df reanme columns 1

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

Here is what the above code is Doing:
1. Rename the column ‘A’ to ‘a’.
2. Rename the index ‘ONE’ to ‘one’.
3. Make the changes inplace.

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