https://github.com/python/cpython
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- v3.11.0b1
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- v3.11.0a1
- v3.11.0
- v3.10.9
- v3.10.8
- v3.10.7
- v3.10.6
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- v3.10.3
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- v3.10.14
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- v3.10.1
- v3.10.0rc2
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- v3.10.0
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- v2.7.18
- v2.7.17rc1
- v2.7.17
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Tip revision: 7f193e89698818de5fc60a8667de786036bbef95 authored by Ned Deily on 02 July 2019, 18:51:09 UTC
3.7.4rc2
3.7.4rc2
Tip revision: 7f193e8
PatternGrammar.txt
# Copyright 2006 Google, Inc. All Rights Reserved.
# Licensed to PSF under a Contributor Agreement.
# A grammar to describe tree matching patterns.
# Not shown here:
# - 'TOKEN' stands for any token (leaf node)
# - 'any' stands for any node (leaf or interior)
# With 'any' we can still specify the sub-structure.
# The start symbol is 'Matcher'.
Matcher: Alternatives ENDMARKER
Alternatives: Alternative ('|' Alternative)*
Alternative: (Unit | NegatedUnit)+
Unit: [NAME '='] ( STRING [Repeater]
| NAME [Details] [Repeater]
| '(' Alternatives ')' [Repeater]
| '[' Alternatives ']'
)
NegatedUnit: 'not' (STRING | NAME [Details] | '(' Alternatives ')')
Repeater: '*' | '+' | '{' NUMBER [',' NUMBER] '}'
Details: '<' Alternatives '>'