Subtract a Series from a DataFrame while keeping the DataFrame struct intact

Question

How can I subtract a Series from a DataFrame, while keeping the DataFrame struct intact?

df = pd.DataFrame(np.zeros((5,3)))
s = pd.Series(np.ones(5))

df - s         


        

Answer 1

I'll throw in an example that modifies a subset of the a DataFrame

df = pd.DataFrame(np.arange(20).reshape((2,10)),columns=list('abcdefghjk'))

>>> df
    a   b   c   d   e   f   g   h   j   k
0   0   1   2   3   4   5   6   7   8   9
1  10  11  12  13  14  15  16  17  18  19

# Series to be subtracted    
dif = df['g'] - df['h']

>>> dif
0   -1
1   -1
dtype: int32

# subtract the Series from columns 'g','h','j','k'
df.loc[:,'g':] = df.loc[:,'g':].subtract(dif,axis='rows')
#df.loc[:,'g':] = df.loc[:,'g':].subtract(dif,axis=0)

>>> df
    a   b   c   d   e   f   g   h   j   k
0   0   1   2   3   4   5   7   8   9  10
1  10  11  12  13  14  15  17  18  19  20