Ordre de colonne inversée Pandas

import pandas as pd

df = pd.DataFrame({'a':[1,2,3],
                   'b':[4,5,6,],
                   'c':[7,8,9,]})

df_col_reversed = df.loc[:, ::-1] # reverse column order
df_row_reversed = df.loc[::-1, :] # reverse row order
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