用python写一个遍历文件夹及子文件夹中所有doc/docx文件并且替换其中指定汉字的函数

在Python中，你可以使用`os`模块来遍历文件夹及其子文件夹，并结合`pathlib`库来处理文件路径，`openpyxl`或`python-docx`库来操作`.doc`或`.docx`文档。这里是一个基础的函数示例，它会查找并替换指定的汉字：

import os
from typing import List
import docx

def replace_char_in_doc_files(root_folder: str, target_char: str, replacement_char: str) -> List[str]:
    replaced_files = []
    
    # 遍历文件夹及其子文件夹
    for dirpath, _, filenames in os.walk(root_folder):
        for filename in filenames:
            if filename.endswith(('.doc', '.docx')):
                file_path = os.path.join(dirpath, filename)
                
                try:
                    # 打开文档
                    with docx.Document(file_path) as doc:
                        # 搜索并替换目标字符
                        for paragraph in doc.paragraphs:
                            text = paragraph.text
                            new_text = text.replace(target_char, replacement_char)
                            
                            # 如果文本有变化，保存新的文档
                            if text != new_text:
                                new_file_name = f"{filename}_replaced_{target_char}_{replacement_char}"
                                new_file_path = os.path.join(dirpath, new_file_name)
                                doc.save(new_file_path)
                                replaced_files.append(new_file_path)

                except Exception as e:
                    print(f"Error processing {file_path}: {e}")
                    
    return replaced_files

# 使用函数
root_folder = 'your_directory_path'  # 替换为你的文件夹路径
target_char = '原字符'  # 要替换的目标字符
replacement_char = '新字符'  # 替换的新字符
replaced_files = replace_char_in_doc_files(root_folder, target_char, replacement_char)