pandas dataframe rename column names code example

Example 1: rename column name pandas dataframe

df.rename(columns={"old_col1": "new_col1", "old_col2": "new_col2"})

Example 2: df change column names

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

Example 3: df reanme columns

df_org = df.copy()
df_org.rename(columns={'A': 'a'}, index={'ONE': 'one'}, inplace=True)
print(df_org)
#         a   B   C
# one    11  12  13
# TWO    21  22  23
# THREE  31  32  33

Example 4: rename column pandas

>>> df.index
RangeIndex(start=0, stop=3, step=1)
>>> df.rename(index=str).index
Index(['0', '1', '2'], dtype='object')

Example 5: change column names pandas

df.columns = ['A','B']