python象限问题！求求大神帮帮忙！

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while True:    x = input("x:")    if x.isalpha:        print("exit)        break    y = input("y:")    if y.isalpha:        print("exit)        break    x,y = int(x),int(y)    if x>0:        if y > 0:            print("Q1")        elif y < 0:            print("Q4")        else:            print(x,y)    elif x < 0:        if y > 0:            print("Q2")        elif y < 0:            print("Q3")        else:            print(x,y)    else:        print(x,y)

最小白式的写法了，没有任何高级语句或者巧妙写法。。这还看不懂，趁早放弃写代码