1# importing pandas module
2import pandas as pd
3# making data frame from csv file
4nba = pd.read_csv("nba.csv")
5
6# replacing na values in college with No college
7nba["College"].fillna("No College", inplace = True)
8# OR
9nba.College.fillna("No College", inplace = True)
10
11print(nba)
1>>> df.fillna(0)
2 A B C D
30 0.0 2.0 0.0 0
41 3.0 4.0 0.0 1
52 0.0 0.0 0.0 5
63 0.0 3.0 0.0 4
7
1When inplace = True , the data is modified in place, which means it will return nothing and the dataframe is now updated. When inplace = False , which is the default, then the operation is performed and it returns a copy of the object. You then need to save it to something.