如何修改Python关键词匹配代码以调整输出格式？

Hey there! Let's tweak that code to get exactly the output format you want. Here's a step-by-step breakdown with the modified code:

原始代码（Chris_Rands提供） #

sentences = "My name is sing song. I am a mother. I am happy. You sing like my mother".split(".")
search_keywords=['mother','sing','song']
for sentence in sentences:
    print("{} key words in sentence:".format(sum(1 for word in search_keywords if word in sentence)))
    for word in search_keywords:
        if word in sentence:
            print(word)
    print(sentence + "\n")

原始输出 #

2 key words in sentence:
sing
song
My name is sing song

1 key words in sentence:
mother
I am a mother

0 key words in sentence:

I am happy

2 key words in sentence:
sing
mother
You sing like my mother

期望输出 #

2 key words in sentence: sing song My name is sing song
1 key words in sentence: mother I am a mother
0 key words in sentence: I am happy
2 key words in sentence: sing mother You sing like my mother

修改后的代码 #

sentences = "My name is sing song. I am a mother. I am happy. You sing like my mother".split(".")
search_keywords = ['mother','sing','song']

for sentence in sentences:
    # 清理句子前后空白，跳过split产生的空字符串
    cleaned_sentence = sentence.strip()
    if not cleaned_sentence:
        continue
    
    # 收集当前句子中匹配的关键词
    matched_words = [word for word in search_keywords if word in cleaned_sentence]
    keyword_count = len(matched_words)
    
    # 构建一行输出的各个部分
    output_components = [f"{keyword_count} key words in sentence:"]
    if keyword_count > 0:
        output_components.append(' '.join(matched_words))
    output_components.append(cleaned_sentence)
    
    # 拼接并打印整行内容
    print(' '.join(output_components))

代码修改说明 #

1. 清理句子内容：用strip()去除句子前后的空格，同时跳过split(".")后可能产生的空字符串（原句子末尾的句号会导致最后一个元素为空）。
2. 收集匹配关键词：用列表推导式一次性找出所有匹配的关键词，比原代码的循环打印更高效，也方便后续拼接。
3. 统一一行输出：把数量、匹配关键词（如果有）、句子放在一个列表里，用' '.join()拼接成整行，完美匹配你想要的格式。
4. 处理0关键词场景：当没有匹配关键词时，只输出数量和句子，不会出现多余的空白。

运行修改后的代码，就能得到你期望的输出结果啦！

内容的提问来源于stack exchange，提问作者Tao Song