使用的组合
astype(bool)和
duplicated
mask = df_freq.apply(pd.Series.duplicated, 1) & df_freq.astype(bool)df_freq.mask(mask, 0) A B C0 Z11 0 X111 Y11 2 Z11 0

使用的组合
astype(bool)和
duplicated
mask = df_freq.apply(pd.Series.duplicated, 1) & df_freq.astype(bool)df_freq.mask(mask, 0) A B C0 Z11 0 X111 Y11 2 Z11 0