如何从字符串中获取一组单词？

def get_words_from_string(input_string):
    words = input_string.split(" ")  # 使用空格作为分隔符进行拆分
    words = [word.strip().lower() for word in words]  # 去除首尾空格并转换为小写
    return words

# 示例用法
input_string = "Hello World, How are you?"
words = get_words_from_string(input_string)
print(words)