Random Dex Number

# Random Pokémon number, spits out a random National Dex number.
# Written by ProjectTitan313. Febuary 8, 2013.

import random

Continue = 'yes'
DexNumber = 0
TryAgain = 'no'

while Continue == 'yes':
    DexNumber = random.randint(1, 649)
    print ("Enter anything to generate a new number. Enter Q to exit program")
    TryAgain = input().lower()
    TryAgain = str(TryAgain)

    if TryAgain != 'q':
        Continue = 'yes'
        print (int(DexNumber))

    elif TryAgain == 'q':
        Continue = 'no'
        break