replace values with loc pandas code example

Example 1: pandas replace values in column based on condition

In [41]:
df.loc[df['First Season'] > 1990, 'First Season'] = 1
df

Out[41]:
                 Team  First Season  Total Games
0      Dallas Cowboys          1960          894
1       Chicago Bears          1920         1357
2   Green Bay Packers          1921         1339
3      Miami Dolphins          1966          792
4    Baltimore Ravens             1          326
5  San Franciso 49ers          1950         1003

Example 2: replace values of pandas column

df.loc[df['column'] == 'column_value', 'column'] = 'new_column_value'

Example 3: replace one row with another in python

df.loc[(df.Event == 'Dance'),'Event']='Hip-Hop'
df

Example 4: .replace pandas in for loop

df_media_input['MediaChannel'].replace(replacements, inplace=True)