Python 用户输出的anser将以元音打印的程序

我想打印一个用户输入，输出的是元音

结果将是：

Enter a sentence: my name is Mike do you want to input more:yes Enter a sentence: i am from China Do you want to input more:no [a,e,i,i,e,i,a,o,i,a]

---

由于您提到用户输入应该仅为yes/no或yes/no，因此我还添加了一些使用输入和验证输入的方法

def validate_input(inp2):
    if inp2 == 'yes' or inp2 == 'YES' or inp2 == 'no' or inp2 == 'NO':
        return True
    else:
        return False

def take_input(self):
    print("Enter a sentence: ")
    inp = input()
    self.vowels.extend([i for i in inp.lower() if i in 'aeiou'])


class PrintVowels():
    def __init__(self):
        self.vowels = []

    def get_vowels(self):
        take_input(self)

        while True:
            print("Do you want to input more?")
            inp2 = input()
            valid_inp = validate_input(inp2)
            if valid_inp:
                if inp2.lower() == 'no':
                    break
                else:
                    take_input(self)
            else:
                print("Error: Please try again with a valid input!")
                continue

        return self.vowels

ob1 = PrintVowels()
print (ob1.get_vowels())

输出：

Enter a sentence: 
my name is Mike
Do you want to input more?
blahhhhWHAAT
Error: Please try again with a valid input!
Do you want to input more?
oops
Error: Please try again with a valid input!
Do you want to input more?
yes
Enter a sentence: 
I am from China
Do you want to input more?
Huhhhh
Error: Please try again with a valid input!
Do you want to input more?
NO
['a', 'e', 'i', 'i', 'e', 'i', 'a', 'o', 'i', 'a']

---

到目前为止你有什么代码？您在任务的哪一部分遇到困难？问题不清楚，请明确指定您的输入内容以及您希望从该输入中得到什么。@vinodsesetti看起来输出只是按顺序列出组合输入中的所有元音。只需遍历sting并确定每个位置的字母表即可。如果遇到元音，请将其添加到列表中。最后只需打印列表。@CallMe programmer，下面的答案有助于解决您的问题吗？如果是这样，您可以标记您想要的，谢谢！

Enter a sentence: 
my name is Mike
Do you want to input more?
blahhhhWHAAT
Error: Please try again with a valid input!
Do you want to input more?
oops
Error: Please try again with a valid input!
Do you want to input more?
yes
Enter a sentence: 
I am from China
Do you want to input more?
Huhhhh
Error: Please try again with a valid input!
Do you want to input more?
NO
['a', 'e', 'i', 'i', 'e', 'i', 'a', 'o', 'i', 'a']