如何在Python中从多列的行组中找到2个最大值，并显示其无重复的行和列索引

data = [
    [1, 2, 3],
    [4, 5, 6],
    [7, 8, 9]
]

import pandas as pd

df = pd.DataFrame(data)

# 找到最大的两个值
largest_values = df.stack().nlargest(2)

# 找到最大值的行和列索引
row_index = largest_values.index.get_level_values(0)
col_index = largest_values.index.get_level_values(1)

# 去重
unique_row_index = row_index.drop_duplicates()
unique_col_index = col_index.drop_duplicates()

# 输出结果
print("行索引：", unique_row_index.values)
print("列索引：", unique_col_index.values)