Examples

import numpy as np
import pandas as pd

df = pd.DataFrame({'angles': [0, 3, 4],
                   'degrees': [360, 180, 360]},
                  index=['ellipse', 'right triangle', 'rhombus'])
df

	angles	degrees
ellipse	0	360
right triangle	3	180
rhombus	4	360

Add a scalar with operator version which return the same results:

df.rmod

<bound method _arith_method_FRAME.<locals>.f of                 angles  degrees
ellipse              0      360
right triangle       3      180
rhombus              4      360>