无法在Python中使用带有两个参数的分组应用函数

def group_function(param1, param2):
    return param1 + param2

result = group_function(1, 2)
print(result)  # 输出 3

def outer_function():
    def inner_function(param1, param2):
        return param1 + param2
    return inner_function(1, 2)

result = outer_function()
print(result)  # 输出 3

import pandas as pd

data = {
    'A': ['foo', 'bar', 'foo', 'bar', 'foo', 'bar', 'foo', 'foo'],
    'B': ['one', 'one', 'two', 'three', 'two', 'two', 'one', 'three'],
    'C': [1, 2, 3, 4, 5, 6, 7, 8],
    'D': [10, 20, 30, 40, 50, 60, 70, 80]
}

df = pd.DataFrame(data)

# 使用两个参数进行分组
grouped = df.groupby(['A', 'B']).sum()
print(grouped)

# 计算每个组合的总和
grouped_sum = df.groupby(['A', 'B'])['C'].sum()
print(grouped_sum)