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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 filter_creation_date(groups, start, end):
 """Filter log groups by their creation date. Also sets group specific value for start to the minimum of creation date or start. """

    results = []
    for g in groups:
        created = datetime.fromtimestamp(g['creationTime'] / 1000.0)
        if created > end:
            continue
        if created > start:
            g['exportStart'] = created
        else:
            g['exportStart'] = start
        results.append(g)
    return results