dates.py 1.2 KB

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  1. # Licensed to the Apache Software Foundation (ASF) under one
  2. # or more contributor license agreements. See the NOTICE file
  3. # distributed with this work for additional information
  4. # regarding copyright ownership. The ASF licenses this file
  5. # to you under the Apache License, Version 2.0 (the
  6. # "License"); you may not use this file except in compliance
  7. # with the License. You may obtain a copy of the License at
  8. #
  9. # http://www.apache.org/licenses/LICENSE-2.0
  10. #
  11. # Unless required by applicable law or agreed to in writing,
  12. # software distributed under the License is distributed on an
  13. # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  14. # KIND, either express or implied. See the License for the
  15. # specific language governing permissions and limitations
  16. # under the License.
  17. from datetime import datetime
  18. import pytz
  19. EPOCH = datetime(1970, 1, 1)
  20. def datetime_to_epoch(dttm):
  21. if dttm.tzinfo:
  22. dttm = dttm.replace(tzinfo=pytz.utc)
  23. epoch_with_tz = pytz.utc.localize(EPOCH)
  24. return (dttm - epoch_with_tz).total_seconds() * 1000
  25. return (dttm - EPOCH).total_seconds() * 1000
  26. def now_as_float():
  27. return datetime_to_epoch(datetime.utcnow())