python random numbers and comparison

Question

I'm a new programmer and just starting off with Python. I have the following 2 questions, however, I decided to put them in one post.

1. When asking to input age, how do I force the program to only accept numbers?

2. The concept is that after the user has entered their age, the program would pick a random number between 1 and 100 and compare it to the user input, returning either "I'm older than you", "I'm younger than you" or "we are the same age".

   # 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)
   

Answer 1

Hi you can try this simply.

import random
name = input("What is your name? ")
print("Hello " + str(name))
while True :
    try :
        age = int(input("How old are you? "))
        break
    except :
        print("Your entered age is not integer. Please try again.")
print("Hello " + str(name) + ", you are " + str(age) + " years old.")
randNumber=random.randint(1, 100)
if randNumber > age :
    print("I am older than you")
if randNumber < age :
    print("I am younger than you")
else :
    print("we are the same age")

Only made few changes to existing code with modifications asked.