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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 clean_time(time_string):
 """Return a datetime from the Amazon-provided datetime string"""

    # Get a timezone-aware datetime object from the string
    time = dateutil.parser.parse(time_string)
    if not settings.USE_TZ:
        # If timezone support is not active, convert the time to UTC and
        # remove the timezone field
        time = time.astimezone(timezone.utc).replace(tzinfo=None)
    return time