如何编写Python代码来查找特定行值的Pandas DF中某列的值的总和？

import pandas as pd

df = pd.DataFrame({'A': [1, 2, 3, 4, 5], 'B': [10, 20, 30, 40, 50]})

condition = df['A'] > 2

filtered_df = df[condition]

column_sum = filtered_df['B'].sum()

import pandas as pd

df = pd.DataFrame({'A': [1, 2, 3, 4, 5], 'B': [10, 20, 30, 40, 50]})

condition = df['A'] > 2
filtered_df = df[condition]

column_sum = filtered_df['B'].sum()

print("特定行值的某列值的总和：", column_sum)