Consecutive 3+ daysoff in Pandas

consecutive_3plus_daysoff.py

series = daysoff.astype(int).to_series()
delta_2days = pd.Timedelta(2, unit='d').to_timedelta64().astype(float)
consecutive_3days = lambda S: abs(S.iloc[0] - S.iloc[-1]) == delta_2days

start = series.iloc[::-1].rolling(3).apply(consecutive_3days)[::-1].fillna(0)
middle = series.rolling(3, center=True).apply(consecutive_3days).fillna(0)
end = series.rolling(3).apply(consecutive_3days).fillna(0)

consecutive_3plus_daysoff = daysoff[(start + middle + end).astype(bool)]  # 期間中の3連休以上