token — Constants used with Python parse trees Source code: Lib/token.py This module provides constants which represent the numeric values of leaf nodes of the parse tree (terminal tokens). Refer to the file Grammar/Grammar in the Python distribution for the definitions of the names in the context of the language grammar. The specific numeric values which the names map to may change between Python versions. The module also provides a mapping from numeric codes to names and some functions. The functions mirror definitions in the Python C header files.  
token.tok_name  
Dictionary mapping the numeric values of the constants defined in this module back to name strings, allowing more human-readable representation of parse trees to 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 if x 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 value for "(". 
  
token.RPAR  
Token value for ")". 
  
token.LSQB  
Token value for "[". 
  
token.RSQB  
Token value for "]". 
  
token.COLON  
Token value for ":". 
  
token.COMMA  
Token value for ",". 
  
token.SEMI  
Token value for ";". 
  
token.PLUS  
Token value for "+". 
  
token.MINUS  
Token value for "-". 
  
token.STAR  
Token value for "*". 
  
token.SLASH  
Token value for "/". 
  
token.VBAR  
Token value for "|". 
  
token.AMPER  
Token value for "&". 
  
token.LESS  
Token value for "<". 
  
token.GREATER  
Token value for ">". 
  
token.EQUAL  
Token value for "=". 
  
token.DOT  
Token value for ".". 
  
token.PERCENT  
Token value for "%". 
  
token.LBRACE  
Token value for "{". 
  
token.RBRACE  
Token value for "}". 
  
token.EQEQUAL  
Token value for "==". 
  
token.NOTEQUAL  
Token value for "!=". 
  
token.LESSEQUAL  
Token value for "<=". 
  
token.GREATEREQUAL  
Token value for ">=". 
  
token.TILDE  
Token value for "~". 
  
token.CIRCUMFLEX  
Token value for "^". 
  
token.LEFTSHIFT  
Token value for "<<". 
  
token.RIGHTSHIFT  
Token value for ">>". 
  
token.DOUBLESTAR  
Token value for "**". 
  
token.PLUSEQUAL  
Token value for "+=". 
  
token.MINEQUAL  
Token value for "-=". 
  
token.STAREQUAL  
Token value for "*=". 
  
token.SLASHEQUAL  
Token value for "/=". 
  
token.PERCENTEQUAL  
Token value for "%=". 
  
token.AMPEREQUAL  
Token value for "&=". 
  
token.VBAREQUAL  
Token value for "|=". 
  
token.CIRCUMFLEXEQUAL  
Token value for "^=". 
  
token.LEFTSHIFTEQUAL  
Token value for "<<=". 
  
token.RIGHTSHIFTEQUAL  
Token value for ">>=". 
  
token.DOUBLESTAREQUAL  
Token value for "**=". 
  
token.DOUBLESLASH  
Token value for "//". 
  
token.DOUBLESLASHEQUAL  
Token value for "//=". 
  
token.AT  
Token value for "@". 
  
token.ATEQUAL  
Token value for "@=". 
  
token.RARROW  
Token value for "->". 
  
token.ELLIPSIS  
Token value for "...". 
  
token.COLONEQUAL  
Token value for ":=". 
  
token.OP 
  
token.AWAIT 
  
token.ASYNC 
  
token.TYPE_IGNORE 
  
token.TYPE_COMMENT 
  
token.ERRORTOKEN 
  
token.N_TOKENS 
  
token.NT_OFFSET 
 The following token type values aren’t used by the C tokenizer but are needed for the tokenize module.  
token.COMMENT  
Token value used to indicate a comment. 
  
token.NL  
Token value used to indicate a non-terminating newline. The NEWLINE token indicates the end of a logical line of Python code; NL tokens are generated when a logical line of code is continued over multiple physical lines. 
  
token.ENCODING  
Token value that indicates the encoding used to decode the source bytes into text. The first token returned by tokenize.tokenize() will always be an ENCODING token. 
  
token.TYPE_COMMENT  
Token value indicating that a type comment was recognized. Such tokens are only produced when ast.parse() is invoked with type_comments=True. 
  Changed in version 3.5: Added AWAIT and ASYNC tokens.   Changed in version 3.7: Added COMMENT, NL and ENCODING tokens.   Changed in version 3.7: Removed AWAIT and ASYNC tokens. “async” and “await” are now tokenized as NAME tokens.   Changed in version 3.8: Added TYPE_COMMENT, TYPE_IGNORE, COLONEQUAL. Added AWAIT and ASYNC tokens back (they’re needed to support parsing older Python versions for ast.parse() with feature_version set to 6 or lower).