Doc/lib/libsymbol.tex

   1 \section{\module{symbol} ---
   2          Constants used with Python parse trees}
   3
   4 \declaremodule{standard}{symbol}
   5 \modulesynopsis{Constants representing internal nodes of the parse tree.}
   6 \sectionauthor{Fred L. Drake, Jr.}{fdrake@acm.org}
   7
   8
   9 This module provides constants which represent the numeric values of
  10 internal nodes of the parse tree.  Unlike most Python constants, these
  11 use lower-case names.  Refer to the file \file{Grammar/Grammar} in the
  12 Python distribution for the definitions of the names in the context of
  13 the language grammar.  The specific numeric values which the names map
  14 to may change between Python versions.
  15
  16 This module also provides one additional data object:
  17
  18
  19 \begin{datadesc}{sym_name}
  20   Dictionary mapping the numeric values of the constants defined in
  21   this module back to name strings, allowing more human-readable
  22   representation of parse trees to be generated.
  23 \end{datadesc}
  24
  25
  26 \begin{seealso}
  27   \seemodule{parser}{The second example for the \refmodule{parser}
  28                      module shows how to use the \module{symbol}
  29                      module.}
  30 \end{seealso}