mirror of https://github.com/python/cpython
Python 3.10.0a6
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This commit is contained in:
Pablo Galindo
commit
4b7f4ff168
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@ -365,4 +365,3 @@ whatsnew/changelog,,::,default::DeprecationWarning
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library/importlib.metadata,,:main,"EntryPoint(name='wheel', value='wheel.cli:main', group='console_scripts')"
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library/importlib.metadata,,`,loading the metadata for packages for the indicated ``context``.
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library/re,,`,"`"
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library/dis,,:TOS1,TOS[x:TOS1 - 1 - y]
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Can't render this file because it contains an unexpected character in line 344 and column 55.
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@ -20,10 +20,10 @@
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#define PY_MINOR_VERSION 10
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#define PY_MICRO_VERSION 0
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#define PY_RELEASE_LEVEL PY_RELEASE_LEVEL_ALPHA
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#define PY_RELEASE_SERIAL 5
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#define PY_RELEASE_SERIAL 6
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/* Version as a string */
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#define PY_VERSION "3.10.0a5+"
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#define PY_VERSION "3.10.0a6"
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/*--end constants--*/
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/* Version as a single 4-byte hex number, e.g. 0x010502B2 == 1.5.2b2.
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@ -1,5 +1,5 @@
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# -*- coding: utf-8 -*-
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# Autogenerated by Sphinx on Tue Feb 2 20:44:10 2021
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# Autogenerated by Sphinx on Mon Mar 1 16:48:51 2021
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topics = {'assert': 'The "assert" statement\n'
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'**********************\n'
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'\n'
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@ -2183,6 +2183,7 @@ topics = {'assert': 'The "assert" statement\n'
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' | for_stmt\n'
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' | try_stmt\n'
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' | with_stmt\n'
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' | match_stmt\n'
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' | funcdef\n'
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' | classdef\n'
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' | async_with_stmt\n'
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@ -2681,6 +2682,737 @@ topics = {'assert': 'The "assert" statement\n'
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' statement.\n'
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'\n'
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'\n'
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'The "match" statement\n'
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'=====================\n'
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'\n'
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'New in version 3.10.\n'
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'\n'
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'The match statement is used for pattern matching. Syntax:\n'
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'\n'
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' match_stmt ::= \'match\' subject_expr ":" NEWLINE INDENT '
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'case_block+ DEDENT\n'
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' subject_expr ::= star_named_expression "," '
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'star_named_expressions?\n'
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' | named_expression\n'
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" case_block ::= 'case' patterns [guard] ':' block\n"
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'\n'
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'Note:\n'
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'\n'
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' This section uses single quotes to denote soft keywords.\n'
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'\n'
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'Pattern matching takes a pattern as input (following "case") and '
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'a\n'
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'subject value (following "match"). The pattern (which may '
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'contain\n'
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'subpatterns) is matched against the subject value. The outcomes '
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'are:\n'
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'\n'
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'* A match success or failure (also termed a pattern success or\n'
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' failure).\n'
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'\n'
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'* Possible binding of matched values to a name. The '
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'prerequisites for\n'
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' this are further discussed below.\n'
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'\n'
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'The "match" and "case" keywords are soft keywords.\n'
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'\n'
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'See also:\n'
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'\n'
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' * **PEP 634** – Structural Pattern Matching: Specification\n'
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'\n'
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' * **PEP 636** – Structural Pattern Matching: Tutorial\n'
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'\n'
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'\n'
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'Overview\n'
|
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'--------\n'
|
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'\n'
|
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'Here’s an overview of the logical flow of a match statement:\n'
|
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'\n'
|
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'1. The subject expression "subject_expr" is evaluated and a '
|
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'resulting\n'
|
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' subject value obtained. If the subject expression contains a '
|
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'comma,\n'
|
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' a tuple is constructed using the standard rules.\n'
|
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'\n'
|
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'2. Each pattern in a "case_block" is attempted to match with '
|
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'the\n'
|
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' subject value. The specific rules for success or failure are\n'
|
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' described below. The match attempt can also bind some or all '
|
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'of the\n'
|
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' standalone names within the pattern. The precise pattern '
|
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'binding\n'
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' rules vary per pattern type and are specified below. **Name\n'
|
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' bindings made during a successful pattern match outlive the\n'
|
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' executed block and can be used after the match statement**.\n'
|
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'\n'
|
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' Note:\n'
|
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'\n'
|
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' During failed pattern matches, some subpatterns may '
|
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'succeed.\n'
|
||||
' Do not rely on bindings being made for a failed match.\n'
|
||||
' Conversely, do not rely on variables remaining unchanged '
|
||||
'after\n'
|
||||
' a failed match. The exact behavior is dependent on\n'
|
||||
' implementation and may vary. This is an intentional '
|
||||
'decision\n'
|
||||
' made to allow different implementations to add '
|
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'optimizations.\n'
|
||||
'\n'
|
||||
'3. If the pattern succeeds, the corresponding guard (if present) '
|
||||
'is\n'
|
||||
' evaluated. In this case all name bindings are guaranteed to '
|
||||
'have\n'
|
||||
' happened.\n'
|
||||
'\n'
|
||||
' * If the guard evaluates as truthy or missing, the "block" '
|
||||
'inside\n'
|
||||
' "case_block" is executed.\n'
|
||||
'\n'
|
||||
' * Otherwise, the next "case_block" is attempted as described '
|
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'above.\n'
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'\n'
|
||||
' * If there are no further case blocks, the match statement '
|
||||
'is\n'
|
||||
' completed.\n'
|
||||
'\n'
|
||||
'Note:\n'
|
||||
'\n'
|
||||
' Users should generally never rely on a pattern being '
|
||||
'evaluated.\n'
|
||||
' Depending on implementation, the interpreter may cache values '
|
||||
'or use\n'
|
||||
' other optimizations which skip repeated evaluations.\n'
|
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'\n'
|
||||
'A sample match statement:\n'
|
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'\n'
|
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' >>> flag = False\n'
|
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' >>> match (100, 200):\n'
|
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' ... case (100, 300): # Mismatch: 200 != 300\n'
|
||||
" ... print('Case 1')\n"
|
||||
' ... case (100, 200) if flag: # Successful match, but '
|
||||
'guard fails\n'
|
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" ... print('Case 2')\n"
|
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' ... case (100, y): # Matches and binds y to 200\n'
|
||||
" ... print(f'Case 3, y: {y}')\n"
|
||||
' ... case _: # Pattern not attempted\n'
|
||||
" ... print('Case 4, I match anything!')\n"
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||||
' ...\n'
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||||
' Case 3, y: 200\n'
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'\n'
|
||||
'In this case, "if flag" is a guard. Read more about that in the '
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'next\n'
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||||
'section.\n'
|
||||
'\n'
|
||||
'\n'
|
||||
'Guards\n'
|
||||
'------\n'
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'\n'
|
||||
' guard ::= "if" named_expression\n'
|
||||
'\n'
|
||||
'A "guard" (which is part of the "case") must succeed for code '
|
||||
'inside\n'
|
||||
'the "case" block to execute. It takes the form: "if" followed '
|
||||
'by an\n'
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||||
'expression.\n'
|
||||
'\n'
|
||||
'The logical flow of a "case" block with a "guard" follows:\n'
|
||||
'\n'
|
||||
'1. Check that the pattern in the "case" block succeeded. If '
|
||||
'the\n'
|
||||
' pattern failed, the "guard" is not evaluated and the next '
|
||||
'"case"\n'
|
||||
' block is checked.\n'
|
||||
'\n'
|
||||
'2. If the pattern succeeded, evaluate the "guard".\n'
|
||||
'\n'
|
||||
' * If the "guard" condition evaluates to “truthy”, the case '
|
||||
'block is\n'
|
||||
' selected.\n'
|
||||
'\n'
|
||||
' * If the "guard" condition evaluates to “falsy”, the case '
|
||||
'block is\n'
|
||||
' not selected.\n'
|
||||
'\n'
|
||||
' * If the "guard" raises an exception during evaluation, the\n'
|
||||
' exception bubbles up.\n'
|
||||
'\n'
|
||||
'Guards are allowed to have side effects as they are '
|
||||
'expressions.\n'
|
||||
'Guard evaluation must proceed from the first to the last case '
|
||||
'block,\n'
|
||||
'one at a time, skipping case blocks whose pattern(s) don’t all\n'
|
||||
'succeed. (I.e., guard evaluation must happen in order.) Guard\n'
|
||||
'evaluation must stop once a case block is selected.\n'
|
||||
'\n'
|
||||
'\n'
|
||||
'Irrefutable Case Blocks\n'
|
||||
'-----------------------\n'
|
||||
'\n'
|
||||
'An irrefutable case block is a match-all case block. A match\n'
|
||||
'statement may have at most one irrefutable case block, and it '
|
||||
'must be\n'
|
||||
'last.\n'
|
||||
'\n'
|
||||
'A case block is considered irrefutable if it has no guard and '
|
||||
'its\n'
|
||||
'pattern is irrefutable. A pattern is considered irrefutable if '
|
||||
'we can\n'
|
||||
'prove from its syntax alone that it will always succeed. Only '
|
||||
'the\n'
|
||||
'following patterns are irrefutable:\n'
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'\n'
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||||
'* AS Patterns whose left-hand side is irrefutable\n'
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'\n'
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||||
'* OR Patterns containing at least one irrefutable pattern\n'
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||||
'\n'
|
||||
'* Capture Patterns\n'
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||||
'\n'
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||||
'* Wildcard Patterns\n'
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'\n'
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||||
'* parenthesized irrefutable patterns\n'
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'\n'
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||||
'\n'
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||||
'Patterns\n'
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||||
'--------\n'
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||||
'\n'
|
||||
'Note:\n'
|
||||
'\n'
|
||||
' This section uses grammar notations beyond standard EBNF:\n'
|
||||
'\n'
|
||||
' * the notation "SEP.RULE+" is shorthand for "RULE (SEP '
|
||||
'RULE)*"\n'
|
||||
'\n'
|
||||
' * the notation "!RULE" is shorthand for a negative lookahead\n'
|
||||
' assertion\n'
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||||
'\n'
|
||||
'The top-level syntax for "patterns" is:\n'
|
||||
'\n'
|
||||
' patterns ::= open_sequence_pattern | pattern\n'
|
||||
' pattern ::= as_pattern | or_pattern\n'
|
||||
' closed_pattern ::= | literal_pattern\n'
|
||||
' | capture_pattern\n'
|
||||
' | wildcard_pattern\n'
|
||||
' | value_pattern\n'
|
||||
' | group_pattern\n'
|
||||
' | sequence_pattern\n'
|
||||
' | mapping_pattern\n'
|
||||
' | class_pattern\n'
|
||||
'\n'
|
||||
'The descriptions below will include a description “in simple '
|
||||
'terms” of\n'
|
||||
'what a pattern does for illustration purposes (credits to '
|
||||
'Raymond\n'
|
||||
'Hettinger for a document that inspired most of the '
|
||||
'descriptions). Note\n'
|
||||
'that these descriptions are purely for illustration purposes and '
|
||||
'**may\n'
|
||||
'not** reflect the underlying implementation. Furthermore, they '
|
||||
'do not\n'
|
||||
'cover all valid forms.\n'
|
||||
'\n'
|
||||
'\n'
|
||||
'OR Patterns\n'
|
||||
'~~~~~~~~~~~\n'
|
||||
'\n'
|
||||
'An OR pattern is two or more patterns separated by vertical bars '
|
||||
'"|".\n'
|
||||
'Syntax:\n'
|
||||
'\n'
|
||||
' or_pattern ::= "|".closed_pattern+\n'
|
||||
'\n'
|
||||
'Only the final subpattern may be irrefutable, and each '
|
||||
'subpattern must\n'
|
||||
'bind the same set of names to avoid ambiguity.\n'
|
||||
'\n'
|
||||
'An OR pattern matches each of its subpatterns in turn to the '
|
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'subject\n'
|
||||
'value, until one succeeds. The OR pattern is then considered\n'
|
||||
'successful. Otherwise, if none of the subpatterns succeed, the '
|
||||
'OR\n'
|
||||
'pattern fails.\n'
|
||||
'\n'
|
||||
'In simple terms, "P1 | P2 | ..." will try to match "P1", if it '
|
||||
'fails\n'
|
||||
'it will try to match "P2", succeeding immediately if any '
|
||||
'succeeds,\n'
|
||||
'failing otherwise.\n'
|
||||
'\n'
|
||||
'\n'
|
||||
'AS Patterns\n'
|
||||
'~~~~~~~~~~~\n'
|
||||
'\n'
|
||||
'An AS pattern matches an OR pattern on the left of the "as" '
|
||||
'keyword\n'
|
||||
'against a subject. Syntax:\n'
|
||||
'\n'
|
||||
' as_pattern ::= or_pattern "as" capture_pattern\n'
|
||||
'\n'
|
||||
'If the OR pattern fails, the AS pattern fails. Otherwise, the '
|
||||
'AS\n'
|
||||
'pattern binds the subject to the name on the right of the as '
|
||||
'keyword\n'
|
||||
'and succeeds. "capture_pattern" cannot be a a "_".\n'
|
||||
'\n'
|
||||
'In simple terms "P as NAME" will match with "P", and on success '
|
||||
'it\n'
|
||||
'will set "NAME = <subject>".\n'
|
||||
'\n'
|
||||
'\n'
|
||||
'Literal Patterns\n'
|
||||
'~~~~~~~~~~~~~~~~\n'
|
||||
'\n'
|
||||
'A literal pattern corresponds to most literals in Python. '
|
||||
'Syntax:\n'
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||||
'\n'
|
||||
' literal_pattern ::= signed_number\n'
|
||||
' | signed_number "+" NUMBER\n'
|
||||
' | signed_number "-" NUMBER\n'
|
||||
' | strings\n'
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||||
' | "None"\n'
|
||||
' | "True"\n'
|
||||
' | "False"\n'
|
||||
' | signed_number: NUMBER | "-" NUMBER\n'
|
||||
'\n'
|
||||
'The rule "strings" and the token "NUMBER" are defined in the '
|
||||
'standard\n'
|
||||
'Python grammar. Triple-quoted strings are supported. Raw '
|
||||
'strings and\n'
|
||||
'byte strings are supported. Formatted string literals are not\n'
|
||||
'supported.\n'
|
||||
'\n'
|
||||
'The forms "signed_number \'+\' NUMBER" and "signed_number \'-\' '
|
||||
'NUMBER"\n'
|
||||
'are for expressing complex numbers; they require a real number '
|
||||
'on the\n'
|
||||
'left and an imaginary number on the right. E.g. "3 + 4j".\n'
|
||||
'\n'
|
||||
'In simple terms, "LITERAL" will succeed only if "<subject> ==\n'
|
||||
'LITERAL". For the singletons "None", "True" and "False", the '
|
||||
'"is"\n'
|
||||
'operator is used.\n'
|
||||
'\n'
|
||||
'\n'
|
||||
'Capture Patterns\n'
|
||||
'~~~~~~~~~~~~~~~~\n'
|
||||
'\n'
|
||||
'A capture pattern binds the subject value to a name. Syntax:\n'
|
||||
'\n'
|
||||
" capture_pattern ::= !'_' NAME\n"
|
||||
'\n'
|
||||
'A single underscore "_" is not a capture pattern (this is what '
|
||||
'"!\'_\'"\n'
|
||||
'expresses). And is instead treated as a "wildcard_pattern".\n'
|
||||
'\n'
|
||||
'In a given pattern, a given name can only be bound once. E.g. '
|
||||
'"case\n'
|
||||
'x, x: ..." is invalid while "case [x] | x: ..." is allowed.\n'
|
||||
'\n'
|
||||
'Capture patterns always succeed. The binding follows scoping '
|
||||
'rules\n'
|
||||
'established by the assignment expression operator in **PEP '
|
||||
'572**; the\n'
|
||||
'name becomes a local variable in the closest containing function '
|
||||
'scope\n'
|
||||
'unless there’s an applicable "global" or "nonlocal" statement.\n'
|
||||
'\n'
|
||||
'In simple terms "NAME" will always succeed and it will set "NAME '
|
||||
'=\n'
|
||||
'<subject>".\n'
|
||||
'\n'
|
||||
'\n'
|
||||
'Wildcard Patterns\n'
|
||||
'~~~~~~~~~~~~~~~~~\n'
|
||||
'\n'
|
||||
'A wildcard pattern always succeeds (matches anything) and binds '
|
||||
'no\n'
|
||||
'name. Syntax:\n'
|
||||
'\n'
|
||||
" wildcard_pattern ::= '_'\n"
|
||||
'\n'
|
||||
'"_" is a soft keyword.\n'
|
||||
'\n'
|
||||
'In simple terms, "_" will always succeed.\n'
|
||||
'\n'
|
||||
'\n'
|
||||
'Value Patterns\n'
|
||||
'~~~~~~~~~~~~~~\n'
|
||||
'\n'
|
||||
'A value pattern represents a named value in Python. Syntax:\n'
|
||||
'\n'
|
||||
' value_pattern ::= attr\n'
|
||||
' attr ::= name_or_attr "." NAME\n'
|
||||
' name_or_attr ::= attr | NAME\n'
|
||||
'\n'
|
||||
'The dotted name in the pattern is looked up using standard '
|
||||
'Python name\n'
|
||||
'resolution rules. The pattern succeeds if the value found '
|
||||
'compares\n'
|
||||
'equal to the subject value (using the "==" equality operator).\n'
|
||||
'\n'
|
||||
'In simple terms "NAME1.NAME2" will succeed only if "<subject> '
|
||||
'==\n'
|
||||
'NAME1.NAME2"\n'
|
||||
'\n'
|
||||
'Note:\n'
|
||||
'\n'
|
||||
' If the same value occurs multiple times in the same match '
|
||||
'statement,\n'
|
||||
' the interpreter may cache the first value found and reuse it '
|
||||
'rather\n'
|
||||
' than repeat the same lookup. This cache is strictly tied to a '
|
||||
'given\n'
|
||||
' execution of a given match statement.\n'
|
||||
'\n'
|
||||
'\n'
|
||||
'Group Patterns\n'
|
||||
'~~~~~~~~~~~~~~\n'
|
||||
'\n'
|
||||
'A group pattern allows users to add parentheses around patterns '
|
||||
'to\n'
|
||||
'emphasize the intended grouping. Otherwise, it has no '
|
||||
'additional\n'
|
||||
'syntax. Syntax:\n'
|
||||
'\n'
|
||||
" group_pattern ::= '(' pattern ')'\n"
|
||||
'\n'
|
||||
'In simple terms "(P)" has the same effect as "P".\n'
|
||||
'\n'
|
||||
'\n'
|
||||
'Sequence Patterns\n'
|
||||
'~~~~~~~~~~~~~~~~~\n'
|
||||
'\n'
|
||||
'A sequence pattern contains several subpatterns to be matched '
|
||||
'against\n'
|
||||
'sequence elements. The syntax is similar to the unpacking of a '
|
||||
'list or\n'
|
||||
'tuple.\n'
|
||||
'\n'
|
||||
' sequence_pattern ::= "[" [maybe_sequence_pattern] "]"\n'
|
||||
' | "(" [open_sequence_pattern] ")"\n'
|
||||
' open_sequence_pattern ::= maybe_star_pattern "," '
|
||||
'[maybe_sequence_pattern]\n'
|
||||
' maybe_sequence_pattern ::= ",".maybe_star_pattern+ ","?\n'
|
||||
' maybe_star_pattern ::= star_pattern | pattern\n'
|
||||
' star_pattern ::= "*" (capture_pattern | '
|
||||
'wildcard_pattern)\n'
|
||||
'\n'
|
||||
'There is no difference if parentheses or square brackets are '
|
||||
'used for\n'
|
||||
'sequence patterns (i.e. "(...)" vs "[...]" ).\n'
|
||||
'\n'
|
||||
'Note:\n'
|
||||
'\n'
|
||||
' A single pattern enclosed in parentheses without a trailing '
|
||||
'comma\n'
|
||||
' (e.g. "(3 | 4)") is a group pattern. While a single pattern '
|
||||
'enclosed\n'
|
||||
' in square brackets (e.g. "[3 | 4]") is still a sequence '
|
||||
'pattern.\n'
|
||||
'\n'
|
||||
'At most one star subpattern may be in a sequence pattern. The '
|
||||
'star\n'
|
||||
'subpattern may occur in any position. If no star subpattern is\n'
|
||||
'present, the sequence pattern is a fixed-length sequence '
|
||||
'pattern;\n'
|
||||
'otherwise it is a variable-length sequence pattern.\n'
|
||||
'\n'
|
||||
'The following is the logical flow for matching a sequence '
|
||||
'pattern\n'
|
||||
'against a subject value:\n'
|
||||
'\n'
|
||||
'1. If the subject value is not an instance of a\n'
|
||||
' "collections.abc.Sequence" the sequence pattern fails.\n'
|
||||
'\n'
|
||||
'2. If the subject value is an instance of "str", "bytes" or\n'
|
||||
' "bytearray" the sequence pattern fails.\n'
|
||||
'\n'
|
||||
'3. The subsequent steps depend on whether the sequence pattern '
|
||||
'is\n'
|
||||
' fixed or variable-length.\n'
|
||||
'\n'
|
||||
' If the sequence pattern is fixed-length:\n'
|
||||
'\n'
|
||||
' 1. If the length of the subject sequence is not equal to the '
|
||||
'number\n'
|
||||
' of subpatterns, the sequence pattern fails\n'
|
||||
'\n'
|
||||
' 2. Subpatterns in the sequence pattern are matched to their\n'
|
||||
' corresponding items in the subject sequence from left to '
|
||||
'right.\n'
|
||||
' Matching stops as soon as a subpattern fails. If all\n'
|
||||
' subpatterns succeed in matching their corresponding item, '
|
||||
'the\n'
|
||||
' sequence pattern succeeds.\n'
|
||||
'\n'
|
||||
' Otherwise, if the sequence pattern is variable-length:\n'
|
||||
'\n'
|
||||
' 1. If the length of the subject sequence is less than the '
|
||||
'number of\n'
|
||||
' non-star subpatterns, the sequence pattern fails.\n'
|
||||
'\n'
|
||||
' 2. The leading non-star subpatterns are matched to their\n'
|
||||
' corresponding items as for fixed-length sequences.\n'
|
||||
'\n'
|
||||
' 3. If the previous step succeeds, the star subpattern matches '
|
||||
'a\n'
|
||||
' list formed of the remaining subject items, excluding the\n'
|
||||
' remaining items corresponding to non-star subpatterns '
|
||||
'following\n'
|
||||
' the star subpattern.\n'
|
||||
'\n'
|
||||
' 4. Remaining non-star subpatterns are matched to their\n'
|
||||
' corresponding subject items, as for a fixed-length '
|
||||
'sequence.\n'
|
||||
'\n'
|
||||
' Note:\n'
|
||||
'\n'
|
||||
' The length of the subject sequence is obtained via "len()" '
|
||||
'(i.e.\n'
|
||||
' via the "__len__()" protocol). This length may be cached '
|
||||
'by the\n'
|
||||
' interpreter in a similar manner as value patterns.\n'
|
||||
'\n'
|
||||
'In simple terms "[P1, P2, P3," … ", P<N>]" matches only if all '
|
||||
'the\n'
|
||||
'following happens:\n'
|
||||
'\n'
|
||||
'* "isinstance(<subject>, collections.abc.Sequence)"\n'
|
||||
'\n'
|
||||
'* "len(subject) == <N>"\n'
|
||||
'\n'
|
||||
'* "P1" matches "<subject>[0]" (note that this match can also '
|
||||
'bind\n'
|
||||
' names)\n'
|
||||
'\n'
|
||||
'* "P2" matches "<subject>[1]" (note that this match can also '
|
||||
'bind\n'
|
||||
' names)\n'
|
||||
'\n'
|
||||
'* … and so on for the corresponding pattern/element.\n'
|
||||
'\n'
|
||||
'\n'
|
||||
'Mapping Patterns\n'
|
||||
'~~~~~~~~~~~~~~~~\n'
|
||||
'\n'
|
||||
'A mapping pattern contains one or more key-value patterns. The '
|
||||
'syntax\n'
|
||||
'is similar to the construction of a dictionary. Syntax:\n'
|
||||
'\n'
|
||||
' mapping_pattern ::= "{" [items_pattern] "}"\n'
|
||||
' items_pattern ::= ",".key_value_pattern+ ","?\n'
|
||||
' key_value_pattern ::= (literal_pattern | value_pattern) ":" '
|
||||
'pattern\n'
|
||||
' | double_star_pattern\n'
|
||||
' double_star_pattern ::= "**" capture_pattern\n'
|
||||
'\n'
|
||||
'At most one double star pattern may be in a mapping pattern. '
|
||||
'The\n'
|
||||
'double star pattern must be the last subpattern in the mapping\n'
|
||||
'pattern.\n'
|
||||
'\n'
|
||||
'Duplicate key values in mapping patterns are disallowed. (If all '
|
||||
'key\n'
|
||||
'patterns are literal patterns this is considered a syntax '
|
||||
'error;\n'
|
||||
'otherwise this is a runtime error and will raise "ValueError".)\n'
|
||||
'\n'
|
||||
'The following is the logical flow for matching a mapping '
|
||||
'pattern\n'
|
||||
'against a subject value:\n'
|
||||
'\n'
|
||||
'1. If the subject value is not an instance of\n'
|
||||
' "collections.abc.Mapping", the mapping pattern fails.\n'
|
||||
'\n'
|
||||
'2. If every key given in the mapping pattern is present in the '
|
||||
'subject\n'
|
||||
' mapping, and the pattern for each key matches the '
|
||||
'corresponding\n'
|
||||
' item of the subject mapping, the mapping pattern succeeds.\n'
|
||||
'\n'
|
||||
'3. If duplicate keys are detected in the mapping pattern, the '
|
||||
'pattern\n'
|
||||
' is considered invalid and "ValueError" is raised.\n'
|
||||
'\n'
|
||||
'Note:\n'
|
||||
'\n'
|
||||
' Key-value pairs are matched using the two-argument form of '
|
||||
'the\n'
|
||||
' mapping subject’s "get()" method. Matched key-value pairs '
|
||||
'must\n'
|
||||
' already be present in the mapping, and not created on-the-fly '
|
||||
'via\n'
|
||||
' "__missing__()" or "__getitem__()".\n'
|
||||
'\n'
|
||||
'In simple terms "{KEY1: P1, KEY2: P2, ... }" matches only if all '
|
||||
'the\n'
|
||||
'following happens:\n'
|
||||
'\n'
|
||||
'* "isinstance(<subject>, collections.abc.Mapping)"\n'
|
||||
'\n'
|
||||
'* "KEY1 in <subject>"\n'
|
||||
'\n'
|
||||
'* "P1" matches "<subject>[KEY1]"\n'
|
||||
'\n'
|
||||
'* … and so on for the corresponding KEY/pattern pair.\n'
|
||||
'\n'
|
||||
'\n'
|
||||
'Class Patterns\n'
|
||||
'~~~~~~~~~~~~~~\n'
|
||||
'\n'
|
||||
'A class pattern represents a class and its positional and '
|
||||
'keyword\n'
|
||||
'arguments (if any). Syntax:\n'
|
||||
'\n'
|
||||
' class_pattern ::= name_or_attr "(" [pattern_arguments '
|
||||
'","?] ")"\n'
|
||||
' pattern_arguments ::= positional_patterns ["," '
|
||||
'keyword_patterns]\n'
|
||||
' | keyword_patterns\n'
|
||||
' positional_patterns ::= ",".pattern+\n'
|
||||
' keyword_patterns ::= ",".keyword_pattern+\n'
|
||||
' keyword_pattern ::= NAME "=" pattern\n'
|
||||
'\n'
|
||||
'The same keyword should not be repeated in class patterns.\n'
|
||||
'\n'
|
||||
'The following is the logical flow for matching a mapping '
|
||||
'pattern\n'
|
||||
'against a subject value:\n'
|
||||
'\n'
|
||||
'1. If "name_or_attr" is not an instance of the builtin "type" , '
|
||||
'raise\n'
|
||||
' "TypeError".\n'
|
||||
'\n'
|
||||
'2. If the subject value is not an instance of "name_or_attr" '
|
||||
'(tested\n'
|
||||
' via "isinstance()"), the class pattern fails.\n'
|
||||
'\n'
|
||||
'3. If no pattern arguments are present, the pattern succeeds.\n'
|
||||
' Otherwise, the subsequent steps depend on whether keyword or\n'
|
||||
' positional argument patterns are present.\n'
|
||||
'\n'
|
||||
' For a number of built-in types (specified below), a single\n'
|
||||
' positional subpattern is accepted which will match the '
|
||||
'entire\n'
|
||||
' subject; for these types no keyword patterns are accepted.\n'
|
||||
'\n'
|
||||
' If only keyword patterns are present, they are processed as\n'
|
||||
' follows, one by one:\n'
|
||||
'\n'
|
||||
' I. The keyword is looked up as an attribute on the subject.\n'
|
||||
'\n'
|
||||
' * If this raises an exception other than "AttributeError", '
|
||||
'the\n'
|
||||
' exception bubbles up.\n'
|
||||
'\n'
|
||||
' * If this raises "AttributeError", the class pattern has '
|
||||
'failed.\n'
|
||||
'\n'
|
||||
' * Else, the subpattern associated with the keyword pattern '
|
||||
'is\n'
|
||||
' matched against the subject’s attribute value. If this '
|
||||
'fails,\n'
|
||||
' the class pattern fails; if this succeeds, the match '
|
||||
'proceeds\n'
|
||||
' to the next keyword.\n'
|
||||
'\n'
|
||||
' II. If all keyword patterns succeed, the class pattern '
|
||||
'succeeds.\n'
|
||||
'\n'
|
||||
' If any positional patterns are present, they are converted '
|
||||
'to\n'
|
||||
' keyword patterns using the "__match_args__" attribute on the '
|
||||
'class\n'
|
||||
' "name_or_attr" before matching:\n'
|
||||
'\n'
|
||||
' I. The equivalent of "getattr(cls, "__match_args__", ()))" '
|
||||
'is\n'
|
||||
' called.\n'
|
||||
'\n'
|
||||
' * If this raises an exception, the exception bubbles up.\n'
|
||||
'\n'
|
||||
' * If the returned value is not a list or tuple, the '
|
||||
'conversion\n'
|
||||
' fails and "TypeError" is raised.\n'
|
||||
'\n'
|
||||
' * If there are more positional patterns than\n'
|
||||
' "len(cls.__match_args__)", "TypeError" is raised.\n'
|
||||
'\n'
|
||||
' * Otherwise, positional pattern "i" is converted to a '
|
||||
'keyword\n'
|
||||
' pattern using "__match_args__[i]" as the keyword.\n'
|
||||
' "__match_args__[i]" must be a string; if not "TypeError" '
|
||||
'is\n'
|
||||
' raised.\n'
|
||||
'\n'
|
||||
' * If there are duplicate keywords, "TypeError" is raised.\n'
|
||||
'\n'
|
||||
' See also:\n'
|
||||
'\n'
|
||||
' Customizing positional arguments in class pattern '
|
||||
'matching\n'
|
||||
'\n'
|
||||
' II. Once all positional patterns have been converted to '
|
||||
'keyword\n'
|
||||
' patterns,\n'
|
||||
' the match proceeds as if there were only keyword '
|
||||
'patterns.\n'
|
||||
'\n'
|
||||
' For the following built-in types the handling of positional\n'
|
||||
' subpatterns is different:\n'
|
||||
'\n'
|
||||
' * "bool"\n'
|
||||
'\n'
|
||||
' * "bytearray"\n'
|
||||
'\n'
|
||||
' * "bytes"\n'
|
||||
'\n'
|
||||
' * "dict"\n'
|
||||
'\n'
|
||||
' * "float"\n'
|
||||
'\n'
|
||||
' * "frozenset"\n'
|
||||
'\n'
|
||||
' * "int"\n'
|
||||
'\n'
|
||||
' * "list"\n'
|
||||
'\n'
|
||||
' * "set"\n'
|
||||
'\n'
|
||||
' * "str"\n'
|
||||
'\n'
|
||||
' * "tuple"\n'
|
||||
'\n'
|
||||
' These classes accept a single positional argument, and the '
|
||||
'pattern\n'
|
||||
' there is matched against the whole object rather than an '
|
||||
'attribute.\n'
|
||||
' For example "int(0|1)" matches the value "0", but not the '
|
||||
'values\n'
|
||||
' "0.0" or "False".\n'
|
||||
'\n'
|
||||
'In simple terms "CLS(P1, attr=P2)" matches only if the '
|
||||
'following\n'
|
||||
'happens:\n'
|
||||
'\n'
|
||||
'* "isinstance(<subject>, CLS)"\n'
|
||||
'\n'
|
||||
'* convert "P1" to a keyword pattern using "CLS.__match_args__"\n'
|
||||
'\n'
|
||||
'* For each keyword argument "attr=P2":\n'
|
||||
' * "hasattr(<subject>, "attr")"\n'
|
||||
'\n'
|
||||
' * "P2" matches "<subject>.attr"\n'
|
||||
'\n'
|
||||
'* … and so on for the corresponding keyword argument/pattern '
|
||||
'pair.\n'
|
||||
'\n'
|
||||
'See also:\n'
|
||||
'\n'
|
||||
' * **PEP 634** – Structural Pattern Matching: Specification\n'
|
||||
'\n'
|
||||
' * **PEP 636** – Structural Pattern Matching: Tutorial\n'
|
||||
'\n'
|
||||
'\n'
|
||||
'Function definitions\n'
|
||||
'====================\n'
|
||||
'\n'
|
||||
|
|
@ -6197,6 +6929,28 @@ topics = {'assert': 'The "assert" statement\n'
|
|||
' async elif if or yield\n'
|
||||
'\n'
|
||||
'\n'
|
||||
'Soft Keywords\n'
|
||||
'=============\n'
|
||||
'\n'
|
||||
'New in version 3.10.\n'
|
||||
'\n'
|
||||
'Some identifiers are only reserved under specific contexts. '
|
||||
'These are\n'
|
||||
'known as *soft keywords*. The identifiers "match", "case" '
|
||||
'and "_" can\n'
|
||||
'syntactically act as keywords in contexts related to the '
|
||||
'pattern\n'
|
||||
'matching statement, but this distinction is done at the '
|
||||
'parser level,\n'
|
||||
'not when tokenizing.\n'
|
||||
'\n'
|
||||
'As soft keywords, their use with pattern matching is possible '
|
||||
'while\n'
|
||||
'still preserving compatibility with existing code that uses '
|
||||
'"match",\n'
|
||||
'"case" and "_" as identifier names.\n'
|
||||
'\n'
|
||||
'\n'
|
||||
'Reserved classes of identifiers\n'
|
||||
'===============================\n'
|
||||
'\n'
|
||||
|
|
@ -9907,6 +10661,52 @@ topics = {'assert': 'The "assert" statement\n'
|
|||
' statement.\n'
|
||||
'\n'
|
||||
'\n'
|
||||
'Customizing positional arguments in class pattern matching\n'
|
||||
'==========================================================\n'
|
||||
'\n'
|
||||
'When using a class name in a pattern, positional arguments '
|
||||
'in the\n'
|
||||
'pattern are not allowed by default, i.e. "case MyClass(x, '
|
||||
'y)" is\n'
|
||||
'typically invalid without special support in "MyClass". To '
|
||||
'be able to\n'
|
||||
'use that kind of patterns, the class needs to define a\n'
|
||||
'*__match_args__* attribute.\n'
|
||||
'\n'
|
||||
'object.__match_args__\n'
|
||||
'\n'
|
||||
' This class variable can be assigned a tuple or list of '
|
||||
'strings.\n'
|
||||
' When this class is used in a class pattern with '
|
||||
'positional\n'
|
||||
' arguments, each positional argument will be converted '
|
||||
'into a\n'
|
||||
' keyword argument, using the corresponding value in '
|
||||
'*__match_args__*\n'
|
||||
' as the keyword. The absence of this attribute is '
|
||||
'equivalent to\n'
|
||||
' setting it to "()".\n'
|
||||
'\n'
|
||||
'For example, if "MyClass.__match_args__" is "("left", '
|
||||
'"center",\n'
|
||||
'"right")" that means that "case MyClass(x, y)" is equivalent '
|
||||
'to "case\n'
|
||||
'MyClass(left=x, center=y)". Note that the number of '
|
||||
'arguments in the\n'
|
||||
'pattern must be smaller than or equal to the number of '
|
||||
'elements in\n'
|
||||
'*__match_args__*; if it is larger, the pattern match attempt '
|
||||
'will\n'
|
||||
'raise a "TypeError".\n'
|
||||
'\n'
|
||||
'New in version 3.10.\n'
|
||||
'\n'
|
||||
'See also:\n'
|
||||
'\n'
|
||||
' **PEP 634** - Structural Pattern Matching\n'
|
||||
' The specification for the Python "match" statement.\n'
|
||||
'\n'
|
||||
'\n'
|
||||
'Special method lookup\n'
|
||||
'=====================\n'
|
||||
'\n'
|
||||
|
|
|
|||
|
|
@ -0,0 +1,538 @@
|
|||
.. bpo: 42967
|
||||
.. date: 2021-02-14-15-59-16
|
||||
.. nonce: YApqDS
|
||||
.. release date: 2021-03-01
|
||||
.. section: Security
|
||||
|
||||
Fix web cache poisoning vulnerability by defaulting the query args separator
|
||||
to ``&``, and allowing the user to choose a custom separator.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 43321
|
||||
.. date: 2021-02-26-13-17-52
|
||||
.. nonce: TCS3ph
|
||||
.. section: Core and Builtins
|
||||
|
||||
Fix ``SystemError`` raised when ``PyArg_Parse*()`` is used with ``#`` but
|
||||
without ``PY_SSIZE_T_CLEAN`` defined.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 36346
|
||||
.. date: 2021-02-22-19-00-00
|
||||
.. nonce: uAoni0
|
||||
.. section: Core and Builtins
|
||||
|
||||
``PyArg_Parse*()`` functions now emits ``DeprecationWarning`` when ``u`` or
|
||||
``Z`` format is used. See :pep:`623` for detail.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 43277
|
||||
.. date: 2021-02-20-16-50-22
|
||||
.. nonce: FXkRXk
|
||||
.. section: Core and Builtins
|
||||
|
||||
Add a new :c:func:`PySet_CheckExact` function to the C-API to check if an
|
||||
object is an instance of :class:`set` but not an instance of a subtype.
|
||||
Patch by Pablo Galindo.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 42990
|
||||
.. date: 2021-02-18-15-12-30
|
||||
.. nonce: toAqBH
|
||||
.. section: Core and Builtins
|
||||
|
||||
The :data:`types.FunctionType` constructor now inherits the current builtins
|
||||
if the *globals* dictionary has no ``"__builtins__"`` key, rather than using
|
||||
``{"None": None}`` as builtins: same behavior as :func:`eval` and
|
||||
:func:`exec` functions. Defining a function with ``def function(...): ...``
|
||||
in Python is not affected, globals cannot be overriden with this syntax: it
|
||||
also inherits the current builtins. Patch by Victor Stinner.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 42990
|
||||
.. date: 2021-02-17-19-02-21
|
||||
.. nonce: SKXHiI
|
||||
.. section: Core and Builtins
|
||||
|
||||
Functions have a new ``__builtins__`` attribute which is used to look for
|
||||
builtin symbols when a function is executed, instead of looking into
|
||||
``__globals__['__builtins__']``. Patch by Mark Shannon and Victor Stinner.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 43149
|
||||
.. date: 2021-02-07-03-27-14
|
||||
.. nonce: 0umPKD
|
||||
.. section: Core and Builtins
|
||||
|
||||
Improve the error message in the parser for exception groups without
|
||||
parentheses. Patch by Pablo Galindo.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 43121
|
||||
.. date: 2021-02-03-22-33-05
|
||||
.. nonce: jqcViq
|
||||
.. section: Core and Builtins
|
||||
|
||||
Fixed an incorrect :exc:`SyntaxError` message for missing comma in literals.
|
||||
Patch by Pablo Galindo.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 42819
|
||||
.. date: 2021-01-04-23-54-34
|
||||
.. nonce: 4KO6wU
|
||||
.. section: Core and Builtins
|
||||
|
||||
:mod:`readline`: Explicitly disable bracketed paste in the interactive
|
||||
interpreter, even if it's set in the inputrc, is enabled by default (eg GNU
|
||||
Readline 8.1), or a user calls ``readline.read_init_file()``. The Python
|
||||
REPL has not implemented bracketed paste support. Also, bracketed mode
|
||||
writes the ``"\x1b[?2004h"`` escape sequence into stdout which causes test
|
||||
failures in applications that don't support it. It can still be explicitly
|
||||
enabled by calling ``readline.parse_and_bind("set enable-bracketed-paste
|
||||
on")``. Patch by Dustin Rodrigues.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 42808
|
||||
.. date: 2021-01-02-05-10-58
|
||||
.. nonce: AOxgxl
|
||||
.. section: Core and Builtins
|
||||
|
||||
Simple calls to ``type(object)`` are now faster due to the ``vectorcall``
|
||||
calling convention. Patch by Dennis Sweeney.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 42217
|
||||
.. date: 2020-10-31-16-54-00
|
||||
.. nonce: GdcHe5
|
||||
.. section: Core and Builtins
|
||||
|
||||
Make the compiler merges same co_code and co_linetable objects in a module
|
||||
like already did for co_consts.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 41972
|
||||
.. date: 2020-10-23-23-17-23
|
||||
.. nonce: kbAwg4
|
||||
.. section: Core and Builtins
|
||||
|
||||
Substring search functions such as ``str1 in str2`` and ``str2.find(str1)``
|
||||
now sometimes use the "Two-Way" string comparison algorithm to avoid
|
||||
quadratic behavior on long strings.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 42128
|
||||
.. date: 2020-10-23-08-54-04
|
||||
.. nonce: SWmVEm
|
||||
.. section: Core and Builtins
|
||||
|
||||
Implement :pep:`634` (structural pattern matching). Patch by Brandt Bucher.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 40692
|
||||
.. date: 2020-05-19-22-10-05
|
||||
.. nonce: ajEhrR
|
||||
.. section: Core and Builtins
|
||||
|
||||
In the :class:`concurrent.futures.ProcessPoolExecutor`, validate that
|
||||
:func:`multiprocess.synchronize` is available on a given platform and rely
|
||||
on that check in the :mod:`concurrent.futures` test suite so we can run
|
||||
tests that are unrelated to :class:`ProcessPoolExecutor` on those platforms.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 38302
|
||||
.. date: 2019-09-28-12-23-23
|
||||
.. nonce: hsCNgX
|
||||
.. section: Core and Builtins
|
||||
|
||||
If :func:`object.__ipow__` returns :const:`NotImplemented`, the operator
|
||||
will correctly fall back to :func:`object.__pow__` and
|
||||
:func:`object.__rpow__` as expected.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 43316
|
||||
.. date: 2021-02-25-09-44-36
|
||||
.. nonce: k9Gyqn
|
||||
.. section: Library
|
||||
|
||||
The ``python -m gzip`` command line application now properly fails when
|
||||
detecting an unsupported extension. It exits with a non-zero exit code and
|
||||
prints an error message to stderr.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 43317
|
||||
.. date: 2021-02-25-09-08-55
|
||||
.. nonce: qrOOpB
|
||||
.. section: Library
|
||||
|
||||
Set the chunk size for the ``gzip`` module main function to
|
||||
io.DEFAULT_BUFFER_SIZE. This is slightly faster than the 1024 bytes constant
|
||||
that was used previously.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 43146
|
||||
.. date: 2021-02-23-17-20-16
|
||||
.. nonce: JAFplg
|
||||
.. section: Library
|
||||
|
||||
Handle None in single-arg versions of :func:`~traceback.print_exception` and
|
||||
:func:`~traceback.format_exception`.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 43260
|
||||
.. date: 2021-02-20-12-15-29
|
||||
.. nonce: 6znAas
|
||||
.. section: Library
|
||||
|
||||
Fix TextIOWrapper can not flush internal buffer forever after very large
|
||||
text is written.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 43258
|
||||
.. date: 2021-02-18-23-30-52
|
||||
.. nonce: LeU-q8
|
||||
.. section: Library
|
||||
|
||||
Prevent needless allocation of :mod:`sqlite3` aggregate function context
|
||||
when no rows match an aggregate query. Patch by Erlend E. Aasland.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 43251
|
||||
.. date: 2021-02-18-14-24-42
|
||||
.. nonce: n6WZDw
|
||||
.. section: Library
|
||||
|
||||
Improve :mod:`sqlite3` error handling: ``sqlite3_column_name()`` failures
|
||||
now result in :exc:`MemoryError`. Patch by Erlend E. Aasland.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 40956
|
||||
.. date: 2021-02-10-23-29-50
|
||||
.. nonce: LcAbwG
|
||||
.. section: Library
|
||||
|
||||
Fix segfault in :meth:`sqlite3.Connection.backup` if no argument was
|
||||
provided. The regression was introduced by GH-23838. Patch by Erlend E.
|
||||
Aasland.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 43172
|
||||
.. date: 2021-02-10-06-00-53
|
||||
.. nonce: ZMCJni
|
||||
.. section: Library
|
||||
|
||||
The readline module now passes its tests when built directly against
|
||||
libedit. Existing irreconcilable API differences remain in
|
||||
:func:`readline.get_begidx` and :func:`readline.get_endidx` behavior based
|
||||
on libreadline vs libedit use.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 43163
|
||||
.. date: 2021-02-08-21-13-51
|
||||
.. nonce: E2MgzH
|
||||
.. section: Library
|
||||
|
||||
Fix a bug in :mod:`codeop` that was causing it to not ask for more input
|
||||
when multi-line snippets have unclosed parentheses. Patch by Pablo Galindo
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 43162
|
||||
.. date: 2021-02-08-16-27-00
|
||||
.. nonce: t-W7h3
|
||||
.. section: Library
|
||||
|
||||
deprecate unsupported ability to access enum members as attributes of other
|
||||
enum members
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 43146
|
||||
.. date: 2021-02-06-21-21-35
|
||||
.. nonce: MHtb2v
|
||||
.. section: Library
|
||||
|
||||
Fix recent regression in None argument handling in :mod:`~traceback` module
|
||||
functions.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 43102
|
||||
.. date: 2021-02-03-22-55-27
|
||||
.. nonce: TSlZ6J
|
||||
.. section: Library
|
||||
|
||||
The namedtuple __new__ method had its __builtins__ set to None instead of an
|
||||
actual dictionary. This created problems for introspection tools.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 43106
|
||||
.. date: 2021-02-03-17-06-38
|
||||
.. nonce: SwcSuU
|
||||
.. section: Library
|
||||
|
||||
Added :data:`~os.O_EVTONLY`, :data:`~os.O_FSYNC`, :data:`~os.O_SYMLINK` and
|
||||
:data:`~os.O_NOFOLLOW_ANY` for macOS. Patch by Dong-hee Na.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 42960
|
||||
.. date: 2021-01-18-21-07-20
|
||||
.. nonce: a7Dote
|
||||
.. section: Library
|
||||
|
||||
Adds :data:`resource.RLIMIT_KQUEUES` constant from FreeBSD to the
|
||||
:mod:`resource` module.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 42151
|
||||
.. date: 2020-10-26-18-01-09
|
||||
.. nonce: et5f7s
|
||||
.. section: Library
|
||||
|
||||
Make the pure Python implementation of :mod:`xml.etree.ElementTree` behave
|
||||
the same as the C implementation (:mod:`_elementree`) regarding default
|
||||
attribute values (by not setting ``specified_attributes=1``).
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 29753
|
||||
.. date: 2020-05-02-01-01-30
|
||||
.. nonce: n2M-AF
|
||||
.. section: Library
|
||||
|
||||
In ctypes, now packed bitfields are calculated properly and the first item
|
||||
of packed bitfields is now shrank correctly.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 27646
|
||||
.. date: 2021-02-20-00-09-13
|
||||
.. nonce: HRsmo-
|
||||
.. section: Documentation
|
||||
|
||||
Clarify that 'yield from <expr>' works with any iterable, not just
|
||||
iterators.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 36346
|
||||
.. date: 2020-06-15-10-45-45
|
||||
.. nonce: H0sS_i
|
||||
.. section: Documentation
|
||||
|
||||
Update some deprecated unicode APIs which are documented as "will be removed
|
||||
in 4.0" to "3.12". See :pep:`623` for detail.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 43288
|
||||
.. date: 2021-02-21-11-11-53
|
||||
.. nonce: LfTvL-
|
||||
.. section: Tests
|
||||
|
||||
Fix test_importlib to correctly skip Unicode file tests if the fileystem
|
||||
does not support them.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 43174
|
||||
.. date: 2021-02-10-14-11-53
|
||||
.. nonce: F9zwXQ
|
||||
.. section: Build
|
||||
|
||||
Windows build now uses ``/utf-8`` compiler option.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 43103
|
||||
.. date: 2021-02-02-16-26-44
|
||||
.. nonce: VWeyP_
|
||||
.. section: Build
|
||||
|
||||
Add a new configure ``--without-static-libpython`` option to not build the
|
||||
``libpythonMAJOR.MINOR.a`` static library and not install the ``python.o``
|
||||
object file.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 13501
|
||||
.. date: 2021-01-10-22-25-23
|
||||
.. nonce: g4L-6R
|
||||
.. section: Build
|
||||
|
||||
The configure script can now use *libedit* instead of *readline* with the
|
||||
command line option ``--with-readline=editline``.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 42603
|
||||
.. date: 2020-12-08-19-25-20
|
||||
.. nonce: mXs2dB
|
||||
.. section: Build
|
||||
|
||||
Make configure script use pkg-config to detect the location of Tcl/Tk
|
||||
headers and libraries, used to build tkinter.
|
||||
|
||||
On macOS, a Tcl/Tk configuration provided by pkg-config will be preferred
|
||||
over Tcl/Tk frameworks installed in ``/{System/,}Library/Frameworks``. If
|
||||
both exist and the latter is preferred, the appropriate ``--with-tcltk-*``
|
||||
configuration options need to be explicitly set.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 39448
|
||||
.. date: 2020-01-24-12-54-22
|
||||
.. nonce: k4pv14
|
||||
.. section: Build
|
||||
|
||||
Add the "regen-frozen" makefile target that regenerates the code for the
|
||||
frozen ``__hello__`` module.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 43155
|
||||
.. date: 2021-02-10-04-16-51
|
||||
.. nonce: O1tURk
|
||||
.. section: Windows
|
||||
|
||||
:c:func:`PyCMethod_New` is now present in ``python3.lib``.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 41837
|
||||
.. date: 2021-02-28-22-49-46
|
||||
.. nonce: 9fqyXC
|
||||
.. section: macOS
|
||||
|
||||
Update macOS installer build to use OpenSSL 1.1.1j.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 43283
|
||||
.. date: 2021-02-21-16-30-10
|
||||
.. nonce: DLBwYn
|
||||
.. section: IDLE
|
||||
|
||||
Document why printing to IDLE's Shell is often slower than printing to a
|
||||
system terminal and that it can be made faster by pre-formatting a single
|
||||
string before printing.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 43278
|
||||
.. date: 2021-02-21-15-30-38
|
||||
.. nonce: DMPaWH
|
||||
.. section: C API
|
||||
|
||||
Always put compiler and system information on the first line of the REPL
|
||||
welcome message.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 43270
|
||||
.. date: 2021-02-19-14-28-26
|
||||
.. nonce: UKx4XN
|
||||
.. section: C API
|
||||
|
||||
Remove the private ``_PyErr_OCCURRED()`` macro: use the public
|
||||
:c:func:`PyErr_Occurred` function instead.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 35134
|
||||
.. date: 2021-02-18-18-46-42
|
||||
.. nonce: dFpEDT
|
||||
.. section: C API
|
||||
|
||||
Move odictobject.h, parser_interface.h, picklebufobject.h, pydebug.h, and
|
||||
pyfpe.h into the cpython/ directory. They must not be included directly, as
|
||||
they are already included by Python.h: :ref:`Include Files <api-includes>`.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 35134
|
||||
.. date: 2021-02-17-18-51-26
|
||||
.. nonce: YoQdk8
|
||||
.. section: C API
|
||||
|
||||
Move pyarena.h, pyctype.h, and pytime.h into the cpython/ directory. They
|
||||
must not be included directly, as they are already included by Python.h:
|
||||
:ref:`Include Files <api-includes>`.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 40170
|
||||
.. date: 2021-02-16-22-29-39
|
||||
.. nonce: ahHmOo
|
||||
.. section: C API
|
||||
|
||||
:c:func:`PyExceptionClass_Name` is now always declared as a function, in
|
||||
order to hide implementation details. The macro accessed
|
||||
:c:member:`PyTypeObject.tp_name` directly. Patch by Erlend E. Aasland.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 43239
|
||||
.. date: 2021-02-16-17-30-16
|
||||
.. nonce: FQqOGz
|
||||
.. section: C API
|
||||
|
||||
The :c:func:`PyCFunction_New` function is now exported in the ABI when
|
||||
compiled with ``-fvisibility=hidden``.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 40170
|
||||
.. date: 2021-02-15-15-06-43
|
||||
.. nonce: ZYeSii
|
||||
.. section: C API
|
||||
|
||||
:c:func:`PyIter_Check` is now always declared as a function, in order to
|
||||
hide implementation details. The macro accessed
|
||||
:c:member:`PyTypeObject.tp_iternext` directly. Patch by Erlend E. Aasland.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 40170
|
||||
.. date: 2021-02-15-13-41-14
|
||||
.. nonce: r2FAtl
|
||||
.. section: C API
|
||||
|
||||
Convert :c:func:`PyDescr_IsData` macro to a function to hide implementation
|
||||
details: The macro accessed :c:member:`PyTypeObject.tp_descr_set` directly.
|
||||
Patch by Erlend E. Aasland.
|
||||
|
||||
..
|
||||
|
||||
.. bpo: 43181
|
||||
.. date: 2021-02-11-11-37-14
|
||||
.. nonce: ydv33S
|
||||
.. section: C API
|
||||
|
||||
Convert :c:func:`PyObject_TypeCheck` macro to a static inline function.
|
||||
Patch by Erlend E. Aasland.
|
||||
|
|
@ -1,2 +0,0 @@
|
|||
Add the "regen-frozen" makefile target that regenerates the code for the
|
||||
frozen ``__hello__`` module.
|
||||
|
|
@ -1,7 +0,0 @@
|
|||
Make configure script use pkg-config to detect the location of Tcl/Tk
|
||||
headers and libraries, used to build tkinter.
|
||||
|
||||
On macOS, a Tcl/Tk configuration provided by pkg-config will be preferred
|
||||
over Tcl/Tk frameworks installed in ``/{System/,}Library/Frameworks``.
|
||||
If both exist and the latter is preferred, the appropriate
|
||||
``--with-tcltk-*`` configuration options need to be explicitly set.
|
||||
|
|
@ -1,2 +0,0 @@
|
|||
The configure script can now use *libedit* instead of *readline* with the
|
||||
command line option ``--with-readline=editline``.
|
||||
|
|
@ -1,3 +0,0 @@
|
|||
Add a new configure ``--without-static-libpython`` option to not build the
|
||||
``libpythonMAJOR.MINOR.a`` static library and not install the ``python.o``
|
||||
object file.
|
||||
|
|
@ -1 +0,0 @@
|
|||
Windows build now uses ``/utf-8`` compiler option.
|
||||
|
|
@ -1,2 +0,0 @@
|
|||
Convert :c:func:`PyObject_TypeCheck` macro to a static inline function. Patch by
|
||||
Erlend E. Aasland.
|
||||
|
|
@ -1,3 +0,0 @@
|
|||
Convert :c:func:`PyDescr_IsData` macro to a function to hide implementation
|
||||
details: The macro accessed :c:member:`PyTypeObject.tp_descr_set` directly.
|
||||
Patch by Erlend E. Aasland.
|
||||
|
|
@ -1,3 +0,0 @@
|
|||
:c:func:`PyIter_Check` is now always declared as a function, in order to hide implementation
|
||||
details. The macro accessed :c:member:`PyTypeObject.tp_iternext` directly.
|
||||
Patch by Erlend E. Aasland.
|
||||
|
|
@ -1,2 +0,0 @@
|
|||
The :c:func:`PyCFunction_New` function is now exported in the ABI when
|
||||
compiled with ``-fvisibility=hidden``.
|
||||
|
|
@ -1,3 +0,0 @@
|
|||
:c:func:`PyExceptionClass_Name` is now always declared as a function, in
|
||||
order to hide implementation details. The macro accessed
|
||||
:c:member:`PyTypeObject.tp_name` directly. Patch by Erlend E. Aasland.
|
||||
|
|
@ -1,3 +0,0 @@
|
|||
Move pyarena.h, pyctype.h, and pytime.h into the cpython/ directory. They
|
||||
must not be included directly, as they are already included by Python.h:
|
||||
:ref:`Include Files <api-includes>`.
|
||||
|
|
@ -1,3 +0,0 @@
|
|||
Move odictobject.h, parser_interface.h, picklebufobject.h, pydebug.h, and
|
||||
pyfpe.h into the cpython/ directory. They must not be included directly, as
|
||||
they are already included by Python.h: :ref:`Include Files <api-includes>`.
|
||||
|
|
@ -1,2 +0,0 @@
|
|||
Remove the private ``_PyErr_OCCURRED()`` macro: use the public
|
||||
:c:func:`PyErr_Occurred` function instead.
|
||||
|
|
@ -1 +0,0 @@
|
|||
Always put compiler and system information on the first line of the REPL welcome message.
|
||||
|
|
@ -1 +0,0 @@
|
|||
If :func:`object.__ipow__` returns :const:`NotImplemented`, the operator will correctly fall back to :func:`object.__pow__` and :func:`object.__rpow__` as expected.
|
||||
|
|
@ -1 +0,0 @@
|
|||
In the :class:`concurrent.futures.ProcessPoolExecutor`, validate that :func:`multiprocess.synchronize` is available on a given platform and rely on that check in the :mod:`concurrent.futures` test suite so we can run tests that are unrelated to :class:`ProcessPoolExecutor` on those platforms.
|
||||
|
|
@ -1 +0,0 @@
|
|||
Implement :pep:`634` (structural pattern matching). Patch by Brandt Bucher.
|
||||
|
|
@ -1 +0,0 @@
|
|||
Substring search functions such as ``str1 in str2`` and ``str2.find(str1)`` now sometimes use the "Two-Way" string comparison algorithm to avoid quadratic behavior on long strings.
|
||||
|
|
@ -1 +0,0 @@
|
|||
Make the compiler merges same co_code and co_linetable objects in a module like already did for co_consts.
|
||||
|
|
@ -1,2 +0,0 @@
|
|||
Simple calls to ``type(object)`` are now faster due to the
|
||||
``vectorcall`` calling convention. Patch by Dennis Sweeney.
|
||||
|
|
@ -1,8 +0,0 @@
|
|||
:mod:`readline`: Explicitly disable bracketed paste in the interactive
|
||||
interpreter, even if it's set in the inputrc, is enabled by default (eg GNU
|
||||
Readline 8.1), or a user calls ``readline.read_init_file()``. The Python REPL
|
||||
has not implemented bracketed paste support. Also, bracketed mode writes the
|
||||
``"\x1b[?2004h"`` escape sequence into stdout which causes test failures in
|
||||
applications that don't support it. It can still be explicitly enabled by
|
||||
calling ``readline.parse_and_bind("set enable-bracketed-paste on")``. Patch by
|
||||
Dustin Rodrigues.
|
||||
|
|
@ -1,2 +0,0 @@
|
|||
Fixed an incorrect :exc:`SyntaxError` message for missing comma in literals.
|
||||
Patch by Pablo Galindo.
|
||||
|
|
@ -1,2 +0,0 @@
|
|||
Improve the error message in the parser for exception groups without
|
||||
parentheses. Patch by Pablo Galindo.
|
||||
|
|
@ -1,3 +0,0 @@
|
|||
Functions have a new ``__builtins__`` attribute which is used to look for
|
||||
builtin symbols when a function is executed, instead of looking into
|
||||
``__globals__['__builtins__']``. Patch by Mark Shannon and Victor Stinner.
|
||||
|
|
@ -1,7 +0,0 @@
|
|||
The :data:`types.FunctionType` constructor now inherits the current builtins if
|
||||
the *globals* dictionary has no ``"__builtins__"`` key, rather than using
|
||||
``{"None": None}`` as builtins: same behavior as :func:`eval` and :func:`exec`
|
||||
functions. Defining a function with ``def function(...): ...`` in Python is
|
||||
not affected, globals cannot be overriden with this syntax: it also inherits
|
||||
the current builtins.
|
||||
Patch by Victor Stinner.
|
||||
|
|
@ -1,3 +0,0 @@
|
|||
Add a new :c:func:`PySet_CheckExact` function to the C-API to check if an
|
||||
object is an instance of :class:`set` but not an instance of a subtype.
|
||||
Patch by Pablo Galindo.
|
||||
|
|
@ -1,2 +0,0 @@
|
|||
``PyArg_Parse*()`` functions now emits ``DeprecationWarning`` when ``u`` or
|
||||
``Z`` format is used. See :pep:`623` for detail.
|
||||
|
|
@ -1,2 +0,0 @@
|
|||
Fix ``SystemError`` raised when ``PyArg_Parse*()`` is used with ``#`` but
|
||||
without ``PY_SSIZE_T_CLEAN`` defined.
|
||||
|
|
@ -1,2 +0,0 @@
|
|||
Update some deprecated unicode APIs which are documented as "will be removed
|
||||
in 4.0" to "3.12". See :pep:`623` for detail.
|
||||
|
|
@ -1,2 +0,0 @@
|
|||
Clarify that 'yield from <expr>' works with any iterable, not just
|
||||
iterators.
|
||||
|
|
@ -1,3 +0,0 @@
|
|||
Document why printing to IDLE's Shell is often slower than printing to a
|
||||
system terminal and that it can be made faster by pre-formatting a single
|
||||
string before printing.
|
||||
|
|
@ -1 +0,0 @@
|
|||
In ctypes, now packed bitfields are calculated properly and the first item of packed bitfields is now shrank correctly.
|
||||
|
|
@ -1,3 +0,0 @@
|
|||
Make the pure Python implementation of :mod:`xml.etree.ElementTree` behave
|
||||
the same as the C implementation (:mod:`_elementree`) regarding default
|
||||
attribute values (by not setting ``specified_attributes=1``).
|
||||
|
|
@ -1 +0,0 @@
|
|||
Adds :data:`resource.RLIMIT_KQUEUES` constant from FreeBSD to the :mod:`resource` module.
|
||||
|
|
@ -1,2 +0,0 @@
|
|||
Added :data:`~os.O_EVTONLY`, :data:`~os.O_FSYNC`, :data:`~os.O_SYMLINK`
|
||||
and :data:`~os.O_NOFOLLOW_ANY` for macOS. Patch by Dong-hee Na.
|
||||
|
|
@ -1,2 +0,0 @@
|
|||
The namedtuple __new__ method had its __builtins__ set to None instead
|
||||
of an actual dictionary. This created problems for introspection tools.
|
||||
|
|
@ -1 +0,0 @@
|
|||
Fix recent regression in None argument handling in :mod:`~traceback` module functions.
|
||||
|
|
@ -1,2 +0,0 @@
|
|||
deprecate unsupported ability to access enum members as attributes of other
|
||||
enum members
|
||||
|
|
@ -1,2 +0,0 @@
|
|||
Fix a bug in :mod:`codeop` that was causing it to not ask for more input
|
||||
when multi-line snippets have unclosed parentheses. Patch by Pablo Galindo
|
||||
|
|
@ -1,4 +0,0 @@
|
|||
The readline module now passes its tests when built directly against
|
||||
libedit. Existing irreconcilable API differences remain in
|
||||
:func:`readline.get_begidx` and :func:`readline.get_endidx` behavior based
|
||||
on libreadline vs libedit use.
|
||||
|
|
@ -1,3 +0,0 @@
|
|||
Fix segfault in :meth:`sqlite3.Connection.backup` if no argument was
|
||||
provided. The regression was introduced by GH-23838. Patch by
|
||||
Erlend E. Aasland.
|
||||
|
|
@ -1,2 +0,0 @@
|
|||
Improve :mod:`sqlite3` error handling: ``sqlite3_column_name()`` failures
|
||||
now result in :exc:`MemoryError`. Patch by Erlend E. Aasland.
|
||||
|
|
@ -1,2 +0,0 @@
|
|||
Prevent needless allocation of :mod:`sqlite3` aggregate function context
|
||||
when no rows match an aggregate query. Patch by Erlend E. Aasland.
|
||||
|
|
@ -1,2 +0,0 @@
|
|||
Fix TextIOWrapper can not flush internal buffer forever after very large
|
||||
text is written.
|
||||
|
|
@ -1 +0,0 @@
|
|||
Handle None in single-arg versions of :func:`~traceback.print_exception` and :func:`~traceback.format_exception`.
|
||||
|
|
@ -1,3 +0,0 @@
|
|||
Set the chunk size for the ``gzip`` module main function to
|
||||
io.DEFAULT_BUFFER_SIZE. This is slightly faster than the 1024 bytes constant
|
||||
that was used previously.
|
||||
|
|
@ -1,3 +0,0 @@
|
|||
The ``python -m gzip`` command line application now properly fails when
|
||||
detecting an unsupported extension. It exits with a non-zero exit code and
|
||||
prints an error message to stderr.
|
||||
|
|
@ -1 +0,0 @@
|
|||
Fix web cache poisoning vulnerability by defaulting the query args separator to ``&``, and allowing the user to choose a custom separator.
|
||||
|
|
@ -1,2 +0,0 @@
|
|||
Fix test_importlib to correctly skip Unicode file tests if the fileystem
|
||||
does not support them.
|
||||
|
|
@ -1 +0,0 @@
|
|||
:c:func:`PyCMethod_New` is now present in ``python3.lib``.
|
||||
|
|
@ -1 +0,0 @@
|
|||
Update macOS installer build to use OpenSSL 1.1.1j.
|
||||
|
|
@ -1,4 +1,4 @@
|
|||
This is Python version 3.10.0 alpha 5
|
||||
This is Python version 3.10.0 alpha 6
|
||||
=====================================
|
||||
|
||||
.. image:: https://travis-ci.com/python/cpython.svg?branch=master
|
||||
|
|
|
|||
Loading…
Reference in New Issue