Python 2.7 Data Validation

I need help for this data validation problem in Python 2.7, it does what i want it doesn't accept strings however it doesn't accept integers either as it should do. def GetKeyForCa

Solution 1:

It accepts integers just fine, but you are returning the original string value. You should either return i or assign to key instead:

key = int(key)

Solution 2:

Martijn's answer is correct, of course, but if you improved your style, you might find debugging easier. Try it like this:

defpromptForInteger(prompt):
  whileTrue:
    try:
      returnint(raw_input(prompt))
    except ValueError:
      print ('Error, please enter an integer')

defgetKeyForCaesarCipher():
   return promptForInteger('Enter the amount that shifts the plaintext alphabet to the ciphertext alphabet: ')