分类：字符串

知识点：

1. 字符串转list，每个字符成为list中的一个元素    list(string)

2. 字符串变大小写    str.upper(), str.lower()

题目来自【华为招聘模拟考试】

# If you need to import additional packages or classes, please import here.

def func():

    # please define the python3 input here. For example: a,b = map(int, input().strip().split())
    sentence = input().strip()
    my_list = list(sentence)
    # ['w', 'h', 'o', ' ', 'l', 'o', 'v', 'e']
    # print(my_list)
    
    vowels = ('a','e','i','o','u','A','E','I','O','U')
    new_my_list = []
    for letter in my_list:
        if letter in vowels:
            new_my_list.append(letter.upper())
        elif letter == ' ':
            new_my_list.append(letter)
        else:
            new_my_list.append(letter.lower())
    
    # print(new_my_list)
    new_sentence = ''.join(new_my_list)
    print(new_sentence)
    # please finish the function body here.
    # please define the python3 output here. For example: print().

if __name__ == "__main__":
    func()

by 软件工程小施同学