python随机数和比较

我是一名新程序员，刚开始使用 Python。我有以下 2 个问题，但是，我决定将它们放在一个帖子中。

1. 当要求输入年龄时，如何强制程序只接受数字？

2. 这个概念是，在用户输入他们的年龄后，程序会选择 1 到 100 之间的随机数并将其与用户输入进行比较，返回“我比你大”、“我“比你小”或“我们同龄”。

   # Print Welcome Message 
   print("Hello World") 
   # Ask for Name 
   name = input("What is your name? ") 
   print("Hello " + str(name)) 
   # Ask for Age 
   age = input("How old are you? ") 
   print("Hello " + str(name) + ", you are " + str(age) + " years old.") 
   random.randint(1, 100) 
   

请您参考如下方法:

尝试以下操作

import random 
# Print Welcome Message 
print("Hello World") 
# Ask for Name 
name = input("What is your name? ") 
print("Hello " + str(name)) 
# Ask for Age 
while True:   # only numbers 
    try:  
        age = int(input("How old are you? ")) 
    except: 
        pass 
 
print("Hello " + str(name) + ", you are " + str(age) + " years old.") 
t=random.randint(1, 100) 
if t==age: 
    print("we are the same age")   #compare ages 
if t<age: 
    print("I'm younger than you") 
if t>age: 
    print("I'm older than you")