def decrypt(self, event):
InvalidKey = ("Invalid key, re-enter key")
NotInt = ("Not an integer")
EncryptedText = self.Text.get()
Key = self.Key.get()
while True:
try:
Key = int(Key)
except ValueError:
self.useful_msg.set(NotInt)
return False
else:
if Key >= 1 and Key <= 25:
break
else:
self.useful_msg.set(InvalidKey)
return False
DecryptedText = Caesar.Decrypt(EncryptedText, Key)
self.Out.set(DecryptedText)
self.useful_msg.set("Decryption complete")
