ascending=False) code example

Example 1: sort dataframe by column

df.sort_values(by='col1', ascending=False)

Example 2: sort df by column

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)