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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def __pad(strdata):

 """ Pads `strdata` with a Request's callback argument, if specified, or does
 nothing.
 """

    if request.args.get('callback'):
        return "%s(%s);" % (request.args.get('callback'), strdata)
    else:
        return strdata