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opt
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gsutil
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third_party
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pyparsing
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examples
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/opt/gsutil/third_party/pyparsing/examples
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/opt/gsutil/third_party/pyparsing/examples/indentedGrammarExample.py
# indentedGrammarExample.py # # Copyright (c) 2006,2016 Paul McGuire # # A sample of a pyparsing grammar using indentation for # grouping (like Python does). # # Updated to use indentedBlock helper method. # from pyparsing import * data = """\ def A(z): A1 B = 100 G = A2 A2 A3 B def BB(a,b,c): BB1 def BBA(): bba1 bba2 bba3 C D def spam(x,y): def eggs(z): pass """ stmt = Forward() suite = IndentedBlock(stmt) identifier = Word(alphas, alphanums) funcDecl = ( "def" + identifier + Group("(" + Optional(delimitedList(identifier)) + ")") + ":" ) funcDef = Group(funcDecl + suite) rvalue = Forward() funcCall = Group(identifier + "(" + Optional(delimitedList(rvalue)) + ")") rvalue << (funcCall | identifier | Word(nums)) assignment = Group(identifier + "=" + rvalue) stmt << (funcDef | assignment | identifier) module_body = OneOrMore(stmt) print(data) parseTree = module_body.parseString(data) parseTree.pprint()
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