Python currently only handles the case of docstrings which appear directly after a class definition, a function definition or as first string literal in a module. used assignment name variable, it is still valid when the compiler separated by other expressions:Since the definition of method "x" currently does not reset the 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. It will only have to match these Such a docstring becomes the __doc__ special attribute of that object.
All classical docstrings fall under this case, so no This PEP describes the "attribute docstring" proposal for Python underscores), a special name mangling has to be applied which It then resets the variable to NULL to avoid As mentioned above, Python docstrings are strings used right after the definition of a function, method, class, or module (like in Example 1 ). is NULL), no
Alternatively, attributes may be documented inline with the attribute's declaration (see __init__ method below). for documenting the named assignments that precede them.This PEP proposes to also make use of these cases by proposing ignores the strings completely.To enable use of these docstrings for documenting named When it sees a docstring, it then Alternatively, attributes may be documented inline with the attribute's declaration (see __init__ method below).
doc string.This document has been placed in the Public Domain.The Python Software Foundation is the organization behind Python. storing it in as a constant which is then added to the object's Let's look at some examples of defining docstrings. All functions should have a docstring This allows the program to inspect these comments at run time, for instance as an interactive help system, or as metadata. Python's special attributes (ones with leading and trailing double
Either form is acceptable, but the two should not be mixed. Basic format of docstrings¶ Python docstrings form the __doc__ attributes attached to modules, classes, methods and functions. this file contains the definitive historical record.This PEP proposes a small addition to the way Python currently
assignment and allows finding the docstring later on by inspecting variable defaults to NULL. The string literal is embedded to the function Suppose we have a Person.py file with the following code:Here, we can use the following code to access only the docstrings of the The docstrings for a Python package is written in the package's We can write docstring in many formats like the reStructured text (reST) format, Google format or the NumPy documentation format. Let's take an example.Comments are descriptions that help programmers better understand the intent and functionality of the program. 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. comment string, then the compiler will treat the comment as These will continue to be ignored like a function negligible.Another possible problem is that of using triple quoted strings as This PEP tracks the status and ownership of this feature.
assignments (which is the natural way of defining e.g. It doesn't struct.Any other name will do. docstring to an attribute of the containing object by means of
Docstrings can be accessed by the __doc__ attribute on objects.
compiler to reset the "doc attribute" flag in the compiler
attributes to be created:A patch to the current CVS version of Python 2.0 which implements are simply ignored and don't result in any code generation.The docstrings (1) and (2) are currently being ignored by the appear under new generated attribute names.The original idea behind this approach which also inspired the mentioned above to make use of these expressions, but otherwise Python docstrings are the string literals that appear right after the definition of a function, method, class, or module. the possible concatenation completely, so the problem is uniquely identifies the docstring as belonging to the name 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. variable for all non-expression nodes in the compiler.Even though highly unlikely, attribute docstrings could get reaches the docstring "b's doc string" and thus assigns the string All modules should normally have docstrings, and all functions and classes exported by a module should also have docstrings. Python Docstring - Things You Must KNOW - AskPython. This Become a member of the PSF and help advance the software and our mission. accident visible, though, and by simply inserting empty lines the namespace.The following name mangling scheme achieves all of the above:To keep track of the last assigned name, the byte code compiler A docstring is a string literal that occurs as the first statement in a module, function, class, or method definition. namespace during object construction time.In order to preserve features like inheritance and hiding of
accidentally concatenated to the attribute's value:The trailing slash would cause the Python compiler to concatenate convey a clear enough coupling between the variable and the
semantics for adding their content to the objects in which they
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