Spanisch - irreguläre Verben lernen

import random

class WortGruppe:
    def __init__(self, deutsch, grundform, s1, s2, s3, p1, p2, p3):
        self.de = deutsch
        self.gf = grundform

        self.s1 = s1
        self.s2 = s2
        self.s3 = s3

        self.p1 = p1
        self.p2 = p2
        self.p3 = p3

    def get(self, sg, pers):
        if(sg == "Plural"):
            if(pers == 2):
                return self.p2
            elif(pers == 3):
                return self.p3
            else:
                return self.p1
        else:
            if(pers == 2):
                return self.s2
            elif(pers == 3):
                return self.s3
            else:
                return self.s1


def spRand():
    if(random.randint(1, 10) <= 5):
        return "Singular"
    else:
        return "Plural"
def persRand():
    return random.randint(1, 3)

w = [WortGruppe("(ein-)schlafen", "dormir", "dormí", "dormiste", "dormió", "dormimos", "dormisteis", "durmieron"),
     WortGruppe("sterben", "morir", "morí", "moriste", "murió", "morimos", "moristeis", "murieron"),
     WortGruppe("bitten", "pedir", "pedí", "pediste", "pidió", "pedimos", "pedisteis", "pidieron")
     ]

while(True):
    x = w[random.randint(0, len(w)-1)]
    sp = spRand()
    pers = persRand()
    s = input(x.gf + ", " + str(pers) + ". Person, " + sp + ": ")

    while(s != x.get(sp, pers)):
        s = input("Falsch! Versuch es nochmal: ")
    print("Richtig!\n")