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"""Module that allows custom Sphinx parameters to be set on the notebook and
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on the 'other' object passed into Jinja. Called prior to Jinja conversion
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process.
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"""
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#-----------------------------------------------------------------------------
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# Copyright (c) 2013, the IPython Development Team.
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#
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# Distributed under the terms of the Modified BSD License.
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#
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# The full license is in the file COPYING.txt, distributed with this software.
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#-----------------------------------------------------------------------------
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#-----------------------------------------------------------------------------
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# Imports
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#-----------------------------------------------------------------------------
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from __future__ import print_function, absolute_import
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# Stdlib imports
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import os.path
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# Used to set the default date to today's date
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from datetime import date
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# Third-party imports
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# Needed for Pygments latex definitions.
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from pygments.formatters import LatexFormatter
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# Our own imports
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# Configurable traitlets
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from IPython.utils.traitlets import Unicode, Bool
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# Needed to override preprocessor
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from .base import (Preprocessor)
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from IPython.nbconvert.utils import console
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#-----------------------------------------------------------------------------
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# Classes and functions
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#-----------------------------------------------------------------------------
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class SphinxPreprocessor(Preprocessor):
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"""
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Sphinx utility preprocessor.
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This preprocessor is used to set variables needed by the latex to build
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Sphinx stylized templates.
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"""
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interactive = Bool(False, config=True, help="""
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Allows you to define whether or not the Sphinx exporter will prompt
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you for input during the conversion process. If this is set to false,
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the author, version, release, date, and chapter_style traits should
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be set.
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""")
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author = Unicode("Unknown Author", config=True, help="Author name")
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version = Unicode("", config=True, help="""
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Version number
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You can leave this blank if you do not want to render a version number.
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Example: "1.0.0"
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""")
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release = Unicode("", config=True, help="""
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Release name
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You can leave this blank if you do not want to render a release name.
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Example: "Rough Draft"
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""")
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publish_date = Unicode("", config=True, help="""
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Publish date
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This is the date to render on the document as the publish date.
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Leave this blank to default to todays date.
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Example: "June 12, 1990"
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""")
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chapter_style = Unicode("Bjarne", config=True, help="""
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Sphinx chapter style
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This is the style to use for the chapter headers in the document.
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You may choose one of the following:
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"Bjarne" (default)
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"Lenny"
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"Glenn"
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"Conny"
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"Rejne"
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"Sonny" (used for international documents)
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""")
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output_style = Unicode("notebook", config=True, help="""
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Nbconvert Ipython
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notebook input/output formatting style.
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You may choose one of the following:
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"simple (recommended for long code segments)"
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"notebook" (default)
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""")
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center_output = Bool(False, config=True, help="""
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Optional attempt to center all output. If this is false, no additional
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formatting is applied.
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""")
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use_headers = Bool(True, config=True, help="""
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Whether not a header should be added to the document.
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""")
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#Allow the user to override the title of the notebook (useful for
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#fancy document titles that the file system doesn't support.)
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overridetitle = Unicode("", config=True, help="")
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def preprocess(self, nb, resources):
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"""
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Sphinx preprocessing to apply on each notebook.
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Parameters
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----------
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nb : NotebookNode
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Notebook being converted
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resources : dictionary
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Additional resources used in the conversion process. Allows
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preprocessors to pass variables into the Jinja engine.
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"""
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# import sphinx here, so that sphinx is not a dependency when it's not used
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import sphinx
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# TODO: Add versatile method of additional notebook metadata. Include
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# handling of multiple files. For now use a temporay namespace,
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# '_draft' to signify that this needs to change.
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if not isinstance(resources["sphinx"], dict):
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resources["sphinx"] = {}
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if self.interactive:
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# Prompt the user for additional meta data that doesn't exist currently
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# but would be usefull for Sphinx.
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resources["sphinx"]["author"] = self._prompt_author()
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resources["sphinx"]["version"] = self._prompt_version()
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resources["sphinx"]["release"] = self._prompt_release()
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resources["sphinx"]["date"] = self._prompt_date()
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# Prompt the user for the document style.
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resources["sphinx"]["chapterstyle"] = self._prompt_chapter_title_style()
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resources["sphinx"]["outputstyle"] = self._prompt_output_style()
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# Small options
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resources["sphinx"]["centeroutput"] = console.prompt_boolean("Do you want to center the output? (false)", False)
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resources["sphinx"]["header"] = console.prompt_boolean("Should a Sphinx document header be used? (true)", True)
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else:
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# Try to use the traitlets.
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resources["sphinx"]["author"] = self.author
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resources["sphinx"]["version"] = self.version
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resources["sphinx"]["release"] = self.release
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# Use todays date if none is provided.
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if self.publish_date:
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resources["sphinx"]["date"] = self.publish_date
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elif len(resources['metadata']['modified_date'].strip()) == 0:
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resources["sphinx"]["date"] = date.today().strftime("%B %-d, %Y")
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else:
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resources["sphinx"]["date"] = resources['metadata']['modified_date']
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# Sphinx traitlets.
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resources["sphinx"]["chapterstyle"] = self.chapter_style
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resources["sphinx"]["outputstyle"] = self.output_style
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resources["sphinx"]["centeroutput"] = self.center_output
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resources["sphinx"]["header"] = self.use_headers
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# Find and pass in the path to the Sphinx dependencies.
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resources["sphinx"]["texinputs"] = os.path.realpath(os.path.join(sphinx.package_dir, "texinputs"))
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# Generate Pygments definitions for Latex
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resources["sphinx"]["pygment_definitions"] = self._generate_pygments_latex_def()
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if not (self.overridetitle == None or len(self.overridetitle.strip()) == 0):
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resources['metadata']['name'] = self.overridetitle
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# End
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return nb, resources
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def _generate_pygments_latex_def(self):
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"""
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Generate the pygments latex definitions that allows pygments
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to work in latex.
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"""
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return LatexFormatter().get_style_defs()
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def _prompt_author(self):
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"""
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Prompt the user to input an Author name
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"""
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return console.input("Author name: ")
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def _prompt_version(self):
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"""
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prompt the user to enter a version number
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"""
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return console.input("Version (ie ""1.0.0""): ")
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def _prompt_release(self):
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"""
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Prompt the user to input a release name
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"""
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return console.input("Release Name (ie ""Rough draft""): ")
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def _prompt_date(self, resources):
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"""
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Prompt the user to enter a date
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"""
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if resources['metadata']['modified_date']:
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default_date = resources['metadata']['modified_date']
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else:
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default_date = date.today().strftime("%B %-d, %Y")
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user_date = console.input("Date (deafults to \"" + default_date + "\"): ")
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if len(user_date.strip()) == 0:
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user_date = default_date
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return user_date
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def _prompt_output_style(self):
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"""
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Prompts the user to pick an IPython output style.
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"""
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# Dictionary of available output styles
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styles = {1: "simple",
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2: "notebook"}
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#Append comments to the menu when displaying it to the user.
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comments = {1: "(recommended for long code segments)",
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2: "(default)"}
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return console.prompt_dictionary(styles, default_style=2, menu_comments=comments)
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def _prompt_chapter_title_style(self):
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"""
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Prompts the user to pick a Sphinx chapter style
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"""
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# Dictionary of available Sphinx styles
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styles = {1: "Bjarne",
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2: "Lenny",
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3: "Glenn",
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4: "Conny",
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5: "Rejne",
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6: "Sonny"}
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#Append comments to the menu when displaying it to the user.
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comments = {1: "(default)",
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6: "(for international documents)"}
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return console.prompt_dictionary(styles, menu_comments=comments)
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