def chooseOneLetter(base1, base2):
    ratio = 10
    seed = int(random.uniform (0, ratio*len(base1)+len(base2)))
    if seed < ratio*len(base1):
        #print("SIAL1")
        #print(int(seed/ratio))
        chosenLetter = base1[int(seed/ratio)]
        base1.remove(chosenLetter)
    else:
        #print("SIAL2")
        #print(seed - ratio*len(base1))
        chosenLetter = base2[(seed - ratio*len(base1))]
        base2.remove(chosenLetter)
    return chosenLetter

def getSecretCode(base1, base2):
    #print("new run")
    secretCode = ""
    for i in range(4):
        chosenLetter = chooseOneLetter(base1, base2)
        secretCode += chosenLetter
    return secretCode