BUG: DatetimeTz shift raises AmbiguousTimeError near DST by sinhrks · Pull Request #13926 · pandas-dev/pandas (original) (raw)

import pandas as pd
s = pd.Series(pd.date_range('2016-11-06', freq='H', periods=10, tz='US/Eastern'))
s.shift(1)
# pytz.exceptions.AmbiguousTimeError: Cannot infer dst time from Timestamp('2016-11-06 01:00:00'), try using the 'ambiguous' argument