Comment remplacer les deux diagonales de DataFrame par 0 en pandas

import pandas as pd 
import numpy as np

df = pd.DataFrame(np.random.randint(1,100, 100).reshape(10, -1))

out = df.where(df.values != np.diag(df),0,df.where(df.values != np.flipud(df).diagonal(0),0,inplace=True))
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