如何在"_“处拆分字典键并创建二维表？

import pandas as pd

my_dict = {"key1": [1, 2, 3], "key2": [4, 5, 6], "key3": [7, 8, 9]}

keys = []
values = []

for key, value in my_dict.items():
    keys.append(key)
    values.append(value)

df = pd.DataFrame(values, columns=keys)

print(df)

import pandas as pd

my_dict = {"key1": [1, 2, 3], "key2": [4, 5, 6], "key3": [7, 8, 9]}

keys = []
values = []

for key, value in my_dict.items():
    keys.append(key)
    values.append(value)

df = pd.DataFrame(values, columns=keys)

print(df)