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[utils] Add datetime_from_str to parse relative time (#221)

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and `datetime_add_months` to accurately add/subtract months

Authored by: colethedj
This commit is contained in:
colethedj
2021-04-06 18:45:15 +12:00
committed by pukkandan
parent c24ce07a84
commit 9e62f283ff
2 changed files with 81 additions and 20 deletions
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15
test/test_utils.py
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@ -23,6 +23,7 @@ from yt_dlp.utils import (
clean_html,
clean_podcast_url,
date_from_str,
datetime_from_str,
DateRange,
detect_exe_version,
determine_ext,
@ -311,8 +312,18 @@ class TestUtil(unittest.TestCase):
self.assertEqual(date_from_str('yesterday'), date_from_str('now-1day'))
self.assertEqual(date_from_str('now+7day'), date_from_str('now+1week'))
self.assertEqual(date_from_str('now+14day'), date_from_str('now+2week'))
self.assertEqual(date_from_str('now+365day'), date_from_str('now+1year'))
self.assertEqual(date_from_str('now+30day'), date_from_str('now+1month'))
self.assertEqual(date_from_str('20200229+365day'), date_from_str('20200229+1year'))
self.assertEqual(date_from_str('20210131+28day'), date_from_str('20210131+1month'))
def test_datetime_from_str(self):
self.assertEqual(datetime_from_str('yesterday', precision='day'), datetime_from_str('now-1day', precision='auto'))
self.assertEqual(datetime_from_str('now+7day', precision='day'), datetime_from_str('now+1week', precision='auto'))
self.assertEqual(datetime_from_str('now+14day', precision='day'), datetime_from_str('now+2week', precision='auto'))
self.assertEqual(datetime_from_str('20200229+365day', precision='day'), datetime_from_str('20200229+1year', precision='auto'))
self.assertEqual(datetime_from_str('20210131+28day', precision='day'), datetime_from_str('20210131+1month', precision='auto'))
self.assertEqual(datetime_from_str('20210131+59day', precision='day'), datetime_from_str('20210131+2month', precision='auto'))
self.assertEqual(datetime_from_str('now+1day', precision='hour'), datetime_from_str('now+24hours', precision='auto'))
self.assertEqual(datetime_from_str('now+23hours', precision='hour'), datetime_from_str('now+23hours', precision='auto'))
def test_daterange(self):
_20century = DateRange("19000101", "20000101")