Python: Figure out local timezone

Question

I want to compare UTC timestamps from a log file with local timestamps. When creating the local datetime object, I use something like:

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Answer 1

Avoiding non-standard module (seems to be a missing method of datetime module):

from datetime import datetime
utcOffset_min = int(round((datetime.now() - datetime.utcnow()).total_seconds())) / 60   # round for taking time twice
utcOffset_h = utcOffset_min / 60
assert(utcOffset_min == utcOffset_h * 60)   # we do not handle 1/2 h timezone offsets

print 'Local time offset is %i h to UTC.' % (utcOffset_h)