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PROGRAM:

NAME


epydoc - generate API documentation from Python docstrings

SYNOPSIS


epydoc [action] [options] names...

DESCRIPTION


epydoc generates API documentation for Python modules and packages, based on their
docstrings. A lightweight markup language called epytext can be used to format
docstrings, and to add information about specific fields, such as parameters and instance
variables. Epydoc also understands docstrings written in ReStructuredText, Javadoc, and
plaintext. Currently, epydoc supports two basic output formats: HTML and LaTeX.

The HTML API documentation produced by epydoc consists of a set of HTML files, including:
an API documentation page for each class and module; a syntax-highlighted source code page
for each module; an identifier index page; a help page; and a frames-based table of
contents. When appropriate, epydoc will also generate index pages for bugs, defined
terms, and to-do items; a class hierarchy page; and a package hierarchy page.

The LaTeX API documentation produced by epydoc consists of a main LaTeX file, and a LaTeX
file for each module. If you use --dvi, --ps, or --pdf , then epydoc will invoke external
commands to convert the LaTeX output to the requested format. Note that the LaTeX files
containing the documentation for individual modules can be included as chapters or
sections of other LaTeX documents, using the LaTeX \include command. If you wish to
include individual classes in other LaTeX documents, then use the --separate-classes
option to produce a separate LaTeX file for each class.

epydoc can also be used to check the completeness of the API documentation. By default,
it checks that every public package, module, class, method, and function has a docstring
description. The --tests option can be used to specify additional tests to perform.

REPRODUCIBLE BUILD BEHAVIOR


Using the current date within Epydoc-generated documentation results in documentation that
is "unreproducible", meaning that the content of the files changes from build to build
even if the source tree does not. To make it easier to generate reproducible builds, this
version of Epydoc supports two features: the --no-include-build-time option and the
SOURCE_DATE_EPOCH environment variable.

The --no-include-build-time option can be used when you know up-front that you do not need
build timestamps in your generated documentation. The SOURCE_DATE_EPOCH environment
variable is intended for use by packaging systems, such as the Debian build process.
Packaging systems will set SOURCE_DATE_EPOCH to a sensible timestamp that is somehow
related to the state of the source tree, and that timestamp will be used by Eypdoc rather
than the current timestamp. Builds using SOURCE_DATE_EPOCH will thus be reproducible.

OPTIONS


Epydoc's options are divided into six categories: basic options, actions, generation
options, output options, graph options, and return value options.

BASIC OPTIONS

names...
The list of objects that should be documented. Objects can be specified using
Python dotted names (such as os.path), filenames (such as epydoc/epytext.py),
or directory names (such as epydoc/). Directory names specify packages, and
are expanded to include all sub-modules and sub-packages. If you wish to
exclude certain sub-modules or sub-packages, use the --exclude option
(described below).

--config file
A configuration file, specifying additional optionsand/ornames. This option
may be repeated.

--q, --quiet, --v, --verbose
Produce quite (or verbose) output. If used multiple times, this option
produces successively more quiet (or verbose) output.

--debug
Show full tracebacks for internal errors.

--simple-term
Do not try to use color or cursor control when displaying the progress bar,
warnings, or errors.

ACTIONS

--html Write HTML output. [default]

--latex Write LaTeX output.

--dvi Write DVI output.

--ps Write Postscript output.

--pdf Write Adobe Acrobat (pdf) output.

--check Perform completeness checks on the documentation.

--pickle Write the documentation to a pickle file.

GENERATION OPTIONS

--docformat format
Set the default value for __docformat__ to format. __docformat__ is a module
variable that specifies the markup language for the docstrings in a module.
Its value consists of the name of a markup language, optionally followed by a
language code (such as en for English). For a list of the markup languages
currently recognized by epydoc, run epydoc --help docformat.

--parse-only
Gather all information about the documented objects by parsing the relevant
Python source code; in particular, do not use introspection to gather
information about the documented objects. This option should be used when
epydoc is run on untrusted code; or on code that can not be introspected
because of missing dependencies, or because importing it would cause undesired
side-effects.

--introspect-only
Gather all information about the documented objects by introspection; in
particular, do not gather information by parsing the object's Python source
code.

--exclude PATTERN
Do not document any object whose name matches the given regular expression
pattern.

--exclude-introspect PATTERN
Do not use introspection to gather information about any object whose name
matches the given regular expression.

--exclude-parse PATTERN
Do not use Python source code parsing to gather information about any object
whose name matches the given regular expression.

--inheritance format
The format that should be used to display inherited methods, variables, and
properties in the generated "summary" tables. If format is "grouped," then
inherited objects are gathered into groups, based on which class that they are
inherited from. If format is "listed," then inherited objects are listed in a
short list at the end of the summary table. If format is "included," then
inherited objects are mixed in with non-inherited objects. The default format
for HTML output is "grouped."

--show-private, --no-private
These options control whether documentation is generated for private objects.
By default, the generated documentation includes private objects, and users can
choose whether to view private objects or not, by clicking on "show private"
and "hide private" links. But if you want to discourage users from directly
accessing private objects, then you may prefer not to generate documentation
for private objects.

--show-imports, --no-imports
These options control whether module imports are included in the generated
documentation. By default, imports are not included.

--show-sourcecode, --no-sourcecode
These options control whether or not epydoc should generate syntax-highlighted
pages containing the souce code of each module in the HTML output. By default,
the sourcecode pages are generated.

--include-log
Generate an HTML page epydoc-log.html containing all error and warning messages
that are generated by epydoc, and include it in the generated output.

--no-include-build-time
Do not print the build time in the page footer. This is useful if you are
trying to generate reproducible builds, where each build against a given
version of a source tree produces exactly the same artifacts.

OUTPUT OPTIONS

-o dir, --output dir
The output directory. If dir does not exist, then it will be created. If no
output directory is specified, then the action name (e.g., html or pdf). html

-c sheet, --css sheet
CSS stylesheet for HTML output files. If sheet is a file, then the stylesheet
is copied from that file; otherwise, sheet is taken to be the name of a
built-in stylesheet. For a list of the built-in stylesheets, run epydoc --help
css. If a CSS stylesheet is not specified, then the default stylesheet is
used.

-n name, --name name
The name of the project whose documentation is being generated.

-u url, --url url
The URL of the project's homepage.

--navlink html
HTML code for the homepage link on the HTML navigation bar. If this HTML code
contains any hyperlinks (<a href=...>), then it will be inserted verbatim. If
it does not contain any hyperlinks, and a project url is specified (with
--url), then a hyperlink to the specified URL is added to the link.

--help-file file
An alternate help file. file should contain the body of an HTML file --
navigation bars will be added to it.

--show-frames, --no-frames
These options control whether HMTL output will include a frames-based table of
contents page. By default, the frames-based table of contents is included.

--separate-classes
In the LaTeX output, describe each class in a separate section of the
documentation, instead of including them in the documentation for their
modules. This creates a separate LaTeX file for each class, so it can also be
useful if you want to include the documentation for one or two classes as
sections of your own LaTeX document.

GRAPH OPTIONS

--graph graphtype
Include graphs of type graphtype in the generated output. Graphs are generated
using the Graphviz dot executable. If this executable is not on the path, then
use --dotpath to specify its location. This option may be repeated to include
multiple graph types in the output. graphtype should be one of: all,
classtree, callgraph, or umlclasstree.

--dotpath path
The path to the Graphviz dot executable.

--graph-font font
The name of the font used to generate Graphviz graphs. (e.g., helvetica or
times).

--graph-font-size size
The size of the font used to generate Graphviz graphs, in points.

--pstat file
A pstat output file, to be used in generating call graphs.

RETURN VALUE OPTIONS

--fail-on-error
Return a non-zero exit status, indicating failure, if any errors are
encountered.

--fail-on-warning
Return a non-zero exit status, indicating failure, if any errors or warnings
are encountered (not including docstring warnings).

--fail-on-docstring-warning
Return a non-zero exit status, indicating failure, if any errors or warnings
are encountered (including docstring warnings).

HTML FILES


The HTML API documentation produced by epydoc consists of the following files:

OBJECT DOCUMENTATION PAGES

index.html
The standard entry point for the documentation. Normally, index.html is a copy
of the frames file (frames.html). But if the --no-frames option is used, then
index.html is a copy of the API documentation home page, which is normally the
documentation page for the top-level package or module (or the trees page if
there is no top-level package or module).

module-module.html
The API documentation for a module. module is the complete dotted name of the
module, such as sys or epydoc.epytext.

class-class.html
The API documentation for a class, exception, or type. class is the complete
dotted name of the class, such as epydoc.epytext.Token or array.ArrayType.

module-pysrc.html
A syntax-highlighted page containing the Python source code for module. This
page includes links back to the API documentation pages.

module-tree.html
The module hierarchy.

class-tree.html
The class hierarchy. This page is only generated if at least one class is
documented.

INDICES

identifier-index.html
An index of all documented identifiers. If the identifier index contains more
than 3,000 entries, then it will be split into separate pages for each letter,
named identifier-index-a.html, identifier-index-b.html, etc.

term-index.html
An index of all explicitly marked definitional terms. This page is only
generated if at least one definition term is marked in a formatted docstring.

bug-index.html
An index of all explicitly marked @bug fields. This page is only generated if
at least one @bug field is listed in a formatted docstring.

todo-index.html
An index of all explicitly marked @todo fields. This page is only generated if
at least one @todo field is listed in a formatted docstring.

changed-index.html
An index of all explicitly marked @changed fields. This page is only generated
if at least one @changed field is listed in a formatted docstring.

deprecated-index.html
An index of all explicitly marked @deprecated fields. This page is only
generated if at least one @deprecated field is listed in a formatted docstring.

since-index.html
An index of all explicitly marked @since fields. This page is only generated
if at least one @since field is listed in a formatted docstring.

FRAMES-BASED TABLE OF CONTENTS

frames.html
The main frames file. Two frames on the left side of the window contain a
table of contents, and the main frame on the right side of the window contains
API documentation pages.

toc.html
The top-level table of contents page. This page is displayed in the upper-left
frame of frames.html, and provides links to the toc-everything.html and
toc-module-module.html pages.

toc-everything.html
The table of contents for the entire project. This page is displayed in the
lower-left frame of frames.html, and provides links to every class, type,
exception, function, and variable defined by the project.

toc-module-module.html
The table of contents for a module. This page is displayed in the lower-left
frame of frames.html, and provides links to every class, type, exception,
function, and variable defined by the module. module is the complete dotted
name of the module, such as sys or epydoc.epytext.

OTHER PAGES

help.html
The help page for the project. This page explains how to use and navigate the
webpage produced by epydoc.

redirect.html
This page uses javascript to translate dotted names to their corresponding
URLs. For example, in epydoc's documentation, loading the page
<redirect.html#epydoc.apidoc.DottedName> will automatically redirect the
browser to <epydoc.apidoc-module.html#DottedName>.

epydoc.css
The CSS stylesheet used to display all HTML pages.

epydoc.js
A javascript file used to define javascript functions used by epydoc.

epydoc-log.html
A page containing a log of all warnings and errors that were generated by
epydoc, along with a table listing all of the options that were used.

LATEX FILES


The LaTeX API documentation produced by epydoc consists of the following files:

api.pdf
An Adobe Acrobat (pdf) file containing the complete API documentation. This
file is only generated if you use the --pdf option.

api.tex
The top-level LaTeX file. This file imports the other LaTeX files, to create a
single unified document.

api.dvi
A dvi file containing the complete API documentation. This file is only
generated if you use the --dvi option, the --ps option, or the --pdf option.

api.ps A postscript file containing the complete API documentation. This file is only
generated if you use the --ps option or the --pdf option.

module-module.tex
The API documentation for a module. module is the complete dotted name of the
module, such as sys or epydoc.epytext.

class-class.tex
The API documentation for a class, exception, or type. class is the complete
dotted name of the class, such as epydoc.epytext.Token or array.ArrayType.
These class documentation files are only created if the --separate-classes
option is used; otherwise, the documentation for each class is included in its
module's documentation file.

DIAGNOSTICS


EPYTEXT MARKUP WARNING MESSAGES
Epytext errors are caused by epytext docstrings that contain invalid markup. Whenever
an epytext error is detected, the docstring in question is treated as a plaintext
docstring. Epydoc can generate the following epytext errors:

Bad link target.
The target specified for an inline link contruction (L{...}) is not well-
formed. Link targets must be valid python identifiers.

Bad uri target.
The target specified for an inline uri contruction (U{...}) is not well-formed.
This typically occurs if inline markup is nested inside the URI target.

Fields must be at the top level.
The list of fields (@param, etc.) is contained by some other block structure
(such as a list or a section).

Fields must be the final elements.
The list of fields (@param, etc.) is not at the end of a docstring.

Headings must occur at top level.
The heading is contianed in some other block structure (such as a list).

Improper doctest block indentation.
The doctest block dedents past the indentation of its initial prompt line.

Improper heading indentation.
The heading for a section is not left-aligned with the paragraphs in the
section that contains it.

Improper paragraph indentation.
The paragraphs within a block are not left-aligned. This error is often
generated when plaintext docstrings are parsed using epytext.

Invalid escape.
An unknown escape sequence was used with the inline escape construction
(E{...}).

Lists must be indented.
An unindented line immediately following a paragraph starts with a list bullet.
Epydoc is not sure whether you meant to start a new list item, or meant for a
paragraph to include a word that looks like a bullet. If you intended the
former, then indent the list. If you intended the latter, then change the
word-wrapping of the paragraph, or escape the first character of the word that
looks like a bullet.

Unbalanced '{'.
The docstring contains unbalanced braces. Epytext requires that all braces
must be balanced. To include a single unbalanced brace, use the escape
sequences E{lb} (left brace) and E{rb} (right brace).

Unbalanced '}'.
The docstring contains unbalanced braces. Epytext requires that all braces
must be balanced. To include a single unbalanced brace, use the escape
sequences E{lb} (left brace) and E{rb} (right brace).

Unknown inline markup tag.
An unknown tag was used with the inline markup construction ( x{...} ).

Wrong underline character for heading.
The underline character used for this section heading does not indicate an
appopriate section level. The "=" character should be used to underline
sections; "-" for subsections; and "~" for subsubsections.

Possible mal-formatted field item.
Epytext detected a line that looks like a field item, but is not correctly
formatted. This typically occurs when the trailing colon (":") is not included
in the field tag.

Possible heading typo.
Epytext detected a pair of lines that looks like a heading, but the number of
underline characters does not match the number of characters in the heading.
The number of characters in these two lines must match exactly for them to be
considered a heading.

FIELD WARNINGS
Field warnings are caused by docstrings containing invalid fields. The contents of
the invalid field are generally ignored. Epydoc can generate the following field
warnings:

@param for unknown parameter param.
A @param field was used to specify the type for a parameter that is not
included in the function's signature. This is typically caused by a typo in
the parameter name.

tag did not expect an argument.
The field tag tag was used with an argument, but it does not take one.

tag expected an argument.
The field tag tag was used without an argument, but it requires one.

@type for unknown parameter param.
A @type field was used to specify the type for a parameter that is not included
in the function's signature. This is typically caused by a typo in the
parameter name.

@type for unknown variable var.
A @type field was used to specify the type for a variable, but no other
information is known about the variable. This is typically caused by a typo in
the variable name.

Unknown field tag tag.
A docstring contains a field with the unknown tag tag.

Redefinition of field.
Multiple field tags define the value of field in the same docstring, but field
can only take a single value.

EXAMPLES


epydoc -n epydoc -u http://epydoc.sf.net epydoc/
Generate the HTML API documentation for the epydoc package and all of its
submodules, and write the output to the html directory. In the headers and
footers, use epydoc as the project name, and http://epydoc.sf.net as the project
URL.

epydoc --pdf -n epydoc epydoc/
Generate the LaTeX API documentation for the epydoc package and all of its
submodules, and write the output to the latex directory.

EXIT STATUS


0 Successful program execution.

1 Usage error.

2 Epydoc generated an error or warning, and one of the options --fail-on-error,
--fail-on-warning, or --fail-on-docstring-warning was specified.

other Internal error (Python exception).

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