用多个字符拆分句子，并在每个句子的末尾将它们连接起来

Question

我有一个包含1000个句子的文本文件。我从“.”中拆分了句子，但这些句子中也有“？”和“！”。我也需要拆分它们，并在这些句子的末尾加入这些字符。例如：text=“我有一个朋友。我有很多朋友！我今天很开心。你开心吗？我希望你是。”输出：

I have a friend.
I have many friends!
I am very happy today.
Are you happy?
I wish you were.

我尝试过的代码是

textsentences = text.split('.')
I have tried this code.
with open("file.txt",'w') as writefile:
    for line in textsentences:
        line = line.strip()
        writefile.write("%s . \n" % line)

它仅适用于一个字符。

Answer 1

这应该行得通。line_start变量是为了避免句子开头不必要的空格：

text = "I have a friend. I have many friends! I am very happy today. Are you happy? I wish you were."
line_start = False
with open("file.txt", 'w') as writefile:
    for i in range(len(text)):
        if text[i].isalnum() or text[i] == ' ':
            if line_start == True and text[i] == ' ':
                line_start = False
                continue
            writefile.write(text[i])
        else:
            writefile.write(text[i] +'\n')
            line_start = True

输出 ： 文件.txt

I have a friend.
I have many friends!
I am very happy today.
Are you happy?
I wish you were.