Create and execute simple grammars
copied from cf-staging / pyparsingconda install conda-forge::pyparsing
conda install conda-forge/label/cf201901::pyparsing
conda install conda-forge/label/cf202003::pyparsing
conda install conda-forge/label/gcc7::pyparsing
The pyparsing module is an alternative approach to creating and executing simple grammars, vs. the traditional lex/yacc approach, or the use of regular expressions. The pyparsing module provides a library of classes that client code uses to construct the grammar directly in Python code.