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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 get_disk_quota(username, machine_name=None):
 """ Returns disk quota for username in KB """


    try:
        ua = Account.objects.get(
            username=username,
            date_deleted__isnull=True)
    except Account.DoesNotExist:
        return 'Account not found'

    result = ua.get_disk_quota()
    if result is None:
        return False

    return result * 1048576