Python - Passing input (prompt) into Function

Question

I am trying to create a function that receives input from a user, re-prompts until one character is entered. Strip() is used to removed whitespace so only characters are counted.

Here is my current code:

def inputSomething(prompt, errorMessage = 'Atleast one character must be used'):
while True:
   value = (prompt)
   Response = value.strip()
   if len(Response) >=1:
      print ('Valid')           

   else:
      print(errorMessage)
      continue

inputSomething(input('Enter str: '))

The problem I'm having is with the loop. Right now it loops the result infinitely. Should I not be using if else?

Answer 1

The problem is that the input is outside the loop:

import sys

def inputSomething(prompt, errorMessage = 'Atleast one character must be used'):
        while True:
            value = input(prompt)
            Response = value.strip()
            if Response:
                print ('Valid')           
                return Response   
            else:
                print(errorMessage, file=sys.stderr)


something = inputSomething('Enter str: ')

Note that an empty string equates to False.

I was confused with recursion, because of the indentation used in your question.