PLY is an implementation of lex and yacc parsing tools for Python.
Main Features:
- It's implemented entirely in Python.
- It uses LR-parsing which is reasonably efficient and well suited for larger grammars.
- PLY provides most of the standard lex/yacc features including support for empty productions, precedence rules, error recovery, and support for ambiguous grammars.
- PLY is straightforward to use and provides very extensive error checking.
A free drawing library for use with Python 2.7 developed by The GNOME Project
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