(expr)
return Group(locator("locn_start") + expr("value") + locator.copy().leaveWhitespace()("locn_end"))
Helper to decorate a returned token with its starting and ending
    locations in the input string.

    This helper adds the following results names:

     - locn_start = location where matched expression begins
     - locn_end = location where matched expression ends
     - value = the actual parsed results

    Be careful if the input text contains ``<TAB>`` characters, you
    may want to call :class:`ParserElement.parseWithTabs`

    Example::

        wd = Word(alphas)
        for match in locatedExpr(wd).searchString("ljsdf123lksdjjf123lkkjj1222"):
            print(match)

    prints::

        [[0, 'ljsdf', 5]]
        [[8, 'lksdjjf', 15]]
        [[18, 'lkkjj', 23]]
Helper to decorate a returned token with its starting and ending
    locations in the input string.
Helper to decorate a returned token with its starting and ending locations in the input string .
def locatedExpr(expr):
    """Helper to decorate a returned token with its starting and ending
    locations in the input string.

    This helper adds the following results names:

     - locn_start = location where matched expression begins
     - locn_end = location where matched expression ends
     - value = the actual parsed results

    Be careful if the input text contains ``<TAB>`` characters, you
    may want to call :class:`ParserElement.parseWithTabs`

    Example::

        wd = Word(alphas)
        for match in locatedExpr(wd).searchString("ljsdf123lksdjjf123lkkjj1222"):
            print(match)

    prints::

        [[0, 'ljsdf', 5]]
        [[8, 'lksdjjf', 15]]
        [[18, 'lkkjj', 23]]
    """
    locator = Empty().setParseAction(lambda s,l,t: l)
    return Group(locator("locn_start") + expr("value") + locator.copy().leaveWhitespace()("locn_end"))
def locatedExpr ( expr ) : locator = Empty ( ) . setParseAction ( lambda s , l , t : l ) return Group ( locator ( "locn_start" ) + expr ( "value" ) + locator . copy ( ) . leaveWhitespace ( ) ( "locn_end" ) )