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svn+ssh://svn.python.org/python/branches/py3k ................ r74821 | georg.brandl | 2009-09-16 11:42:19 +0200 (Mi, 16 Sep 2009) | 1 line #6885: run python 3 as python3. ................ r74828 | georg.brandl | 2009-09-16 16:23:20 +0200 (Mi, 16 Sep 2009) | 1 line Use true booleans. ................ r74829 | georg.brandl | 2009-09-16 16:24:29 +0200 (Mi, 16 Sep 2009) | 1 line Small PEP8 correction. ................ r74830 | georg.brandl | 2009-09-16 16:36:22 +0200 (Mi, 16 Sep 2009) | 1 line Use true booleans. ................ r74831 | georg.brandl | 2009-09-16 17:54:04 +0200 (Mi, 16 Sep 2009) | 1 line Use true booleans and PEP8 for argdefaults. ................ r74833 | georg.brandl | 2009-09-16 17:58:14 +0200 (Mi, 16 Sep 2009) | 1 line Last round of adapting style of documenting argument default values. ................ r74835 | georg.brandl | 2009-09-16 18:00:31 +0200 (Mi, 16 Sep 2009) | 33 lines Merged revisions 74817-74820,74822-74824 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r74817 | georg.brandl | 2009-09-16 11:05:11 +0200 (Mi, 16 Sep 2009) | 1 line Make deprecation notices as visible as warnings are right now. ........ r74818 | georg.brandl | 2009-09-16 11:23:04 +0200 (Mi, 16 Sep 2009) | 1 line #6880: add reference to classes section in exceptions section, which comes earlier. ........ r74819 | georg.brandl | 2009-09-16 11:24:57 +0200 (Mi, 16 Sep 2009) | 1 line #6876: fix base class constructor invocation in example. ........ r74820 | georg.brandl | 2009-09-16 11:30:48 +0200 (Mi, 16 Sep 2009) | 1 line #6891: comment out dead link to Unicode article. ........ r74822 | georg.brandl | 2009-09-16 12:12:06 +0200 (Mi, 16 Sep 2009) | 1 line #5621: refactor description of how class/instance attributes interact on a.x=a.x+1 or augassign. ........ r74823 | georg.brandl | 2009-09-16 15:06:22 +0200 (Mi, 16 Sep 2009) | 1 line Remove strange trailing commas. ........ r74824 | georg.brandl | 2009-09-16 15:11:06 +0200 (Mi, 16 Sep 2009) | 1 line #6892: fix optparse example involving help option. ........ ................
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1.3 KiB
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46 lines
1.3 KiB
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:mod:`token` --- Constants used with Python parse trees
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=======================================================
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.. module:: token
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:synopsis: Constants representing terminal nodes of the parse tree.
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.. sectionauthor:: Fred L. Drake, Jr. <fdrake@acm.org>
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This module provides constants which represent the numeric values of leaf nodes
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of the parse tree (terminal tokens). Refer to the file :file:`Grammar/Grammar`
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in the Python distribution for the definitions of the names in the context of
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the language grammar. The specific numeric values which the names map to may
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change between Python versions.
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This module also provides one data object and some functions. The functions
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mirror definitions in the Python C header files.
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.. data:: tok_name
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Dictionary mapping the numeric values of the constants defined in this module
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back to name strings, allowing more human-readable representation of parse trees
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to be generated.
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.. function:: ISTERMINAL(x)
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Return true for terminal token values.
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.. function:: ISNONTERMINAL(x)
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Return true for non-terminal token values.
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.. function:: ISEOF(x)
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Return true if *x* is the marker indicating the end of input.
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.. seealso::
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Module :mod:`parser`
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The second example for the :mod:`parser` module shows how to use the
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:mod:`symbol` module.
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