How to change the order of DataFrame columns?

Question

I have the following DataFrame (df):

import numpy as np
import pandas as pd

df = pd.DataFrame(np.random.rand(10, 5))

Answer 1

A pretty straightforward solution that worked for me is to use .reindex on df.columns:

df=df[df.columns.reindex(['mean',0,1,2,3,4])[0]]