如何使用Python从TXT文档中提取多组指定起止章节之间的文本内容

• 匹配逻辑错误：原代码直接将单行去除空白后的内容与start/end两个列表做相等判断，字符串和列表不可能相等，所以匹配逻辑完全失效，永远无法触发复制开关。
• 标签匹配规则不合理：示例文档中的章节标题并非完全等于列表内的标签文本（比如实际行内容为Complaint / History Of Present Illness，标签仅为Complaint），用全等判断也无法匹配到对应行。
• 冗余代码：使用with语法管理文件句柄时，代码块执行结束后会自动关闭文件，末尾手动调用outfile.close()属于多余操作。

intakedoc = 'Minnie.txt'
savedfile = "Mouse.txt"

start = ["Complaint", "Health History", "Psychiatric History and Treatment", "Education", "Drug and Alcohol Use", "Additional Personal Information", "Clinical Review of Systems", "Mental Status Examination" ]
end = ["Health History", "Psychiatric History and Treatment", "Education", "Drug and Alcohol Use", "Additional Personal Information", "Clinical Review of Systems", "Mental Status Examination", "Risk Assessments"]


with open(intakedoc, 'r', encoding='utf-8') as infile, open(savedfile, 'w', encoding='utf-8') as outfile:
    copy = False
    for line in infile:
        stripped_line = line.strip()
        # 判断当前行是否包含任意起始标签
        if any(tag in stripped_line for tag in start):
            copy = True
            outfile.write(line)
        # 判断当前行是否包含任意结束标签
        elif any(tag in stripped_line for tag in end):
            copy = False
            outfile.write(line)
        elif copy:
            outfile.write(line)

• 调整了匹配逻辑：用any()遍历start/end列表，判断当前行是否包含对应标签，适配章节标题带额外后缀的场景，如果你需要更精准的匹配，可以把tag in stripped_line改为stripped_line.startswith(tag)，仅匹配以标签开头的行。
• 保留了原有写入规则：匹配到起始标签后开启复制，匹配到结束标签后关闭复制，起止标签行本身也会写入结果文件。
• 新增了encoding='utf-8'参数，避免不同系统下读写文件出现乱码问题。
• 移除了冗余的手动关闭文件代码。

内容的提问来源于stack exchange，提问作者bmedclinic