GNU Info

(python2.1-lib.info)symbol

---

Next: token Prev: parser Up: Python Language Services

---

Enter node , (file) or (file)node

Constants used with Python parse trees
======================================

Constants representing internal 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
internal nodes of the parse tree.  Unlike most Python constants, these
use lower-case names.  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 additional data object:

`sym_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.

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