sort by column index pandas code example

Example 1: sort by index pandas

>>> df = pd.DataFrame([1, 2, 3, 4, 5], index=[100, 29, 234, 1, 150],
...                   columns=['A'])
>>> df.sort_index()
     A
1    4
29   2
100  1
150  5
234  3

Example 2: pandas sort dataframe by index

df.sort_index()