Python输入函数，打印

Question

我正在尝试创建一个简单的函数，其中 python 将根据您的年份输入计算年龄。我已经尝试了几种方法，但我没有运气 atm。
附:对不起，我是新手。

ame = input(" Enter your name: ")

age = input(" When were you born?: ")

print("Hello " + name + "! You are " + input (2021 - age)

Answer 1

import datetime

# get the year so it works all the time.
year = datetime.datetime.today().year
name = input(" Enter your name: ")
birth_year = input(" When were you born (year) ?: ")

# calclute the age
age = year - int(birth_year)

print("Hello " + name + "! You are ", age)

还有其他打印方式可能看起来更干净:

print(f'Hello {name}! You are {age}')

或者

print("Hello {0}! You are {1}".format(name, age))

使其成为函数:

import datetime

def age_cal(birth_year):
    # get the year so it works all the time.
    year = datetime.datetime.today().year
    return year - int(birth_year)

if __name__ == "__main__":
    name = input(" Enter your name: ")
    birth_year = input(" When were you born (year) ?: ")
    age = age_cal(birth_year)

    print("Hello {0}! You are {1}".format(name, age))