input function always produces a string output. If you want to output an integer you have to use int. example

If you want to number output from this below code

user_input = input("enter a number: ")
print(user_input ** 2)

it’ll show error like 

Traceback (most recent call last):                                                                                                                  
  File "try_input.py", line 2, in <module>                                                                                                          
    print(user_input ** 2)

So, you have to convert that string to an integer.

user_input = input("enter a number: ")
print(int(user_input) ** 2)

If you try this now under 10, you’ll get 100. 

enter a number: 10
100