fillna with mean pandas

1df.fillna(df.mean(), inplace=True)

1sub2['income'].fillna((sub2['income'].mean()), inplace=True)

1df['column'] = df['column'].fillna(0)

1df.fillna(df.mean())

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)

1df["newColumName"] = df["originalColumnName"].fillna(df["originalColumnName"].mean())