32.5.token — Constants used with Python parse trees¶
Source code:Lib/token.py
This module provides constants which represent the numeric values of leaf nodesof the parse tree (terminal tokens). Refer to the fileGrammar/Grammarin the Python distribution for the definitions of the names in the context ofthe language grammar. The specific numeric values which the names map to maychange between Python versions.
The module also provides a mapping from numeric codes to names and somefunctions. The functions mirror definitions in the Python C header files.
token.tok_name¶Dictionary mapping the numeric values of the constants defined in this moduleback to name strings, allowing more human-readable representation of parse treesto be generated.
token.ISTERMINAL(x)¶Return true for terminal token values.
token.ISNONTERMINAL(x)¶Return true for non-terminal token values.
token.ISEOF(x)¶Return true ifx is the marker indicating the end of input.
The token constants are:
token.ENDMARKER¶token.NAME¶token.NUMBER¶token.STRING¶token.NEWLINE¶token.INDENT¶token.DEDENT¶token.LPAR¶token.RPAR¶token.LSQB¶token.RSQB¶token.COLON¶token.COMMA¶token.SEMI¶token.PLUS¶token.MINUS¶token.STAR¶token.SLASH¶token.VBAR¶token.AMPER¶token.LESS¶token.GREATER¶token.EQUAL¶token.DOT¶token.PERCENT¶token.LBRACE¶token.RBRACE¶token.EQEQUAL¶token.NOTEQUAL¶token.LESSEQUAL¶token.GREATEREQUAL¶token.TILDE¶token.CIRCUMFLEX¶token.LEFTSHIFT¶token.RIGHTSHIFT¶token.DOUBLESTAR¶token.PLUSEQUAL¶token.MINEQUAL¶token.STAREQUAL¶token.SLASHEQUAL¶token.PERCENTEQUAL¶token.AMPEREQUAL¶token.VBAREQUAL¶token.CIRCUMFLEXEQUAL¶token.LEFTSHIFTEQUAL¶token.RIGHTSHIFTEQUAL¶token.DOUBLESTAREQUAL¶token.DOUBLESLASH¶token.DOUBLESLASHEQUAL¶token.AT¶token.ATEQUAL¶token.RARROW¶token.ELLIPSIS¶token.OP¶token.AWAIT¶token.ASYNC¶token.ERRORTOKEN¶token.N_TOKENS¶token.NT_OFFSET¶