sort_values code example
Example 1: sort dataframe by column
df.sort_values(by='col1', ascending=False)
Example 2: sort_values
>>> df.sort_values(by=['col1'])
col1 col2 col3
0 A 2 0
1 A 1 1
2 B 9 9
5 C 4 3
4 D 7 2
3 NaN 8 4