Examples

import numpy as np
import pandas as pd

df = pd.DataFrame([('eagle', 'bird', 320.0),
                   ('sparrow', 'bird', 30.0),
                   ('tiger', 'mammal', 92.5),
                   ('fox','mammal', np.nan)],
                  columns=('name', 'class', 'max_speed'))
df

df.pop('class')

0      bird
1      bird
2    mammal
3    mammal
Name: class, dtype: object

df

	name	class	max_speed
0	eagle	bird	320.0
1	sparrow	bird	30.0
2	tiger	mammal	92.5
3	fox	mammal	NaN