Subtract an year from a datetime column in pandas

Question

I have a datetime column as below -

>>> df[\'ACC_DATE\'].head(2)
538   2006-04-07
550   2006-04-12
Name: ACC_DATE, dtype: datetime64[ns]
         


        

Answer 1

Use DateOffset:

df["NEW_DATE"] = df["ACC_DATE"] - pd.offsets.DateOffset(years=1)
print (df)
        ACC_DATE   NEW_DATE
index                      
538   2006-04-07 2005-04-07
550   2006-04-12 2005-04-12