Display error when value added in input field is not int value

Question

I am running simple program in python. I am using input method and using following code

overflow = int(input("Enter the number"))
print(overflow)

I wanna that if someone will enter sting in input then input will show please enter number only

Answer 1

This is a good place to put a try-except block and learn about exception handling.

try:
    overflow = int(input("Enter the number"))
    print(overflow)
except ValueError:
    print("Please enter numbers only.")

try-except blocks are pretty cool, in the sense that you force an error, then catch it (that's what the except block does).

ValueError exceptions will be...

Raised when a built-in operation or function receives an argument that has the right type but an inappropriate value

You can wrap this around a while block to prevent the code from automatically closing or carrying on.

Answer 2

Hope this is what you want

overflow = input("Enter the number")
try:
    overflow = int(overflow)
    print(overflow)
except ValueError:
    print("Please enter number only")