| Georg Brandl | 116aa62 | 2007-08-15 14:28:22 +0000 | [diff] [blame] | 1 | :mod:`symbol` --- Constants used with Python parse trees |
| 2 | ======================================================== |
| 3 | |
| 4 | .. module:: symbol |
| 5 | :synopsis: Constants representing internal nodes of the parse tree. |
| 6 | .. sectionauthor:: Fred L. Drake, Jr. <fdrake@acm.org> |
| 7 | |
| Raymond Hettinger | a199368 | 2011-01-27 01:20:32 +0000 | [diff] [blame] | 8 | **Source code:** :source:`Lib/symbol.py` |
| 9 | |
| 10 | -------------- |
| Georg Brandl | 116aa62 | 2007-08-15 14:28:22 +0000 | [diff] [blame] | 11 | |
| 12 | This module provides constants which represent the numeric values of internal |
| 13 | nodes of the parse tree. Unlike most Python constants, these use lower-case |
| 14 | names. Refer to the file :file:`Grammar/Grammar` in the Python distribution for |
| 15 | the definitions of the names in the context of the language grammar. The |
| 16 | specific numeric values which the names map to may change between Python |
| 17 | versions. |
| 18 | |
| 19 | This module also provides one additional data object: |
| 20 | |
| 21 | |
| 22 | .. data:: sym_name |
| 23 | |
| 24 | Dictionary mapping the numeric values of the constants defined in this module |
| 25 | back to name strings, allowing more human-readable representation of parse trees |
| 26 | to be generated. |