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python - Convert to UTC Timestamp

//parses some string into that format.
datetime1 = datetime.strptime(somestring, "%Y-%m-%dT%H:%M:%S")

//gets the seconds from the above date.
timestamp1 = time.mktime(datetime1.timetuple())

//adds milliseconds to the above seconds.
timeInMillis = int(timestamp1) * 1000

How do I (at any point in that code) turn the date into UTC format? I've been ploughing through the API for what seems like a century and cannot find anything that I can get working. Can anyone help? It's currently turning it into Eastern time i believe (however I'm in GMT but want UTC).

EDIT: I gave the answer to the guy with the closest to what I finally found out.

datetime1 = datetime.strptime(somestring, someformat)
timeInSeconds = calendar.timegm(datetime1.utctimetuple())
timeInMillis = timeInSeconds * 1000

:)

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datetime.utcfromtimestamp is probably what you're looking for:

>>> timestamp1 = time.mktime(datetime.now().timetuple())
>>> timestamp1
1256049553.0
>>> datetime.utcfromtimestamp(timestamp1)
datetime.datetime(2009, 10, 20, 14, 39, 13)

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