# -*- coding: utf-8 -*-
-# Autogenerated by Sphinx on Mon Nov 15 18:21:10 2021
+# Autogenerated by Sphinx on Thu Jan 13 21:46:32 2022
topics = {'assert': 'The "assert" statement\n'
'**********************\n'
'\n'
'"super(B,\n'
' obj).m()" searches "obj.__class__.__mro__" for the '
'base class "A"\n'
- ' immediately preceding "B" and then invokes the '
+ ' immediately following "B" and then invokes the '
'descriptor with the\n'
' call: "A.__dict__[\'m\'].__get__(obj, '
'obj.__class__)".\n'
'can be\n'
'overridden by instances.\n'
'\n'
- 'Python methods (including "staticmethod()" and '
- '"classmethod()") are\n'
- 'implemented as non-data descriptors. Accordingly, '
- 'instances can\n'
- 'redefine and override methods. This allows individual '
- 'instances to\n'
- 'acquire behaviors that differ from other instances of '
- 'the same class.\n'
+ 'Python methods (including those decorated with '
+ '"@staticmethod" and\n'
+ '"@classmethod") are implemented as non-data '
+ 'descriptors. Accordingly,\n'
+ 'instances can redefine and override methods. This '
+ 'allows individual\n'
+ 'instances to acquire behaviors that differ from other '
+ 'instances of the\n'
+ 'same class.\n'
'\n'
'The "property()" function is implemented as a data '
'descriptor.\n'
'\n'
'*__slots__* allow us to explicitly declare data members '
'(like\n'
- 'properties) and deny the creation of *__dict__* and '
+ 'properties) and deny the creation of "__dict__" and '
'*__weakref__*\n'
'(unless explicitly declared in *__slots__* or available '
'in a parent.)\n'
'\n'
- 'The space saved over using *__dict__* can be '
+ 'The space saved over using "__dict__" can be '
'significant. Attribute\n'
'lookup speed can be significantly improved as well.\n'
'\n'
'*__slots__*\n'
' reserves space for the declared variables and '
'prevents the\n'
- ' automatic creation of *__dict__* and *__weakref__* '
+ ' automatic creation of "__dict__" and *__weakref__* '
'for each\n'
' instance.\n'
'\n'
'--------------------------\n'
'\n'
'* When inheriting from a class without *__slots__*, the '
- '*__dict__* and\n'
+ '"__dict__" and\n'
' *__weakref__* attribute of the instances will always '
'be accessible.\n'
'\n'
- '* Without a *__dict__* variable, instances cannot be '
+ '* Without a "__dict__" variable, instances cannot be '
'assigned new\n'
' variables not listed in the *__slots__* definition. '
'Attempts to\n'
'\n'
'* Without a *__weakref__* variable for each instance, '
'classes defining\n'
- ' *__slots__* do not support weak references to its '
- 'instances. If weak\n'
- ' reference support is needed, then add '
+ ' *__slots__* do not support "weak references" to its '
+ 'instances. If\n'
+ ' weak reference support is needed, then add '
'"\'__weakref__\'" to the\n'
' sequence of strings in the *__slots__* declaration.\n'
'\n'
'* *__slots__* are implemented at the class level by '
'creating\n'
- ' descriptors (Implementing Descriptors) for each '
- 'variable name. As a\n'
- ' result, class attributes cannot be used to set default '
- 'values for\n'
- ' instance variables defined by *__slots__*; otherwise, '
- 'the class\n'
- ' attribute would overwrite the descriptor assignment.\n'
+ ' descriptors for each variable name. As a result, '
+ 'class attributes\n'
+ ' cannot be used to set default values for instance '
+ 'variables defined\n'
+ ' by *__slots__*; otherwise, the class attribute would '
+ 'overwrite the\n'
+ ' descriptor assignment.\n'
'\n'
'* The action of a *__slots__* declaration is not limited '
'to the class\n'
' where it is defined. *__slots__* declared in parents '
'are available\n'
' in child classes. However, child subclasses will get a '
- '*__dict__*\n'
+ '"__dict__"\n'
' and *__weakref__* unless they also define *__slots__* '
'(which should\n'
' only contain names of any *additional* slots).\n'
' “variable-length” built-in types such as "int", '
'"bytes" and "tuple".\n'
'\n'
- '* Any non-string iterable may be assigned to '
- '*__slots__*. Mappings may\n'
- ' also be used; however, in the future, special meaning '
- 'may be\n'
- ' assigned to the values corresponding to each key.\n'
+ '* Any non-string *iterable* may be assigned to '
+ '*__slots__*.\n'
'\n'
- '* *__class__* assignment works only if both classes have '
+ '* If a "dictionary" is used to assign *__slots__*, the '
+ 'dictionary keys\n'
+ ' will be used as the slot names. The values of the '
+ 'dictionary can be\n'
+ ' used to provide per-attribute docstrings that will be '
+ 'recognised by\n'
+ ' "inspect.getdoc()" and displayed in the output of '
+ '"help()".\n'
+ '\n'
+ '* "__class__" assignment works only if both classes have '
'the same\n'
' *__slots__*.\n'
'\n'
'violations\n'
' raise "TypeError".\n'
'\n'
- '* If an iterator is used for *__slots__* then a '
- 'descriptor is created\n'
- ' for each of the iterator’s values. However, the '
- '*__slots__*\n'
+ '* If an *iterator* is used for *__slots__* then a '
+ '*descriptor* is\n'
+ ' created for each of the iterator’s values. However, '
+ 'the *__slots__*\n'
' attribute will be an empty iterator.\n',
'attribute-references': 'Attribute references\n'
'********************\n'
'debugger will pause execution just before the first line of the\n'
'module.\n'
'\n'
- 'The typical usage to break into the debugger from a running '
- 'program is\n'
- 'to insert\n'
+ 'The typical usage to break into the debugger is to insert:\n'
'\n'
' import pdb; pdb.set_trace()\n'
'\n'
- 'at the location you want to break into the debugger. You can '
- 'then\n'
- 'step through the code following this statement, and continue '
- 'running\n'
- 'without the debugger using the "continue" command.\n'
+ 'at the location you want to break into the debugger, and then '
+ 'run the\n'
+ 'program. You can then step through the code following this '
+ 'statement,\n'
+ 'and continue running without the debugger using the "continue"\n'
+ 'command.\n'
'\n'
'New in version 3.7: The built-in "breakpoint()", when called '
'with\n'
'\n'
'The following methods can be defined to implement '
'container objects.\n'
- 'Containers usually are sequences (such as lists or tuples) '
- 'or mappings\n'
- '(like dictionaries), but can represent other containers as '
- 'well. The\n'
- 'first set of methods is used either to emulate a sequence '
- 'or to\n'
- 'emulate a mapping; the difference is that for a sequence, '
- 'the\n'
- 'allowable keys should be the integers *k* for which "0 <= '
- 'k < N" where\n'
- '*N* is the length of the sequence, or slice objects, which '
- 'define a\n'
- 'range of items. It is also recommended that mappings '
- 'provide the\n'
- 'methods "keys()", "values()", "items()", "get()", '
- '"clear()",\n'
- '"setdefault()", "pop()", "popitem()", "copy()", and '
- '"update()"\n'
- 'behaving similar to those for Python’s standard dictionary '
+ 'Containers usually are *sequences* (such as "lists" or '
+ '"tuples") or\n'
+ '*mappings* (like "dictionaries"), but can represent other '
+ 'containers\n'
+ 'as well. The first set of methods is used either to '
+ 'emulate a\n'
+ 'sequence or to emulate a mapping; the difference is that '
+ 'for a\n'
+ 'sequence, the allowable keys should be the integers *k* '
+ 'for which "0\n'
+ '<= k < N" where *N* is the length of the sequence, or '
+ '"slice" objects,\n'
+ 'which define a range of items. It is also recommended '
+ 'that mappings\n'
+ 'provide the methods "keys()", "values()", "items()", '
+ '"get()",\n'
+ '"clear()", "setdefault()", "pop()", "popitem()", "copy()", '
+ 'and\n'
+ '"update()" behaving similar to those for Python’s '
+ 'standard\n'
+ '"dictionary" objects. The "collections.abc" module '
+ 'provides a\n'
+ '"MutableMapping" *abstract base class* to help create '
+ 'those methods\n'
+ 'from a base set of "__getitem__()", "__setitem__()", '
+ '"__delitem__()",\n'
+ 'and "keys()". Mutable sequences should provide methods '
+ '"append()",\n'
+ '"count()", "index()", "extend()", "insert()", "pop()", '
+ '"remove()",\n'
+ '"reverse()" and "sort()", like Python standard "list" '
'objects.\n'
- 'The "collections.abc" module provides a "MutableMapping" '
- 'abstract base\n'
- 'class to help create those methods from a base set of '
- '"__getitem__()",\n'
- '"__setitem__()", "__delitem__()", and "keys()". Mutable '
- 'sequences\n'
- 'should provide methods "append()", "count()", "index()", '
- '"extend()",\n'
- '"insert()", "pop()", "remove()", "reverse()" and "sort()", '
- 'like Python\n'
- 'standard list objects. Finally, sequence types should '
- 'implement\n'
- 'addition (meaning concatenation) and multiplication '
+ 'Finally, sequence types should implement addition '
'(meaning\n'
- 'repetition) by defining the methods "__add__()", '
- '"__radd__()",\n'
- '"__iadd__()", "__mul__()", "__rmul__()" and "__imul__()" '
- 'described\n'
- 'below; they should not define other numerical operators. '
+ 'concatenation) and multiplication (meaning repetition) by '
+ 'defining the\n'
+ 'methods "__add__()", "__radd__()", "__iadd__()", '
+ '"__mul__()",\n'
+ '"__rmul__()" and "__imul__()" described below; they should '
+ 'not define\n'
+ 'other numerical operators. It is recommended that both '
+ 'mappings and\n'
+ 'sequences implement the "__contains__()" method to allow '
+ 'efficient use\n'
+ 'of the "in" operator; for mappings, "in" should search the '
+ 'mapping’s\n'
+ 'keys; for sequences, it should search through the values. '
'It is\n'
- 'recommended that both mappings and sequences implement '
+ 'further recommended that both mappings and sequences '
+ 'implement the\n'
+ '"__iter__()" method to allow efficient iteration through '
'the\n'
- '"__contains__()" method to allow efficient use of the "in" '
- 'operator;\n'
- 'for mappings, "in" should search the mapping’s keys; for '
- 'sequences, it\n'
- 'should search through the values. It is further '
- 'recommended that both\n'
- 'mappings and sequences implement the "__iter__()" method '
- 'to allow\n'
- 'efficient iteration through the container; for mappings, '
- '"__iter__()"\n'
- 'should iterate through the object’s keys; for sequences, '
- 'it should\n'
- 'iterate through the values.\n'
+ 'container; for mappings, "__iter__()" should iterate '
+ 'through the\n'
+ 'object’s keys; for sequences, it should iterate through '
+ 'the values.\n'
'\n'
'object.__len__(self)\n'
'\n'
'object.__getitem__(self, key)\n'
'\n'
' Called to implement evaluation of "self[key]". For '
- 'sequence types,\n'
- ' the accepted keys should be integers and slice '
- 'objects. Note that\n'
- ' the special interpretation of negative indexes (if the '
- 'class wishes\n'
- ' to emulate a sequence type) is up to the '
- '"__getitem__()" method. If\n'
- ' *key* is of an inappropriate type, "TypeError" may be '
- 'raised; if of\n'
- ' a value outside the set of indexes for the sequence '
- '(after any\n'
- ' special interpretation of negative values), '
- '"IndexError" should be\n'
- ' raised. For mapping types, if *key* is missing (not in '
+ '*sequence*\n'
+ ' types, the accepted keys should be integers and slice '
+ 'objects.\n'
+ ' Note that the special interpretation of negative '
+ 'indexes (if the\n'
+ ' class wishes to emulate a *sequence* type) is up to '
'the\n'
- ' container), "KeyError" should be raised.\n'
+ ' "__getitem__()" method. If *key* is of an inappropriate '
+ 'type,\n'
+ ' "TypeError" may be raised; if of a value outside the '
+ 'set of indexes\n'
+ ' for the sequence (after any special interpretation of '
+ 'negative\n'
+ ' values), "IndexError" should be raised. For *mapping* '
+ 'types, if\n'
+ ' *key* is missing (not in the container), "KeyError" '
+ 'should be\n'
+ ' raised.\n'
'\n'
' Note:\n'
'\n'
'of the\n'
' sequence.\n'
'\n'
+ ' Note:\n'
+ '\n'
+ ' When subscripting a *class*, the special class '
+ 'method\n'
+ ' "__class_getitem__()" may be called instead of '
+ '"__getitem__()".\n'
+ ' See __class_getitem__ versus __getitem__ for more '
+ 'details.\n'
+ '\n'
'object.__setitem__(self, key, value)\n'
'\n'
' Called to implement assignment to "self[key]". Same '
'"super(B,\n'
' obj).m()" searches "obj.__class__.__mro__" for the base '
'class "A"\n'
- ' immediately preceding "B" and then invokes the descriptor '
+ ' immediately following "B" and then invokes the descriptor '
'with the\n'
' call: "A.__dict__[\'m\'].__get__(obj, obj.__class__)".\n'
'\n'
'be\n'
'overridden by instances.\n'
'\n'
- 'Python methods (including "staticmethod()" and '
- '"classmethod()") are\n'
- 'implemented as non-data descriptors. Accordingly, instances '
- 'can\n'
- 'redefine and override methods. This allows individual '
- 'instances to\n'
- 'acquire behaviors that differ from other instances of the '
+ 'Python methods (including those decorated with '
+ '"@staticmethod" and\n'
+ '"@classmethod") are implemented as non-data descriptors. '
+ 'Accordingly,\n'
+ 'instances can redefine and override methods. This allows '
+ 'individual\n'
+ 'instances to acquire behaviors that differ from other '
+ 'instances of the\n'
'same class.\n'
'\n'
'The "property()" function is implemented as a data '
'\n'
'*__slots__* allow us to explicitly declare data members '
'(like\n'
- 'properties) and deny the creation of *__dict__* and '
+ 'properties) and deny the creation of "__dict__" and '
'*__weakref__*\n'
'(unless explicitly declared in *__slots__* or available in a '
'parent.)\n'
'\n'
- 'The space saved over using *__dict__* can be significant. '
+ 'The space saved over using "__dict__" can be significant. '
'Attribute\n'
'lookup speed can be significantly improved as well.\n'
'\n'
'*__slots__*\n'
' reserves space for the declared variables and prevents '
'the\n'
- ' automatic creation of *__dict__* and *__weakref__* for '
+ ' automatic creation of "__dict__" and *__weakref__* for '
'each\n'
' instance.\n'
'\n'
'~~~~~~~~~~~~~~~~~~~~~~~~~~\n'
'\n'
'* When inheriting from a class without *__slots__*, the '
- '*__dict__* and\n'
+ '"__dict__" and\n'
' *__weakref__* attribute of the instances will always be '
'accessible.\n'
'\n'
- '* Without a *__dict__* variable, instances cannot be '
+ '* Without a "__dict__" variable, instances cannot be '
'assigned new\n'
' variables not listed in the *__slots__* definition. '
'Attempts to\n'
'\n'
'* Without a *__weakref__* variable for each instance, '
'classes defining\n'
- ' *__slots__* do not support weak references to its '
- 'instances. If weak\n'
- ' reference support is needed, then add "\'__weakref__\'" to '
- 'the\n'
+ ' *__slots__* do not support "weak references" to its '
+ 'instances. If\n'
+ ' weak reference support is needed, then add '
+ '"\'__weakref__\'" to the\n'
' sequence of strings in the *__slots__* declaration.\n'
'\n'
'* *__slots__* are implemented at the class level by '
'creating\n'
- ' descriptors (Implementing Descriptors) for each variable '
- 'name. As a\n'
- ' result, class attributes cannot be used to set default '
- 'values for\n'
- ' instance variables defined by *__slots__*; otherwise, the '
- 'class\n'
- ' attribute would overwrite the descriptor assignment.\n'
+ ' descriptors for each variable name. As a result, class '
+ 'attributes\n'
+ ' cannot be used to set default values for instance '
+ 'variables defined\n'
+ ' by *__slots__*; otherwise, the class attribute would '
+ 'overwrite the\n'
+ ' descriptor assignment.\n'
'\n'
'* The action of a *__slots__* declaration is not limited to '
'the class\n'
' where it is defined. *__slots__* declared in parents are '
'available\n'
' in child classes. However, child subclasses will get a '
- '*__dict__*\n'
+ '"__dict__"\n'
' and *__weakref__* unless they also define *__slots__* '
'(which should\n'
' only contain names of any *additional* slots).\n'
' “variable-length” built-in types such as "int", "bytes" '
'and "tuple".\n'
'\n'
- '* Any non-string iterable may be assigned to *__slots__*. '
- 'Mappings may\n'
- ' also be used; however, in the future, special meaning may '
- 'be\n'
- ' assigned to the values corresponding to each key.\n'
+ '* Any non-string *iterable* may be assigned to *__slots__*.\n'
+ '\n'
+ '* If a "dictionary" is used to assign *__slots__*, the '
+ 'dictionary keys\n'
+ ' will be used as the slot names. The values of the '
+ 'dictionary can be\n'
+ ' used to provide per-attribute docstrings that will be '
+ 'recognised by\n'
+ ' "inspect.getdoc()" and displayed in the output of '
+ '"help()".\n'
'\n'
- '* *__class__* assignment works only if both classes have the '
+ '* "__class__" assignment works only if both classes have the '
'same\n'
' *__slots__*.\n'
'\n'
'violations\n'
' raise "TypeError".\n'
'\n'
- '* If an iterator is used for *__slots__* then a descriptor '
- 'is created\n'
- ' for each of the iterator’s values. However, the '
+ '* If an *iterator* is used for *__slots__* then a '
+ '*descriptor* is\n'
+ ' created for each of the iterator’s values. However, the '
'*__slots__*\n'
' attribute will be an empty iterator.\n'
'\n'
'==========================\n'
'\n'
'Whenever a class inherits from another class, '
- '*__init_subclass__* is\n'
+ '"__init_subclass__()" is\n'
'called on that class. This way, it is possible to write '
'classes which\n'
'change the behavior of subclasses. This is closely related '
'come from\n'
'the class definition). The "__prepare__" method should be '
'implemented\n'
- 'as a "classmethod()". The namespace returned by '
- '"__prepare__" is\n'
- 'passed in to "__new__", but when the final class object is '
- 'created the\n'
+ 'as a "classmethod". The namespace returned by "__prepare__" '
+ 'is passed\n'
+ 'in to "__new__", but when the final class object is created '
+ 'the\n'
'namespace is copied into a new "dict".\n'
'\n'
'If the metaclass has no "__prepare__" attribute, then the '
'Emulating generic types\n'
'=======================\n'
'\n'
- 'One can implement the generic class syntax as specified by '
- '**PEP 484**\n'
- '(for example "List[int]") by defining a special method:\n'
+ 'When using *type annotations*, it is often useful to '
+ '*parameterize* a\n'
+ '*generic type* using Python’s square-brackets notation. For '
+ 'example,\n'
+ 'the annotation "list[int]" might be used to signify a "list" '
+ 'in which\n'
+ 'all the elements are of type "int".\n'
+ '\n'
+ 'See also:\n'
+ '\n'
+ ' **PEP 484** - Type Hints\n'
+ ' Introducing Python’s framework for type annotations\n'
+ '\n'
+ ' Generic Alias Types\n'
+ ' Documentation for objects representing parameterized '
+ 'generic\n'
+ ' classes\n'
+ '\n'
+ ' Generics, user-defined generics and "typing.Generic"\n'
+ ' Documentation on how to implement generic classes that '
+ 'can be\n'
+ ' parameterized at runtime and understood by static '
+ 'type-checkers.\n'
+ '\n'
+ 'A class can *generally* only be parameterized if it defines '
+ 'the\n'
+ 'special class method "__class_getitem__()".\n'
'\n'
'classmethod object.__class_getitem__(cls, key)\n'
'\n'
'generic class\n'
' by type arguments found in *key*.\n'
'\n'
- 'This method is looked up on the class object itself, and '
- 'when defined\n'
- 'in the class body, this method is implicitly a class '
- 'method. Note,\n'
- 'this mechanism is primarily reserved for use with static '
- 'type hints,\n'
- 'other usage is discouraged.\n'
+ ' When defined on a class, "__class_getitem__()" is '
+ 'automatically a\n'
+ ' class method. As such, there is no need for it to be '
+ 'decorated with\n'
+ ' "@classmethod" when it is defined.\n'
+ '\n'
+ '\n'
+ 'The purpose of *__class_getitem__*\n'
+ '----------------------------------\n'
+ '\n'
+ 'The purpose of "__class_getitem__()" is to allow runtime\n'
+ 'parameterization of standard-library generic classes in '
+ 'order to more\n'
+ 'easily apply *type hints* to these classes.\n'
+ '\n'
+ 'To implement custom generic classes that can be '
+ 'parameterized at\n'
+ 'runtime and understood by static type-checkers, users should '
+ 'either\n'
+ 'inherit from a standard library class that already '
+ 'implements\n'
+ '"__class_getitem__()", or inherit from "typing.Generic", '
+ 'which has its\n'
+ 'own implementation of "__class_getitem__()".\n'
+ '\n'
+ 'Custom implementations of "__class_getitem__()" on classes '
+ 'defined\n'
+ 'outside of the standard library may not be understood by '
+ 'third-party\n'
+ 'type-checkers such as mypy. Using "__class_getitem__()" on '
+ 'any class\n'
+ 'for purposes other than type hinting is discouraged.\n'
+ '\n'
+ '\n'
+ '*__class_getitem__* versus *__getitem__*\n'
+ '----------------------------------------\n'
+ '\n'
+ 'Usually, the subscription of an object using square brackets '
+ 'will call\n'
+ 'the "__getitem__()" instance method defined on the object’s '
+ 'class.\n'
+ 'However, if the object being subscribed is itself a class, '
+ 'the class\n'
+ 'method "__class_getitem__()" may be called instead.\n'
+ '"__class_getitem__()" should return a GenericAlias object if '
+ 'it is\n'
+ 'properly defined.\n'
+ '\n'
+ 'Presented with the *expression* "obj[x]", the Python '
+ 'interpreter\n'
+ 'follows something like the following process to decide '
+ 'whether\n'
+ '"__getitem__()" or "__class_getitem__()" should be called:\n'
+ '\n'
+ ' from inspect import isclass\n'
+ '\n'
+ ' def subscribe(obj, x):\n'
+ ' """Return the result of the expression `obj[x]`"""\n'
+ '\n'
+ ' class_of_obj = type(obj)\n'
+ '\n'
+ ' # If the class of obj defines __getitem__,\n'
+ ' # call class_of_obj.__getitem__(obj, x)\n'
+ " if hasattr(class_of_obj, '__getitem__'):\n"
+ ' return class_of_obj.__getitem__(obj, x)\n'
+ '\n'
+ ' # Else, if obj is a class and defines '
+ '__class_getitem__,\n'
+ ' # call obj.__class_getitem__(x)\n'
+ ' elif isclass(obj) and hasattr(obj, '
+ "'__class_getitem__'):\n"
+ ' return obj.__class_getitem__(x)\n'
+ '\n'
+ ' # Else, raise an exception\n'
+ ' else:\n'
+ ' raise TypeError(\n'
+ ' f"\'{class_of_obj.__name__}\' object is not '
+ 'subscriptable"\n'
+ ' )\n'
+ '\n'
+ 'In Python, all classes are themselves instances of other '
+ 'classes. The\n'
+ 'class of a class is known as that class’s *metaclass*, and '
+ 'most\n'
+ 'classes have the "type" class as their metaclass. "type" '
+ 'does not\n'
+ 'define "__getitem__()", meaning that expressions such as '
+ '"list[int]",\n'
+ '"dict[str, float]" and "tuple[str, bytes]" all result in\n'
+ '"__class_getitem__()" being called:\n'
+ '\n'
+ ' >>> # list has class "type" as its metaclass, like most '
+ 'classes:\n'
+ ' >>> type(list)\n'
+ " <class 'type'>\n"
+ ' >>> type(dict) == type(list) == type(tuple) == type(str) '
+ '== type(bytes)\n'
+ ' True\n'
+ ' >>> # "list[int]" calls "list.__class_getitem__(int)"\n'
+ ' >>> list[int]\n'
+ ' list[int]\n'
+ ' >>> # list.__class_getitem__ returns a GenericAlias '
+ 'object:\n'
+ ' >>> type(list[int])\n'
+ " <class 'types.GenericAlias'>\n"
+ '\n'
+ 'However, if a class has a custom metaclass that defines\n'
+ '"__getitem__()", subscribing the class may result in '
+ 'different\n'
+ 'behaviour. An example of this can be found in the "enum" '
+ 'module:\n'
+ '\n'
+ ' >>> from enum import Enum\n'
+ ' >>> class Menu(Enum):\n'
+ ' ... """A breakfast menu"""\n'
+ " ... SPAM = 'spam'\n"
+ " ... BACON = 'bacon'\n"
+ ' ...\n'
+ ' >>> # Enum classes have a custom metaclass:\n'
+ ' >>> type(Menu)\n'
+ " <class 'enum.EnumMeta'>\n"
+ ' >>> # EnumMeta defines __getitem__,\n'
+ ' >>> # so __class_getitem__ is not called,\n'
+ ' >>> # and the result is not a GenericAlias object:\n'
+ " >>> Menu['SPAM']\n"
+ " <Menu.SPAM: 'spam'>\n"
+ " >>> type(Menu['SPAM'])\n"
+ " <enum 'Menu'>\n"
'\n'
'See also:\n'
'\n'
- ' **PEP 560** - Core support for typing module and generic '
+ ' **PEP 560** - Core Support for typing module and generic '
'types\n'
+ ' Introducing "__class_getitem__()", and outlining when '
+ 'a\n'
+ ' subscription results in "__class_getitem__()" being '
+ 'called\n'
+ ' instead of "__getitem__()"\n'
'\n'
'\n'
'Emulating callable objects\n'
'\n'
'The following methods can be defined to implement container '
'objects.\n'
- 'Containers usually are sequences (such as lists or tuples) '
- 'or mappings\n'
- '(like dictionaries), but can represent other containers as '
- 'well. The\n'
- 'first set of methods is used either to emulate a sequence or '
- 'to\n'
- 'emulate a mapping; the difference is that for a sequence, '
- 'the\n'
- 'allowable keys should be the integers *k* for which "0 <= k '
- '< N" where\n'
- '*N* is the length of the sequence, or slice objects, which '
- 'define a\n'
- 'range of items. It is also recommended that mappings '
- 'provide the\n'
- 'methods "keys()", "values()", "items()", "get()", '
- '"clear()",\n'
- '"setdefault()", "pop()", "popitem()", "copy()", and '
- '"update()"\n'
- 'behaving similar to those for Python’s standard dictionary '
+ 'Containers usually are *sequences* (such as "lists" or '
+ '"tuples") or\n'
+ '*mappings* (like "dictionaries"), but can represent other '
+ 'containers\n'
+ 'as well. The first set of methods is used either to emulate '
+ 'a\n'
+ 'sequence or to emulate a mapping; the difference is that for '
+ 'a\n'
+ 'sequence, the allowable keys should be the integers *k* for '
+ 'which "0\n'
+ '<= k < N" where *N* is the length of the sequence, or '
+ '"slice" objects,\n'
+ 'which define a range of items. It is also recommended that '
+ 'mappings\n'
+ 'provide the methods "keys()", "values()", "items()", '
+ '"get()",\n'
+ '"clear()", "setdefault()", "pop()", "popitem()", "copy()", '
+ 'and\n'
+ '"update()" behaving similar to those for Python’s standard\n'
+ '"dictionary" objects. The "collections.abc" module provides '
+ 'a\n'
+ '"MutableMapping" *abstract base class* to help create those '
+ 'methods\n'
+ 'from a base set of "__getitem__()", "__setitem__()", '
+ '"__delitem__()",\n'
+ 'and "keys()". Mutable sequences should provide methods '
+ '"append()",\n'
+ '"count()", "index()", "extend()", "insert()", "pop()", '
+ '"remove()",\n'
+ '"reverse()" and "sort()", like Python standard "list" '
'objects.\n'
- 'The "collections.abc" module provides a "MutableMapping" '
- 'abstract base\n'
- 'class to help create those methods from a base set of '
- '"__getitem__()",\n'
- '"__setitem__()", "__delitem__()", and "keys()". Mutable '
- 'sequences\n'
- 'should provide methods "append()", "count()", "index()", '
- '"extend()",\n'
- '"insert()", "pop()", "remove()", "reverse()" and "sort()", '
- 'like Python\n'
- 'standard list objects. Finally, sequence types should '
- 'implement\n'
- 'addition (meaning concatenation) and multiplication '
- '(meaning\n'
- 'repetition) by defining the methods "__add__()", '
- '"__radd__()",\n'
- '"__iadd__()", "__mul__()", "__rmul__()" and "__imul__()" '
- 'described\n'
- 'below; they should not define other numerical operators. It '
- 'is\n'
- 'recommended that both mappings and sequences implement the\n'
- '"__contains__()" method to allow efficient use of the "in" '
- 'operator;\n'
- 'for mappings, "in" should search the mapping’s keys; for '
- 'sequences, it\n'
- 'should search through the values. It is further recommended '
- 'that both\n'
- 'mappings and sequences implement the "__iter__()" method to '
- 'allow\n'
- 'efficient iteration through the container; for mappings, '
- '"__iter__()"\n'
- 'should iterate through the object’s keys; for sequences, it '
- 'should\n'
- 'iterate through the values.\n'
+ 'Finally, sequence types should implement addition (meaning\n'
+ 'concatenation) and multiplication (meaning repetition) by '
+ 'defining the\n'
+ 'methods "__add__()", "__radd__()", "__iadd__()", '
+ '"__mul__()",\n'
+ '"__rmul__()" and "__imul__()" described below; they should '
+ 'not define\n'
+ 'other numerical operators. It is recommended that both '
+ 'mappings and\n'
+ 'sequences implement the "__contains__()" method to allow '
+ 'efficient use\n'
+ 'of the "in" operator; for mappings, "in" should search the '
+ 'mapping’s\n'
+ 'keys; for sequences, it should search through the values. '
+ 'It is\n'
+ 'further recommended that both mappings and sequences '
+ 'implement the\n'
+ '"__iter__()" method to allow efficient iteration through '
+ 'the\n'
+ 'container; for mappings, "__iter__()" should iterate through '
+ 'the\n'
+ 'object’s keys; for sequences, it should iterate through the '
+ 'values.\n'
'\n'
'object.__len__(self)\n'
'\n'
'object.__getitem__(self, key)\n'
'\n'
' Called to implement evaluation of "self[key]". For '
- 'sequence types,\n'
- ' the accepted keys should be integers and slice objects. '
- 'Note that\n'
- ' the special interpretation of negative indexes (if the '
- 'class wishes\n'
- ' to emulate a sequence type) is up to the "__getitem__()" '
- 'method. If\n'
- ' *key* is of an inappropriate type, "TypeError" may be '
- 'raised; if of\n'
- ' a value outside the set of indexes for the sequence '
- '(after any\n'
- ' special interpretation of negative values), "IndexError" '
+ '*sequence*\n'
+ ' types, the accepted keys should be integers and slice '
+ 'objects.\n'
+ ' Note that the special interpretation of negative indexes '
+ '(if the\n'
+ ' class wishes to emulate a *sequence* type) is up to the\n'
+ ' "__getitem__()" method. If *key* is of an inappropriate '
+ 'type,\n'
+ ' "TypeError" may be raised; if of a value outside the set '
+ 'of indexes\n'
+ ' for the sequence (after any special interpretation of '
+ 'negative\n'
+ ' values), "IndexError" should be raised. For *mapping* '
+ 'types, if\n'
+ ' *key* is missing (not in the container), "KeyError" '
'should be\n'
- ' raised. For mapping types, if *key* is missing (not in '
- 'the\n'
- ' container), "KeyError" should be raised.\n'
+ ' raised.\n'
'\n'
' Note:\n'
'\n'
'the\n'
' sequence.\n'
'\n'
+ ' Note:\n'
+ '\n'
+ ' When subscripting a *class*, the special class method\n'
+ ' "__class_getitem__()" may be called instead of '
+ '"__getitem__()".\n'
+ ' See __class_getitem__ versus __getitem__ for more '
+ 'details.\n'
+ '\n'
'object.__setitem__(self, key, value)\n'
'\n'
' Called to implement assignment to "self[key]". Same note '
' >>> from keyword import iskeyword\n'
'\n'
" >>> 'hello'.isidentifier(), iskeyword('hello')\n"
- ' True, False\n'
+ ' (True, False)\n'
" >>> 'def'.isidentifier(), iskeyword('def')\n"
- ' True, True\n'
+ ' (True, True)\n'
'\n'
'str.islower()\n'
'\n'
" >>> ' 1 2 3 '.split()\n"
" ['1', '2', '3']\n"
'\n'
- 'str.splitlines([keepends])\n'
+ 'str.splitlines(keepends=False)\n'
'\n'
' Return a list of the lines in the string, breaking at '
'line\n'
'for"\n'
' statement to execute the body of the function.\n'
'\n'
- ' Calling the asynchronous iterator’s "aiterator.__anext__()"\n'
- ' method will return an *awaitable* which when awaited will\n'
- ' execute until it provides a value using the "yield" '
- 'expression.\n'
- ' When the function executes an empty "return" statement or '
- 'falls\n'
- ' off the end, a "StopAsyncIteration" exception is raised and '
+ ' Calling the asynchronous iterator’s "aiterator.__anext__" '
+ 'method\n'
+ ' will return an *awaitable* which when awaited will execute '
+ 'until\n'
+ ' it provides a value using the "yield" expression. When the\n'
+ ' function executes an empty "return" statement or falls off '
'the\n'
+ ' end, a "StopAsyncIteration" exception is raised and the\n'
' asynchronous iterator will have reached the end of the set '
'of\n'
' values to be yielded.\n'
'"dict"\n'
'constructor.\n'
'\n'
- 'class dict(**kwarg)\n'
- 'class dict(mapping, **kwarg)\n'
- 'class dict(iterable, **kwarg)\n'
+ 'class dict(**kwargs)\n'
+ 'class dict(mapping, **kwargs)\n'
+ 'class dict(iterable, **kwargs)\n'
'\n'
' Return a new dictionary initialized from an optional '
'positional\n'
'\n'
' The arguments to the range constructor must be integers '
'(either\n'
- ' built-in "int" or any object that implements the "__index__"\n'
+ ' built-in "int" or any object that implements the '
+ '"__index__()"\n'
' special method). If the *step* argument is omitted, it '
'defaults to\n'
' "1". If the *start* argument is omitted, it defaults to "0". '
--- /dev/null
+.. bpo: 46070
+.. date: 2022-01-13-17-58-56
+.. nonce: q8IGth
+.. release date: 2022-01-13
+.. section: Core and Builtins
+
+:c:func:`Py_EndInterpreter` now explicitly untracks all objects currently
+tracked by the GC. Previously, if an object was used later by another
+interpreter, calling :c:func:`PyObject_GC_UnTrack` on the object crashed if
+the previous or the next object of the :c:type:`PyGC_Head` structure became
+a dangling pointer. Patch by Victor Stinner.
+
+..
+
+.. bpo: 46085
+.. date: 2021-12-30-00-23-41
+.. nonce: bDuJqu
+.. section: Core and Builtins
+
+Fix iterator cache mechanism of :class:`OrderedDict`.
+
+..
+
+.. bpo: 46110
+.. date: 2021-12-18-02-37-07
+.. nonce: B6hAfu
+.. section: Core and Builtins
+
+Add a maximum recursion check to the PEG parser to avoid stack overflow.
+Patch by Pablo Galindo
+
+..
+
+.. bpo: 46000
+.. date: 2021-12-07-11-42-44
+.. nonce: v_ru3k
+.. section: Core and Builtins
+
+Improve compatibility of the :mod:`curses` module with NetBSD curses.
+
+..
+
+.. bpo: 45614
+.. date: 2021-11-23-12-06-41
+.. nonce: fIekgI
+.. section: Core and Builtins
+
+Fix :mod:`traceback` display for exceptions with invalid module name.
+
+..
+
+.. bpo: 45806
+.. date: 2021-11-19-19-21-48
+.. nonce: DflDMe
+.. section: Core and Builtins
+
+Re-introduced fix that allows recovery from stack overflow without crashing
+the interpreter. The original fix as part of :issue:`42500` was reverted
+(see release notes for Python 3.9.4) since it introduced an ABI change in a
+bugfix release which is not allowed. The new fix doesn't introduce any ABI
+changes. Patch by Mark Shannon.
+
+..
+
+.. bpo: 45822
+.. date: 2021-11-16-19-41-04
+.. nonce: OT6ueS
+.. section: Core and Builtins
+
+Fixed a bug in the parser that was causing it to not respect :pep:`263`
+coding cookies when no flags are provided. Patch by Pablo Galindo
+
+..
+
+.. bpo: 45820
+.. date: 2021-11-16-19-00-27
+.. nonce: 2X6Psr
+.. section: Core and Builtins
+
+Fix a segfault when the parser fails without reading any input. Patch by
+Pablo Galindo
+
+..
+
+.. bpo: 42540
+.. date: 2021-11-15-12-08-27
+.. nonce: V2w107
+.. section: Core and Builtins
+
+Fix crash when :func:`os.fork` is called with an active non-default memory
+allocator.
+
+..
+
+.. bpo: 40479
+.. date: 2022-01-07-15-20-19
+.. nonce: EKfr3F
+.. section: Library
+
+Fix :mod:`hashlib` *usedforsecurity* option to work correctly with OpenSSL
+3.0.0 in FIPS mode.
+
+..
+
+.. bpo: 46070
+.. date: 2022-01-07-13-51-22
+.. nonce: -axLUW
+.. section: Library
+
+Fix possible segfault when importing the :mod:`asyncio` module from
+different sub-interpreters in parallel. Patch by Erlend E. Aasland.
+
+..
+
+.. bpo: 46278
+.. date: 2022-01-06-13-38-00
+.. nonce: wILA80
+.. section: Library
+
+Reflect ``context`` argument in ``AbstractEventLoop.call_*()`` methods. Loop
+implementations already support it.
+
+..
+
+.. bpo: 46239
+.. date: 2022-01-03-12-59-20
+.. nonce: ySVSEy
+.. section: Library
+
+Improve error message when importing :mod:`asyncio.windows_events` on
+non-Windows.
+
+..
+
+.. bpo: 20369
+.. date: 2021-12-17-12-06-40
+.. nonce: zzLuBz
+.. section: Library
+
+:func:`concurrent.futures.wait` no longer blocks forever when given
+duplicate Futures. Patch by Kumar Aditya.
+
+..
+
+.. bpo: 46105
+.. date: 2021-12-16-14-30-36
+.. nonce: pprB1K
+.. section: Library
+
+Honor spec when generating requirement specs with urls and extras
+(importlib_metadata 4.8.3).
+
+..
+
+.. bpo: 26952
+.. date: 2021-12-14-13-18-45
+.. nonce: hjhISq
+.. section: Library
+
+:mod:`argparse` raises :exc:`ValueError` with clear message when trying to
+render usage for an empty mutually-exclusive group. Previously it raised a
+cryptic :exc:`IndexError`.
+
+..
+
+.. bpo: 27718
+.. date: 2021-12-11-22-51-30
+.. nonce: MgQiGl
+.. section: Library
+
+Fix help for the :mod:`signal` module. Some functions (e.g. ``signal()`` and
+``getsignal()``) were omitted.
+
+..
+
+.. bpo: 46032
+.. date: 2021-12-11-15-45-07
+.. nonce: HmciLT
+.. section: Library
+
+The ``registry()`` method of :func:`functools.singledispatch` functions
+checks now the first argument or the first parameter annotation and raises a
+TypeError if it is not supported. Previously unsupported "types" were
+ignored (e.g. ``typing.List[int]``) or caused an error at calling time (e.g.
+``list[int]``).
+
+..
+
+.. bpo: 46018
+.. date: 2021-12-09-00-44-42
+.. nonce: hkTI7v
+.. section: Library
+
+Ensure that :func:`math.expm1` does not raise on underflow.
+
+..
+
+.. bpo: 27946
+.. date: 2021-12-04-20-08-42
+.. nonce: -Vuarf
+.. section: Library
+
+Fix possible crash when getting an attribute of
+class:`xml.etree.ElementTree.Element` simultaneously with replacing the
+``attrib`` dict.
+
+..
+
+.. bpo: 13236
+.. date: 2021-11-30-13-52-02
+.. nonce: FmJIkO
+.. section: Library
+
+:class:`unittest.TextTestResult` and :class:`unittest.TextTestRunner` flush
+now the output stream more often.
+
+..
+
+.. bpo: 37658
+.. date: 2021-11-28-15-30-34
+.. nonce: 8Hno7d
+.. section: Library
+
+Fix issue when on certain conditions ``asyncio.wait_for()`` may allow a
+coroutine to complete successfully, but fail to return the result,
+potentially causing memory leaks or other issues.
+
+..
+
+.. bpo: 45831
+.. date: 2021-11-17-19-25-37
+.. nonce: 9-TojK
+.. section: Library
+
+:mod:`faulthandler` can now write ASCII-only strings (like filenames and
+function names) with a single write() syscall when dumping a traceback. It
+reduces the risk of getting an unreadable dump when two threads or two
+processes dump a traceback to the same file (like stderr) at the same time.
+Patch by Victor Stinner.
+
+..
+
+.. bpo: 41735
+.. date: 2021-11-17-11-38-30
+.. nonce: 2feh9v
+.. section: Library
+
+Fix thread lock in ``zlib.Decompress.flush()`` method before
+``PyObject_GetBuffer``.
+
+..
+
+.. bpo: 45664
+.. date: 2021-10-28-23-40-54
+.. nonce: 7dqtxQ
+.. section: Library
+
+Fix :func:`types.resolve_bases` and :func:`types.new_class` for
+:class:`types.GenericAlias` instance as a base.
+
+..
+
+.. bpo: 45663
+.. date: 2021-10-28-23-11-59
+.. nonce: J90N5R
+.. section: Library
+
+Fix :func:`dataclasses.is_dataclass` for dataclasses which are subclasses of
+:class:`types.GenericAlias`.
+
+..
+
+.. bpo: 45662
+.. date: 2021-10-28-22-58-14
+.. nonce: sJd7Ir
+.. section: Library
+
+Fix the repr of :data:`dataclasses.InitVar` with a type alias to the
+built-in class, e.g. ``InitVar[list[int]]``.
+
+..
+
+.. bpo: 43498
+.. date: 2021-04-20-14-14-16
+.. nonce: L_Hq-8
+.. section: Library
+
+Avoid a possible *"RuntimeError: dictionary changed size during iteration"*
+when adjusting the process count of :class:`ProcessPoolExecutor`.
+
+..
+
+.. bpo: 29620
+.. date: 2018-08-21-16-20-33
+.. nonce: xxx666
+.. section: Library
+
+:func:`~unittest.TestCase.assertWarns` no longer raises a
+``RuntimeException`` when accessing a module's ``__warningregistry__``
+causes importation of a new module, or when a new module is imported in
+another thread. Patch by Kernc.
+
+..
+
+.. bpo: 19737
+.. date: 2021-11-28-22-43-21
+.. nonce: cOOubB
+.. section: Documentation
+
+Update the documentation for the :func:`globals` function.
+
+..
+
+.. bpo: 45840
+.. date: 2021-11-19-02-02-32
+.. nonce: A51B2S
+.. section: Documentation
+
+Improve cross-references in the documentation for the data model.
+
+..
+
+.. bpo: 45788
+.. date: 2021-11-18-00-07-40
+.. nonce: qibUoB
+.. section: Documentation
+
+Link doc for sys.prefix to sysconfig doc on installation paths.
+
+..
+
+.. bpo: 25381
+.. date: 2021-06-21-17-51-51
+.. nonce: 7Kn-_H
+.. section: Documentation
+
+In the extending chapter of the extending doc, update a paragraph about the
+global variables containing exception information.
+
+..
+
+.. bpo: 43905
+.. date: 2021-05-24-05-00-12
+.. nonce: tBIndE
+.. section: Documentation
+
+Expanded :func:`~dataclasses.astuple` and :func:`~dataclasses.asdict` docs,
+warning about deepcopy being applied and providing a workaround.
+
+..
+
+.. bpo: 41028
+.. date: 2020-06-18-23-37-03
+.. nonce: vM8bC8
+.. section: Documentation
+
+Language and version switchers, previously maintained in every cpython
+branches, are now handled by docsbuild-script.
+
+..
+
+.. bpo: 46205
+.. date: 2022-01-07-14-06-12
+.. nonce: dnc2OC
+.. section: Tests
+
+Fix hang in runtest_mp due to race condition
+
+..
+
+.. bpo: 46263
+.. date: 2022-01-06-15-45-34
+.. nonce: bJXek6
+.. section: Tests
+
+Fix test_capi on FreeBSD 14-dev: instruct jemalloc to not fill freed memory
+with junk byte.
+
+..
+
+.. bpo: 46150
+.. date: 2021-12-23-13-42-15
+.. nonce: RhtADs
+.. section: Tests
+
+Now ``fakename`` in ``test_pathlib.PosixPathTest.test_expanduser`` is
+checked to be non-existent.
+
+..
+
+.. bpo: 46129
+.. date: 2021-12-19-12-20-57
+.. nonce: I3MunH
+.. section: Tests
+
+Rewrite ``asyncio.locks`` tests with
+:class:`unittest.IsolatedAsyncioTestCase` usage.
+
+..
+
+.. bpo: 23819
+.. date: 2021-12-19-08-44-32
+.. nonce: 9ueiII
+.. section: Tests
+
+Fixed :mod:`asyncio` tests in python optimized mode. Patch by Kumar Aditya.
+
+..
+
+.. bpo: 46114
+.. date: 2021-12-17-14-46-19
+.. nonce: 9iyZ_9
+.. section: Tests
+
+Fix test case for OpenSSL 3.0.1 version. OpenSSL 3.0 uses ``0xMNN00PP0L``.
+
+..
+
+.. bpo: 19460
+.. date: 2021-11-28-15-25-02
+.. nonce: lr0aWs
+.. section: Tests
+
+Add new Test for :class:`email.mime.nonmultipart.MIMENonMultipart`.
+
+..
+
+.. bpo: 45835
+.. date: 2021-11-17-14-28-08
+.. nonce: Mgyhjx
+.. section: Tests
+
+Fix race condition in test_queue tests with multiple "feeder" threads.
+
+..
+
+.. bpo: 46263
+.. date: 2022-01-05-02-58-10
+.. nonce: xiv8NU
+.. section: Build
+
+``configure`` no longer sets ``MULTIARCH`` on FreeBSD platforms.
+
+..
+
+.. bpo: 46106
+.. date: 2021-12-20-07-10-41
+.. nonce: 5qcv3L
+.. section: Build
+
+Updated OpenSSL to 1.1.1m in Windows builds, macOS installer builds, and CI.
+Patch by Kumar Aditya.
+
+..
+
+.. bpo: 44035
+.. date: 2021-12-06-09-31-27
+.. nonce: BiO4XC
+.. section: Build
+
+CI now verifies that autoconf files have been regenerated with a current and
+unpatched autoconf package.
+
+..
+
+.. bpo: 33393
+.. date: 2021-11-25-20-26-06
+.. nonce: 24YNtM
+.. section: Build
+
+Update ``config.guess`` to 2021-06-03 and ``config.sub`` to 2021-08-14.
+``Makefile`` now has an ``update-config`` target to make updating more
+convenient.
+
+..
+
+.. bpo: 45866
+.. date: 2021-11-25-13-53-36
+.. nonce: ZH1W8N
+.. section: Build
+
+``make regen-all`` now produces the same output when run from a directory
+other than the source tree: when building Python out of the source tree.
+pegen now strips directory of the "generated by pygen from <FILENAME>"
+header Patch by Victor Stinner.
+
+..
+
+.. bpo: 41498
+.. date: 2021-11-25-09-15-04
+.. nonce: qAk5eo
+.. section: Build
+
+Python now compiles on platforms without ``sigset_t``. Several functions in
+:mod:`signal` are not available when ``sigset_t`` is missing.
+
+Based on patch by Roman Yurchak for pyodide.
+
+..
+
+.. bpo: 45881
+.. date: 2021-11-24-17-14-06
+.. nonce: GTXXLk
+.. section: Build
+
+``setup.py`` now uses ``CC`` from environment first to discover multiarch
+and cross compile paths.
+
+..
+
+.. bpo: 45901
+.. date: 2021-11-26-18-17-41
+.. nonce: c5IBqM
+.. section: Windows
+
+When installed through the Microsoft Store and set as the default app for
+:file:`*.py` files, command line arguments will now be passed to Python when
+invoking a script without explicitly launching Python (that is, ``script.py
+args`` rather than ``python script.py args``).
+
+..
+
+.. bpo: 40477
+.. date: 2022-01-02-21-56-53
+.. nonce: W3nnM6
+.. section: macOS
+
+The Python Launcher app for macOS now properly launches scripts and, if
+necessary, the Terminal app when running on recent macOS releases.
+
+..
+
+.. bpo: 45732
+.. date: 2021-12-05-23-52-03
+.. nonce: -BWrnh
+.. section: macOS
+
+Update python.org macOS installer to use Tcl/Tk 8.6.12.
+
+..
+
+.. bpo: 45838
+.. date: 2021-11-18-11-20-21
+.. nonce: TH6mwc
+.. section: Tools/Demos
+
+Fix line number calculation when debugging Python with GDB.
+
+..
+
+.. bpo: 39026
+.. date: 2021-11-09-15-42-11
+.. nonce: sUnYWn
+.. section: C API
+
+Fix Python.h to build C extensions with Xcode: remove a relative include
+from ``Include/cpython/pystate.h``.