为什么return语句输出错误的字符串/ int格式？

Question

为什么这个程序的return语句用括号和引号输出答案？

示例输出：('The age of the oldest child is', 6)

虽然当我使用print语句而不是return时，格式化是否正确？

带有print语句的示例输出：The age of the oldest child is 6

def ageOfOldest():

    age_youngest = input("Enter the age of the youngest child: ")
    age_middle = input("Enter the age of the middle child: ")

    age_of_oldest = (age_middle - age_youngest) + age_middle
    return "The age of the oldest child is ", age_of_oldest


print ageOfOldest()

Answer 1

因为你正在返回一个元组。请尝试返回字符串。

return "The age of the oldest child is {}".format(age_of_oldest)