pandas dataframe change column values by function code example

Example 1: change column name df

>>> df = pd.DataFrame({"A": [1, 2, 3], "B": [4, 5, 6]})
>>> df.rename(columns={"A": "a", "B": "c"})
   a  c
0  1  4
1  2  5
2  3  6

Example 2: replace column values pandas

df['column'] = df['column'].str.replace(',','-')
df

Example 3: df change column names

df.rename(columns={"A": "a", "B": "b", "C": "c"},
errors="raise", inplace=True)

Example 4: replace values of pandas column

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

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Python Example

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