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This adds a `feature_version` flag to `ast.parse()` (documented) and `compile()` (hidden) that allow tweaking the parser to support older versions of the grammar. In particular if `feature_version` is 5 or 6, the hacks for the `async` and `await` keyword from PEP 492 are reinstated. (For 7 or higher, these are unconditionally treated as keywords, but they are still special tokens rather than `NAME` tokens that the parser driver recognizes.) https://bugs.python.org/issue35975
67 lines
1.5 KiB
Text
67 lines
1.5 KiB
Text
ENDMARKER
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NAME
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NUMBER
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STRING
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NEWLINE
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INDENT
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DEDENT
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LPAR '('
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RPAR ')'
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LSQB '['
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RSQB ']'
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COLON ':'
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COMMA ','
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SEMI ';'
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PLUS '+'
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MINUS '-'
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STAR '*'
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SLASH '/'
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VBAR '|'
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AMPER '&'
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LESS '<'
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GREATER '>'
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EQUAL '='
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DOT '.'
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PERCENT '%'
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LBRACE '{'
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RBRACE '}'
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EQEQUAL '=='
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NOTEQUAL '!='
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LESSEQUAL '<='
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GREATEREQUAL '>='
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TILDE '~'
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CIRCUMFLEX '^'
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LEFTSHIFT '<<'
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RIGHTSHIFT '>>'
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DOUBLESTAR '**'
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PLUSEQUAL '+='
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MINEQUAL '-='
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STAREQUAL '*='
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SLASHEQUAL '/='
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PERCENTEQUAL '%='
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AMPEREQUAL '&='
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VBAREQUAL '|='
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CIRCUMFLEXEQUAL '^='
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LEFTSHIFTEQUAL '<<='
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RIGHTSHIFTEQUAL '>>='
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DOUBLESTAREQUAL '**='
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DOUBLESLASH '//'
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DOUBLESLASHEQUAL '//='
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AT '@'
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ATEQUAL '@='
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RARROW '->'
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ELLIPSIS '...'
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COLONEQUAL ':='
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OP
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AWAIT
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ASYNC
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TYPE_IGNORE
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TYPE_COMMENT
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ERRORTOKEN
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# These aren't used by the C tokenizer but are needed for tokenize.py
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COMMENT
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NL
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ENCODING
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