尝试转换文件编码，默认转换成utf-8编码

转换文件编码

#coding=utf-8

import codecs
import os
import shutil
import chardet

def convert_encoding(file_path, target_encoding="utf-8"):
    """
    尝试转换文件编码，默认转换成utf-8编码
    :param file_path:
    :param target_encoding:
    """
    #TODO:提示：需要安装python的chardet库
    back_file = file_path + '.bak'
    try:
        shutil.copyfile(file_path, back_file)
        content = codecs.open(file_path, 'r').read()
        source_encoding = chardet.detect(content)['encoding']
        if str(source_encoding).lower() != target_encoding:
            content = content.decode(source_encoding)
            codecs.open(file_path, 'w', encoding=target_encoding).write(content)
        return True
    except:
        try:
            os.remove(file_path)
            os.rename(back_file, file_path)
        except:
            pass
    return False


if __name__ == "__main__":
    print convert_encoding("/home/lyh/ln.txt")