如何在数据框中按月递增日期列？

Question

I have a dataset that has a column named "date_col". date_col has 1000+ dates, and the dates are only: 01/01/2011 and 01/01/2012.

This is what I tried:

table['date_col'] = pd.date_range(start='3/1/2011', 
                                  periods=len(table['date_col']), freq='d') 

How can I easily change the months to be something else than just 01/01?

Answer 1

You can parse the date column into a datetime object so you can manipulate it easily, something like this should work:

from datetime import datetime

date_str = '01/01/2012'
date_format = '%d/%m/%Y'
date = datetime.strptime(date_str, date_format)

# just change the day
date = date.replace(day=2)