Package spade :: Module pyparsing :: Class Optional
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Class Optional

source code


Optional matching of the given expression. A default return string can also be specified, if the optional expression is not found.

Instance Methods [hide private]
 
__init__(self, exprs, default=None)
x.__init__(...) initializes x; see help(type(x)) for signature
source code
 
parseImpl(self, instring, loc, doActions=True) source code
 
__str__(self)
str(x)
source code

Inherited from ParseElementEnhance: checkRecursion, ignore, leaveWhitespace, streamline, validate

Inherited from ParserElement: __add__, __and__, __invert__, __or__, __radd__, __rand__, __repr__, __ror__, __rxor__, __xor__, copy, parse, parseFile, parseString, parseWithTabs, postParse, preParse, scanString, setDebug, setDebugActions, setName, setParseAction, setResultsName, setWhitespaceChars, skipIgnorables, suppress, transformString, tryParse

Inherited from object: __delattr__, __format__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __setattr__, __sizeof__, __subclasshook__

Static Methods [hide private]

Inherited from ParserElement: setDefaultWhitespaceChars

Class Variables [hide private]
  __slotnames__ = []

Inherited from ParserElement: DEFAULT_WHITE_CHARS

Properties [hide private]

Inherited from object: __class__

Method Details [hide private]

__init__(self, exprs, default=None)
(Constructor)

source code 

x.__init__(...) initializes x; see help(type(x)) for signature

Overrides: object.__init__
(inherited documentation)

parseImpl(self, instring, loc, doActions=True)

source code 
Overrides: ParserElement.parseImpl

__str__(self)
(Informal representation operator)

source code 

str(x)

Overrides: object.__str__
(inherited documentation)