Example NumPy Style Python DocstringsΒΆ
Download: example_numpy.py
# -*- coding: utf-8 -*-
"""Example NumPy style docstrings.
This module demonstrates documentation as specified by the `NumPy
Documentation HOWTO`_. Docstrings may extend over multiple lines. Sections
are created with a section header followed by an underline of equal length.
Example
-------
Examples can be given using either the ``Example`` or ``Examples``
sections. Sections support any reStructuredText formatting, including
literal blocks::
$ python example_numpy.py
Section breaks are created with two blank lines. Section breaks are also
implicitly created anytime a new section starts. Section bodies *may* be
indented:
Notes
-----
This is an example of an indented section. It's like any other section,
but the body is indented to help it stand out from surrounding text.
If a section is indented, then a section break is created simply by
resuming unindented text.
Attributes
----------
module_level_variable : int
Module level variables may be documented in either the ``Attributes``
section of the module docstring, or in an inline docstring immediately
following the variable.
Either form is acceptable, but the two should not be mixed. Choose
one convention to document module level variables and be consistent
with it.
.. _NumPy Documentation HOWTO:
https://github.com/numpy/numpy/blob/master/doc/HOWTO_DOCUMENT.rst.txt
"""
module_level_variable = 12345
def module_level_function(param1, param2=None, *args, **kwargs):
"""This is an example of a module level function.
Function parameters should be documented in the ``Parameters`` section.
The name of each parameter is required. The type and description of each
parameter is optional, but should be included if not obvious.
If the parameter itself is optional, it should be noted by adding
", optional" to the type. If \*args or \*\*kwargs are accepted, they
should be listed as \*args and \*\*kwargs.
The format for a parameter is::
name : type
description
The description may span multiple lines. Following lines
should be indented to match the first line of the description.
Multiple paragraphs are supported in parameter
descriptions.
Parameters
----------
param1 : int
The first parameter.
param2 : str, optional
The second parameter, defaults to None.
*args
Variable length argument list.
**kwargs
Arbitrary keyword arguments.
Returns
-------
bool
True if successful, False otherwise.
The return type is not optional. The ``Returns`` section may span
multiple lines and paragraphs. Following lines should be indented to
match the first line of the description.
The ``Returns`` section supports any reStructuredText formatting,
including literal blocks::
{
'param1': param1,
'param2': param2
}
Raises
------
AttributeError
The ``Raises`` section is a list of all exceptions
that are relevant to the interface.
ValueError
If `param2` is equal to `param1`.
"""
if param1 == param2:
raise ValueError('param1 may not be equal to param2')
return True
def example_generator(n):
"""Generators have a ``Yields`` section instead of a ``Returns`` section.
Parameters
----------
n : int
The upper limit of the range to generate, from 0 to `n` - 1
Yields
------
int
The next number in the range of 0 to `n` - 1
Examples
--------
Examples should be written in doctest format, and should illustrate how
to use the function.
>>> print [i for i in example_generator(4)]
[0, 1, 2, 3]
"""
for i in range(n):
yield i
class ExampleError(Exception):
"""Exceptions are documented in the same way as classes.
The __init__ method may be documented in either the class level
docstring, or as a docstring on the __init__ method itself.
Either form is acceptable, but the two should not be mixed. Choose one
convention to document the __init__ method and be consistent with it.
Note
----
Do not include the `self` parameter in the ``Parameters`` section.
Parameters
----------
msg : str
Human readable string describing the exception.
code : int, optional
Error code, defaults to 2.
Attributes
----------
msg : str
Human readable string describing the exception.
code : int
Exception error code.
"""
def __init__(self, msg, code=2):
self.msg = msg
self.code = code
class ExampleClass(object):
"""The summary line for a class docstring should fit on one line.
If the class has public attributes, they should be documented here
in an ``Attributes`` section and follow the same formatting as a
function's ``Parameters`` section.
Attributes
----------
attr1 : str
Description of `attr1`.
attr2 : list of str
Description of `attr2`.
attr3 : int
Description of `attr3`.
"""
def __init__(self, param1, param2, param3=0):
"""Example of docstring on the __init__ method.
The __init__ method may be documented in either the class level
docstring, or as a docstring on the __init__ method itself.
Either form is acceptable, but the two should not be mixed. Choose one
convention to document the __init__ method and be consistent with it.
Note
----
Do not include the `self` parameter in the ``Parameters`` section.
Parameters
----------
param1 : str
Description of `param1`.
param2 : list of str
Description of `param2`. Multiple
lines are supported.
param3 : int, optional
Description of `param3`, defaults to 0.
"""
self.attr1 = param1
self.attr2 = param2
self.attr3 = param3
def example_method(self, param1, param2):
"""Class methods are similar to regular functions.
Note
----
Do not include the `self` parameter in the ``Parameters`` section.
Parameters
----------
param1
The first parameter.
param2
The second parameter.
Returns
-------
bool
True if successful, False otherwise.
"""
return True
def __special__(self):
"""By default special members with docstrings are included.
Special members are any methods or attributes that start with and
end with a double underscore. Any special member with a docstring
will be included in the output.
This behavior can be disabled by changing the following setting in
Sphinx's conf.py::
napoleon_include_special_with_doc = False
"""
pass
def __special_without_docstring__(self):
pass
def _private(self):
"""By default private members are not included.
Private members are any methods or attributes that start with an
underscore and are *not* special. By default they are not included
in the output.
This behavior can be changed such that private members *are* included
by changing the following setting in Sphinx's conf.py::
napoleon_include_private_with_doc = True
"""
pass
def _private_without_docstring(self):
pass