在给定元组列表的情况下，如何在DataFrame中设置元组的子集？

import pandas as pd
import numpy as np

data = [('A', 1), ('B', 2), ('C', 3), ('D', 4)]
df = pd.DataFrame(data, columns=['Letter', 'Number'])

subset = df[df['Number'] > 2]

print(subset)

import pandas as pd
import numpy as np

data = [('A', 1), ('B', 2), ('C', 3), ('D', 4)]
df = pd.DataFrame(data, columns=['Letter', 'Number'])

subset = df[df['Number'] > 2]
print(subset)