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Constants used with Python parse trees
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Constants representing terminal nodes of the parse tree.

This manual section was written by Fred L. Drake, Jr. <fdrake@acm.org>.
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.

This module also provides one data object and some functions.  The
functions mirror definitions in the Python C header files.

`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.

`ISTERMINAL(x)'
     Return true for terminal token values.

`ISNONTERMINAL(x)'
     Return true for non-terminal token values.

`ISEOF(x)'
     Return true if X is the marker indicating the end of input.

See also:
     Note: parser The second example for the `parser' module shows
     how to use the `symbol' module.