from .terminal.embed import embed File "c:\\dev\\code\\ipython\\IPython\\terminal\\embed.py", line 32, in <module> from IPython.terminal.interactiveshell import TerminalInteractiveShell File "c:\\dev\\code\\ipython\\IPython\\terminal\\interactiveshell.py", line 25, in <module> from IPython.core.interactiveshell import InteractiveShell, InteractiveShellABC File "c:\\dev\\code\\ipython\\IPython\\core\\interactiveshell.py", line 59, in <module> from IPython.core.prompts import PromptManager File "c:\\dev\\code\\ipython\\IPython\\core\\prompts.py", line 138, in <module> HOME = py3compat.str_to_unicode(os.environ.get("HOME","//////:::::ZZZZZ,,,~~~")) File "c:\\dev\\code\\ipython\\IPython\\utils\\py3compat.py", line 18, in decode return s.decode(encoding, "replace") LookupError: unknown encoding: cp0 ``` A little bit of [googling](http://bugs.python.org/issue6501) suggests that Windows returns 'cp0' to indicate there is no code page. This fix simply looks for this invalid value and replaces it with something valid. With this change it works for me.

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handlers.py
91 lines | 2.8 KiB | text/x-python | PythonLexer
"""Tornado handlers for the live notebook view.
Authors:
* Brian Granger
"""
#-----------------------------------------------------------------------------
# Copyright (C) 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 os
from tornado import web
HTTPError = web.HTTPError
from ..base.handlers import IPythonHandler
from ..utils import url_path_join
#-----------------------------------------------------------------------------
# Handlers
#-----------------------------------------------------------------------------
class NewHandler(IPythonHandler):
@web.authenticated
def get(self):
notebook_id = self.notebook_manager.new_notebook()
self.redirect(url_path_join(self.base_project_url, notebook_id))
class NamedNotebookHandler(IPythonHandler):
@web.authenticated
def get(self, notebook_id):
nbm = self.notebook_manager
if not nbm.notebook_exists(notebook_id):
raise web.HTTPError(404, u'Notebook does not exist: %s' % notebook_id)
self.write(self.render_template('notebook.html',
project=self.project,
notebook_id=notebook_id,
kill_kernel=False,
mathjax_url=self.mathjax_url,
)
)
class NotebookRedirectHandler(IPythonHandler):
@web.authenticated
def get(self, notebook_name):
# strip trailing .ipynb:
notebook_name = os.path.splitext(notebook_name)[0]
notebook_id = self.notebook_manager.rev_mapping.get(notebook_name, '')
if notebook_id:
url = url_path_join(self.settings.get('base_project_url', '/'), notebook_id)
return self.redirect(url)
else:
raise HTTPError(404)
class NotebookCopyHandler(IPythonHandler):
@web.authenticated
def get(self, notebook_id):
notebook_id = self.notebook_manager.copy_notebook(notebook_id)
self.redirect(url_path_join(self.base_project_url, notebook_id))
#-----------------------------------------------------------------------------
# URL to handler mappings
#-----------------------------------------------------------------------------
_notebook_id_regex = r"(?P<notebook_id>\w+-\w+-\w+-\w+-\w+)"
_notebook_name_regex = r"(?P<notebook_name>.+\.ipynb)"
default_handlers = [
(r"/new", NewHandler),
(r"/%s" % _notebook_id_regex, NamedNotebookHandler),
(r"/%s" % _notebook_name_regex, NotebookRedirectHandler),
(r"/%s/copy" % _notebook_id_regex, NotebookCopyHandler),
]