>>> df.sort_values(by=['col1'], ascending = False) 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
df.rename(columns={1:'month'},inplace=True) df['month'] = pd.Categorical(df['month'],categories=['December','November','October','September','August','July','June','May','April','March','February','January'],ordered=True) df = df.sort_values('month',ascending=False)
