Python : Subtract 1 month from date
Question:
I want subtract 1 month from a date. I’m using relativedelta but this subtract 6 months.
print('the max date : ' , all_data['DT_ANO'].max())
dt_start = all_data['DT_ANO'].max() - relativedelta(month = 1)
print('dt_start : ' , dt_start)
I get this result :
the max date : 2021-08-16 00:00:00
dt_start : 2021-01-16 00:00:00
instead of :
the max date : 2021-08-16 00:00:00
dt_start : 2021-07-16 00:00:00
Answers:
Guessing that relativedelta is a dateutil function, then use
relativedelta(months=1)
If you use month, year, day, … the value will be absolute, if you use months, days, years, the value will be relative.
relativedelta(months=1)
If you use month, year, day, … the value will be absolute, if you use months, days, years, the value will be relative.
I want subtract 1 month from a date. I’m using relativedelta but this subtract 6 months.
print('the max date : ' , all_data['DT_ANO'].max())
dt_start = all_data['DT_ANO'].max() - relativedelta(month = 1)
print('dt_start : ' , dt_start)
I get this result :
the max date : 2021-08-16 00:00:00
dt_start : 2021-01-16 00:00:00
instead of :
the max date : 2021-08-16 00:00:00
dt_start : 2021-07-16 00:00:00
Guessing that relativedelta is a dateutil function, then use
relativedelta(months=1)
If you use month, year, day, … the value will be absolute, if you use months, days, years, the value will be relative.
relativedelta(months=1)
If you use month, year, day, … the value will be absolute, if you use months, days, years, the value will be relative.