check if input is a string python code example

Example 1: how to say that an input needs to be a number python

try:
   val = int(userInput)
except ValueError:
   print("That's not an int!")

Example 2: python check if input is a number

user_input = input("Enter something:")

if type(user_input) == int:
    return user_input
else:
    print("Not a number")

Example 3: python check if value in string

def is_value_in_string(value: str, the_string: str):
    return value in the_string.lower()