1>>> df.sort_values(by=['col1'], ascending = False)
2 col1 col2 col3
30 A 2 0
41 A 1 1
52 B 9 9
65 C 4 3
74 D 7 2
83 NaN 8 4
9
1>>> df.sort_values(by=['col1'])
2 col1 col2 col3
30 A 2 0
41 A 1 1
52 B 9 9
65 C 4 3
74 D 7 2
83 NaN 8 4
9