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annotate python/epoch2date.py @ 929:7c4be71a560b default tip
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| author | Jeff Hammel <k0scist@gmail.com> |
|---|---|
| date | Mon, 20 Oct 2025 15:22:19 -0700 |
| parents | 7c4ee496794c |
| children |
| rev | line source |
|---|---|
| 636 | 1 #!/usr/bin/env python |
| 2 # -*- coding: utf-8 -*- | |
| 3 | |
| 667 | 4 """ |
| 5 conversion between epoch and dates | |
| 6 | |
| 7 https://docs.python.org/2/library/time.html | |
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note to self about fun tzinfo to fix in a year
Jeff Hammel <k0scist@gmail.com>
parents:
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8 https://docs.python.org/2/library/datetime.html |
| 667 | 9 """ |
| 10 | |
| 669 | 11 # TODO: tz info |
| 12 #http://bugs.python.org/issue7229 | |
| 13 # http://stackoverflow.com/questions/13218506/how-to-get-system-timezone-setting-and-pass-it-to-pytz-timezone | |
| 14 | |
| 15 | |
| 636 | 16 import argparse |
| 17 import datetime | |
| 18 import os | |
| 19 import subprocess | |
| 20 import sys | |
| 21 import time | |
| 22 | |
| 673 | 23 try: |
| 24 # use dateutil parser if available | |
| 25 from dateutil.parser import parse as parse_date | |
| 26 except ImportError: | |
| 27 parse_date = None | |
| 28 | |
| 29 | |
| 636 | 30 def main(args=sys.argv[1:]): |
| 665 | 31 """CLI""" |
| 636 | 32 |
| 665 | 33 # parse command line |
| 636 | 34 parser = argparse.ArgumentParser(description=__doc__) |
| 665 | 35 parser.add_argument('seconds_since_epoch', |
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allow multiple date ranges and display of UTC only
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36 type=float, nargs='*', default=time.time(), |
| 665 | 37 help="seconds since epoch input [DEFAULT: %(default)s]") |
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Jeff Hammel <k0scist@gmail.com>
parents:
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38 parser.add_argument('--utc', dest='display_utc', |
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1e1bed921c08
allow multiple date ranges and display of UTC only
Jeff Hammel <k0scist@gmail.com>
parents:
673
diff
changeset
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39 action='store_true', default=False, |
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1e1bed921c08
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Jeff Hammel <k0scist@gmail.com>
parents:
673
diff
changeset
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40 help="display UTC time only") |
| 636 | 41 options = parser.parse_args(args) |
| 42 | |
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Jeff Hammel <k0scist@gmail.com>
parents:
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diff
changeset
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43 if isinstance(options.seconds_since_epoch, float): |
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1e1bed921c08
allow multiple date ranges and display of UTC only
Jeff Hammel <k0scist@gmail.com>
parents:
673
diff
changeset
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44 options.seconds_since_epoch = [ options.seconds_since_epoch ] |
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1e1bed921c08
allow multiple date ranges and display of UTC only
Jeff Hammel <k0scist@gmail.com>
parents:
673
diff
changeset
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45 |
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Jeff Hammel <k0scist@gmail.com>
parents:
673
diff
changeset
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46 for s in options.seconds_since_epoch: |
| 665 | 47 |
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Jeff Hammel <k0scist@gmail.com>
parents:
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diff
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48 # produce a datetime |
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parents:
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49 dt = datetime.datetime.fromtimestamp(s) |
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Jeff Hammel <k0scist@gmail.com>
parents:
673
diff
changeset
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50 dt2 = datetime.datetime.utcfromtimestamp(s) |
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1e1bed921c08
allow multiple date ranges and display of UTC only
Jeff Hammel <k0scist@gmail.com>
parents:
673
diff
changeset
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51 |
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Jeff Hammel <k0scist@gmail.com>
parents:
673
diff
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52 # output |
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Jeff Hammel <k0scist@gmail.com>
parents:
673
diff
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53 if not options.display_utc: |
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1e1bed921c08
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Jeff Hammel <k0scist@gmail.com>
parents:
673
diff
changeset
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54 print ("{} seconds since epoch".format(s)) |
| 719 | 55 if time.daylight and time.localtime(s).tm_isdst: |
| 56 tz_index = 1 | |
| 57 else: | |
| 58 tz_index = 0 | |
| 59 print ("{} {}".format(dt, time.tzname[tz_index])) | |
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1e1bed921c08
allow multiple date ranges and display of UTC only
Jeff Hammel <k0scist@gmail.com>
parents:
673
diff
changeset
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60 print ("{} UTC".format(dt2)) |
| 636 | 61 |
| 62 if __name__ == '__main__': | |
| 63 main() |