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        "author": "William Song",
        "author_email": "songcwzjut@163.com",
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        "classifiers": [
            "Intended Audience :: Science/Research",
            "License :: Public Domain",
            "Natural Language :: English",
            "Operating System :: OS Independent",
            "Programming Language :: Python",
            "Programming Language :: Python :: 3.6",
            "Topic :: Scientific/Engineering :: Mathematics"
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        "description": "Introduction\n=============\n\nAbstract\n----------\nExtension of [pyparsing](https://github.com/pyparsing/pyparsing). You can easily build your own languages. :v:\n\nKeywords\n----------\n* PEG\n* Regular Expressions\n* Parser\n* Formal Grammar\n* Operating Semantics\n\n\n## Awesome Feature:\n\n    1. mixedExpression\n    2. build languages (see example)\n\nRequirements\n-----------\npyparsing\n\n\n\n## Download\n\n`pip install pyparsing_ext`\n\n\n\n## Structure\n\n- core: basic token classes\n- actions: classes for parsing actions\n- expressions: complicated expressions\n- utils: some useful tools\n\nContent\n=========\n\nClasses::\n\n    Tokens:\n    \n    Wordx: powerful Word\n    CharsNot: powerful CharsNotIn\n    PrecededBy: as FollowedBy  (moved to pyparsing)\n    MeanWhile:\n    LinenStart:\n    \n    Actions:\n    BaseAction: Base Class of Actions\n    BifixAction: action for bifix operators such as <x,y>\n    ...\n\n\nFunctions::\n\n```python\nkeyRange(s)\nordRange(s)\nchrRange(s)\nCJK # for matching Chinese Japanese Korean\nenumeratedItems\ntupleExpression # tuple as in python (1,), (), (1,2)...\ndelimitedMatrix # delimitedList with two seps (just call it 2-order list)\n```\n\nExample\n=========\n\n```python\nw = Wordx(lambda x: x in {'a', 'b', 'c', 'd'}) # == Word('abcd')\n\nM = delimitedMatrix(w, ch1=' ', ch2=pp.Regex('\\n+').leaveWhitespace())\np = M.parseString('a b\\n c d')\nprint(p.asList())\n\ns = '''\n[1]hello, world\n[2]hello, kitty\n'''\nprint(enumeratedItems().parseString(s))\n\ncjk = ordRange(0x4E00, 0x9FD5)\ncjk.parseString('\u6211\u7231\u4f60, I love you') # => ['\u6211\u7231\u4f60']\n\ncjk = ordRanges((0x4E00, 0x9FD5, 0, 256))\ncjk.parseString('\u6211\u7231\u4f60 I love you') # => ['\u6211\u7231\u4f60 I love you']\n\nimport pyparsing as pp\ninteger = pp.pyparsing_common.signed_integer\nvarname = pp.pyparsing_common.identifier\n\narithOplist = [('-', 1, pp.opAssoc.RIGHT),\n    (pp.oneOf('* /'), 2, pp.opAssoc.LEFT),\n    (pp.oneOf('+ -'), 2, pp.opAssoc.LEFT)]\n\ndef func(EXP):\n    return pp.Group('<' + EXP + pp.Suppress(',') + EXP +'>')| pp.Group('||' + EXP + '||') | pp.Group('|' + EXP + '|') | pp.Group(IDEN + '(' + pp.delimitedList(EXP) + ')')\nbaseExpr = integer | varname\nEXP = mixedExpression(baseExpr, func=func, opList=arithOplist)\n\na = EXP.parseString('5*g(|-3|)+<4,5> + f(6)')\nprint(a)\n# [[[5, '*', ['g', '(', ['|', ['-', 3], '|'], ')']], '+', ['<', 4, 5, '>'], '+', ['f', '(', 6, ')']]]\n```\n\n\n\n## build your own languages\n\nrun `example1.py` for a simple example\n\noutput:\n```C\nExample 1:\n|-1| -> ('|', '|')(-(1))\nExample 2:\nparse source code:\n \nx=|-1|;  # absolute value\ny=x*2+1;\nif x == 1\n{z=[3.3_]; # the floor value\n}\nprint \"z =\", z;\n \nresult:\nz = 3 \nsee the dictionary of variables:\n{'x': Decimal('1'), 'y': Decimal('3'), 'z': 3}\n```\n\nIn example2.py, we create a programming language, \"Small Python\".\nrun `example2.py` for a complicated example, to parse text files `test.spy` or `test1.py`\n\n`example2.smallpy.cmdline()`  # in mode of command line",
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        "name": "pyparsing-ext",
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        "summary": "A cool tool for parsing. It is an extension of pyparsing. One can build his own programming language with it.",
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