To sum DataFrame rows for given columns with Python Pandas, we can use the sum method.
For instance, we write
df = pd.DataFrame({'a': [1,2,3], 'b': [2,3,4], 'c':['dd','ee','ff'], 'd':[5,9,1]})
df['e'] = df.sum(axis=1)
to call df.sum with axis set to 1 to sum the row values.
It’ll also ignore non numeric columns when doing the sum.