为什么我的函数在每个输出上都返回None

Question

我的函数在true的“ if”输出上返回None

我尝试使用return语句，但是它没有用，可能我做的不正确

class Check_alpha:
    def __init__(self, word):self.word = word
    def word_end(self):
        P,M,N = self.word, self.word[-1], self.word[-2:]
        ending_alpha # a function below
        def split():
            if ' ' in self.word:
                self.word = self.word.split(' ')
                for ch in range(len(self.word)):
                    #here i am trying to apply ending alpha to each split word
                    print(ending_alpha(self.word[ch], self.word[ch][-1], self.word[ch][-2:]))
           else:
                print(ending_alpha(P, M, N))
        return split()


ending_alpha = lambda p,m,n:f'{p}u' if m == 'c' else f"{p,replace(p[-2:], 'ji')}" if n == 'ge' else f'{p}'

change = Check_alpha('age sac')
print(change.word_end())

预期输出应为 阿吉萨库 相反，我越来越 阿吉 萨库 没有