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・ PlWordNet
・ PLX
・ PLX Technology
・ PLXDC1
・ PLXDC2
・ PLXNA2
・ PLXNA3
・ PLXNA4A
・ PLXNB1
・ PLXNB2
・ PLXNB3
・ PLXND1
・ Ply
・ PLY (file format)
・ Ply (game theory)
PLY (Python Lex-Yacc)
・ Ply-split braiding
・ Plyboo
・ Plyg
・ Plying
・ Plyler v. Doe
・ Plym
・ Plym Valley Railway
・ Plymax
・ Plymell, Kansas
・ Plymouth
・ Plymouth & South West Co-operative Society
・ Plymouth (automobile)
・ Plymouth (disambiguation)
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PLY (Python Lex-Yacc) : ウィキペディア英語版
PLY (Python Lex-Yacc)

PLY is a parsing tool written purely in Python. It is basically a re-implementation of Lex and Yacc originally in C-language. It was written by David Beazley. Unlike Lex and Yacc in C which uses LALR parsing technique, PLY uses LR parsing which can incorporate large grammars easily. PLY also has extensive debugging and error reporting facilities.
==History==
David Beazley originally wrote PLY in 2001 for an introductory course on compilers. He created it to aid the students in creating compilers for simple Pascal-like languages.〔http://www.drdobbs.com/web-development/prototyping-interpreters-using-python-le/184405580〕
Since then it has seen many improvements and has come out as one of the popular parsing tools.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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