ffill

Python Pandas ffill or bffill with multiple condition Question: I have a dataset like below : condition=[None,None,None,’condtion1′,None,None,None,’conditon2′,None,None,None] add_val = [None,None,None,10,None,None,None,20,None,None,None] df=pd.DataFrame({‘event_condition’:condition,’add_col’:add_val}) I want to fillna of add_col in terms of condition. When I meet condition 1 of event_condition, I want to ffill with value of 10 in a separate column called ‘on_condition1’. It should not …