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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 localize_datetime(datetime_obj, timezone_name):
 """Localizes the given UTC-aligned datetime by the given timezone. Arguments --------- datetime_obj : datetime.datetime A datetime object decipting a specific point in time, aligned by UTC. timezone_name: str A string with a name of a timezone. Returns ------- datetime.datetime An datetime object aligned by the given timezone. """

    return datetime_obj.replace(tzinfo=pytz.utc).astimezone(
        pytz.timezone(timezone_name))