球拍:给嵌套列表的每个元素添加一个数字

def add_number_to_nested_list(nested_list, number):
    for sublist in nested_list:
        for i in range(len(sublist)):
            sublist[i] += number
    return nested_list

nested_list = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
number = 10

result = add_number_to_nested_list(nested_list, number)
print(result)

[[11, 12, 13], [14, 15, 16], [17, 18, 19]]