filter pandas dataframe for past x days

Question

I have a dataframe with a date column that I update daily. I\'d like to create a copy of it with just the past 30 day\'s of data.

I tried the following syntax based on

Answer 1

Try this:

import datetime
import pandas as pd 


df[df.the_date_column > datetime.datetime.now() - pd.to_timedelta("30day")]

Update: Edited as suggested by Josh.