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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 __consistent_isoformat_utc(datetime_val):
 """ Function that does what isoformat does but it actually does the same every time instead of randomly doing different things on some systems and also it represents that time as the equivalent UTC time. """

        isotime = datetime_val.astimezone(pytz.utc).strftime("%Y-%m-%dT%H:%M:%S%z")
        if isotime[-2] != ":":
            isotime = isotime[:-2] + ":" + isotime[-2:]
        return isotime