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Example Google Style Python Docstrings
http://sphinxcontrib-napoleon.readthedocs.org/en/latest/example_google.html
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# -*- coding: utf-8 -*- | |
"""Example Google style docstrings. | |
This module demonstrates documentation as specified by the `Google Python | |
Style Guide`_. Docstrings may extend over multiple lines. Sections are created | |
with a section header and a colon followed by a block of indented text. | |
Example: | |
Examples can be given using either the ``Example`` or ``Examples`` | |
sections. Sections support any reStructuredText formatting, including | |
literal blocks:: | |
$ python example_google.py | |
Section breaks are created by resuming unindented text. Section breaks | |
are also implicitly created anytime a new section starts. | |
Attributes: | |
module_level_variable1 (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. | |
.. _Google Python Style Guide: | |
http://google.github.io/styleguide/pyguide.html | |
""" | |
module_level_variable1 = 12345 | |
module_level_variable2 = 98765 | |
"""int: Module level variable documented inline. | |
The docstring may span multiple lines. The type may optionally be specified | |
on the first line, separated by a colon. | |
""" | |
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 ``Args`` section. The name | |
of each parameter is required. The type and description of each parameter | |
is optional, but should be included if not obvious. | |
Parameter types -- if given -- should be specified according to | |
`PEP 484`_, though `PEP 484`_ conformance isn't required or enforced. | |
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. The "(type)" is optional. | |
Multiple paragraphs are supported in parameter | |
descriptions. | |
Args: | |
param1 (int): The first parameter. | |
param2 (Optional[str]): The second parameter. Defaults to None. | |
Second line of description should be indented. | |
*args: Variable length argument list. | |
**kwargs: Arbitrary keyword arguments. | |
Returns: | |
bool: True if successful, False otherwise. | |
The return type is optional and may be specified at the beginning of | |
the ``Returns`` section followed by a colon. | |
The ``Returns`` section may span multiple lines and paragraphs. | |
Following lines should be indented to match the first line. | |
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`. | |
.. _PEP 484: | |
https://www.python.org/dev/peps/pep-0484/ | |
""" | |
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. | |
Args: | |
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 ``Args`` section. | |
Args: | |
msg (str): Human readable string describing the exception. | |
code (Optional[int]): Error code. | |
Attributes: | |
msg (str): Human readable string describing the exception. | |
code (int): Exception error code. | |
""" | |
def __init__(self, msg, code): | |
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 may be documented here | |
in an ``Attributes`` section and follow the same formatting as a | |
function's ``Args`` section. Alternatively, attributes may be documented | |
inline with the attribute's declaration (see __init__ method below). | |
Properties created with the ``@property`` decorator should be documented | |
in the property's getter method. | |
Attribute and property types -- if given -- should be specified according | |
to `PEP 484`_, though `PEP 484`_ conformance isn't required or enforced. | |
Attributes: | |
attr1 (str): Description of `attr1`. | |
attr2 (Optional[int]): Description of `attr2`. | |
.. _PEP 484: | |
https://www.python.org/dev/peps/pep-0484/ | |
""" | |
def __init__(self, param1, param2, param3): | |
"""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 ``Args`` section. | |
Args: | |
param1 (str): Description of `param1`. | |
param2 (Optional[int]): Description of `param2`. Multiple | |
lines are supported. | |
param3 (List[str]): Description of `param3`. | |
""" | |
self.attr1 = param1 | |
self.attr2 = param2 | |
self.attr3 = param3 #: Doc comment *inline* with attribute | |
#: List[str]: Doc comment *before* attribute, with type specified | |
self.attr4 = ['attr4'] | |
self.attr5 = None | |
"""Optional[str]: Docstring *after* attribute, with type specified.""" | |
@property | |
def readonly_property(self): | |
"""str: Properties should be documented in their getter method.""" | |
return 'readonly_property' | |
@property | |
def readwrite_property(self): | |
"""List[str]: Properties with both a getter and setter should only | |
be documented in their getter method. | |
If the setter method contains notable behavior, it should be | |
mentioned here. | |
""" | |
return ['readwrite_property'] | |
@readwrite_property.setter | |
def readwrite_property(self, value): | |
value | |
def example_method(self, param1, param2): | |
"""Class methods are similar to regular functions. | |
Note: | |
Do not include the `self` parameter in the ``Args`` section. | |
Args: | |
param1: The first parameter. | |
param2: The second parameter. | |
Returns: | |
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 |
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# -*- 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 by | |
resuming unindented text. | |
Attributes | |
---------- | |
module_level_variable1 : 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_variable1 = 12345 | |
module_level_variable2 = 98765 | |
"""int: Module level variable documented inline. | |
The docstring may span multiple lines. The type may optionally be specified | |
on the first line, separated by a colon. | |
""" | |
def function_with_types_in_docstring(param1, param2): | |
"""Example function with types documented in the docstring. | |
`PEP 484`_ type annotations are supported. If attribute, parameter, and | |
return types are annotated according to `PEP 484`_, they do not need to be | |
included in the docstring: | |
Parameters | |
---------- | |
param1 : int | |
The first parameter. | |
param2 : str | |
The second parameter. | |
Returns | |
------- | |
bool | |
True if successful, False otherwise. | |
.. _PEP 484: | |
https://www.python.org/dev/peps/pep-0484/ | |
""" | |
def function_with_pep484_type_annotations(param1: int, param2: str) -> bool: | |
"""Example function with PEP 484 type annotations. | |
The return type must be duplicated in the docstring to comply | |
with the NumPy docstring style. | |
Parameters | |
---------- | |
param1 | |
The first parameter. | |
param2 | |
The second parameter. | |
Returns | |
------- | |
bool | |
True if successful, False otherwise. | |
""" | |
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 \*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. | |
The ": type" is optional. | |
Multiple paragraphs are supported in parameter | |
descriptions. | |
Parameters | |
---------- | |
param1 : int | |
The first parameter. | |
param2 : :obj:`str`, optional | |
The second parameter. | |
*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 : :obj:`int`, optional | |
Numeric error code. | |
Attributes | |
---------- | |
msg : str | |
Human readable string describing the exception. | |
code : int | |
Numeric error code. | |
""" | |
def __init__(self, msg, code): | |
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 may be documented here | |
in an ``Attributes`` section and follow the same formatting as a | |
function's ``Args`` section. Alternatively, attributes may be documented | |
inline with the attribute's declaration (see __init__ method below). | |
Properties created with the ``@property`` decorator should be documented | |
in the property's getter method. | |
Attributes | |
---------- | |
attr1 : str | |
Description of `attr1`. | |
attr2 : :obj:`int`, optional | |
Description of `attr2`. | |
""" | |
def __init__(self, param1, param2, param3): | |
"""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 : :obj:`list` of :obj:`str` | |
Description of `param2`. Multiple | |
lines are supported. | |
param3 : :obj:`int`, optional | |
Description of `param3`. | |
""" | |
self.attr1 = param1 | |
self.attr2 = param2 | |
self.attr3 = param3 #: Doc comment *inline* with attribute | |
#: list of str: Doc comment *before* attribute, with type specified | |
self.attr4 = ["attr4"] | |
self.attr5 = None | |
"""str: Docstring *after* attribute, with type specified.""" | |
@property | |
def readonly_property(self): | |
"""str: Properties should be documented in their getter method.""" | |
return "readonly_property" | |
@property | |
def readwrite_property(self): | |
""":obj:`list` of :obj:`str`: Properties with both a getter and setter | |
should only be documented in their getter method. | |
If the setter method contains notable behavior, it should be | |
mentioned here. | |
""" | |
return ["readwrite_property"] | |
@readwrite_property.setter | |
def readwrite_property(self, value): | |
value | |
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 not 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, if | |
``napoleon_include_special_with_doc`` is set to True. | |
This behavior can be enabled by changing the following setting in | |
Sphinx's conf.py:: | |
napoleon_include_special_with_doc = True | |
""" | |
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 |
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