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- # -*- coding: utf-8 -*-
- from __future__ import absolute_import
- import datetime
- def total_seconds(td):
- """Get total seconds for timedelta."""
- return td.total_seconds()
- def is_timestamp(value):
- """Check if value is a valid timestamp."""
- if isinstance(value, bool):
- return False
- if not (
- isinstance(value, int) or isinstance(value, float) or isinstance(value, str)
- ):
- return False
- try:
- float(value)
- return True
- except ValueError:
- return False
- # Credit to https://stackoverflow.com/a/1700069
- def iso_to_gregorian(iso_year, iso_week, iso_day):
- """Converts an ISO week date tuple into a datetime object."""
- if not 1 <= iso_week <= 53:
- raise ValueError("ISO Calendar week value must be between 1-53.")
- if not 1 <= iso_day <= 7:
- raise ValueError("ISO Calendar day value must be between 1-7")
- # The first week of the year always contains 4 Jan.
- fourth_jan = datetime.date(iso_year, 1, 4)
- delta = datetime.timedelta(fourth_jan.isoweekday() - 1)
- year_start = fourth_jan - delta
- gregorian = year_start + datetime.timedelta(days=iso_day - 1, weeks=iso_week - 1)
- return gregorian
- # Python 2.7 / 3.0+ definitions for isstr function.
- try: # pragma: no cover
- basestring
- def isstr(s):
- return isinstance(s, basestring) # noqa: F821
- except NameError: # pragma: no cover
- def isstr(s):
- return isinstance(s, str)
- __all__ = ["total_seconds", "is_timestamp", "isstr", "iso_to_gregorian"]
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