逻辑推演题——谁是骗子

在小红书看到一道逻辑问题（见下图），突发奇想地想用Python推演答案。

有大神只用了11行就得到了正确答案。代码见下面：

def check_liar(liar):

xiaoming = (liar != "小明")

xiaohong = xiaoming and liar != "小红"

xiaohua = (liar == "小红")

xiaole = (liar == "小华")

truth_count = int(xiaoming) + int(xiaohong) + int(xiaohua) + int(xiaole)

print(truth_count)

return truth_count == 3

for candidate in "小明", "小红", "小华", "小乐":

if check_liar(candidate):

print("骗子是{}".format(candidate))

自己学了几年Python，还不能解决这个初级问题，感觉备受打击。