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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 utc_to_localtime( date_str, fmt="%Y-%m-%d %H:%M:%S", input_fmt="%Y-%m-%dT%H:%M:%SZ"):
 """ Convert UTC to localtime Reference: - (1) http://www.openarchives.org/OAI/openarchivesprotocol.html#Dates - (2) http://www.w3.org/TR/NOTE-datetime This function works only with dates complying with the "Complete date plus hours, minutes and seconds" profile of ISO 8601 defined by (2), and linked from (1). Eg: 1994-11-05T13:15:30Z """

    date_struct = datetime.strptime(date_str, input_fmt)
    date_struct += timedelta(hours=get_dst(date_struct))
    date_struct -= timedelta(seconds=time.timezone)
    return strftime(fmt, date_struct)