将文件夹和子文件夹中的所有txt文件从ANSI解码为UTF-8

import os
import codecs
import chardet

def convert_encoding(file_path):
    # 检测文件编码
    with open(file_path, 'rb') as f:
        content = f.read()
        result = chardet.detect(content)
        encoding = result['encoding']
    
    # 如果文件编码为ANSI，则进行解码和重新编码
    if encoding == 'ascii':
        with codecs.open(file_path, 'r', encoding='ascii') as f:
            content = f.read()
        
        with codecs.open(file_path, 'w', encoding='utf-8') as f:
            f.write(content)

def convert_folder_encoding(folder_path):
    # 遍历文件夹及其子文件夹
    for root, dirs, files in os.walk(folder_path):
        for file in files:
            file_path = os.path.join(root, file)
            
            # 筛选出txt文件
            if file.endswith('.txt'):
                convert_encoding(file_path)

# 调用函数，将指定文件夹中的所有txt文件从ANSI解码为UTF-8
convert_folder_encoding('your_folder_path')