zipfile解压文件名乱码

# zipfile.py

# 第一处
if flags & 0x800:
    # UTF-8 file names extension
    filename = filename.decode('utf-8')
else:
    # Historical ZIP filename encoding
    filename = filename.decode('cp437')
    # 追加此句
    filename = filename.encode("cp437").decode('utf-8')

# 第二处
if zinfo.flag_bits & 0x800:
    # UTF-8 filename
    fname_str = fname.decode("utf-8")
else:
    fname_str = fname.decode("cp437")
        # 追加此句
    fname_str = fname_str.encode("cp437").decode('utf-8')

import zipfile

# 指定想要统计的文件类型
whitelist = ['py']


# 遍历文件, 递归遍历文件夹中的所有
def getFile(basedir):
    
    # 存储上传解压后的文件列表

    filelists = []
    for parent, dirnames, filenames in os.walk(basedir):
        # for dirname in dirnames:
        #    getFile(os.path.join(parent,dirname)) #递归
        for filename in filenames:
            ext = filename.split('.')[-1]
            # 只统计指定的文件类型，略过一些log和cache文件
            if ext in whitelist:
                filelists.append(os.path.join(parent, filename))


# 统计一个文件的行数
def countLine(fname):
    count = 0
    single_quotes_flag = False
    double_quotes_flag = False
    with open(fname, 'rb') as f:
        for file_line in f:
            file_line = file_line.strip()
            # print(file_line)
            # 空行
            if file_line == b'':
                pass

            # 注释 # 开头
            elif file_line.startswith(b'#'):
                pass

            # 注释 单引号 ''' 开头
            elif file_line.startswith(b"'''") and not single_quotes_flag:
                single_quotes_flag = True
            # 注释 中间 和 ''' 结尾
            elif single_quotes_flag == True:
                if file_line.endswith(b"'''"):
                    single_quotes_flag = False

            # 注释 双引号 """ 开头
            elif file_line.startswith(b'"""') and not double_quotes_flag:
                double_quotes_flag = True
            # 注释 中间 和 """  结尾
            elif double_quotes_flag == True:
                if (file_line.endswith(b'"""')):
                    double_quotes_flag = False

            # 代码
            else:
                count += 1

        # print(fname + '----', count)
        #   单个文件行数
        print(fname, '----count:', count)
        return count


def un_zip(file_name):
    """unzip zip file"""
    zip_file = zipfile.ZipFile(file_name)
    # 
    if os.path.isdir(file_name + "_files"):
        pass
    else:
        os.mkdir(file_name + "_files")
    for names in zip_file.namelist():
        zip_file.extract(names, file_name + "_files/")
    # 遍历解压后得到的文件夹, 递归遍历文件夹中的所有子文件
    getFile(file_name + "_files")
    totalline = 0
    # 遍历解压后的文件列表，统计单个文件的行数并汇总
    for filelist in filelists:
        totalline = totalline + countLine(filelist)
    zip_file.close()
    # 返回上传文件所有子文件的总行数
    return totalline

class Uploading(View):

    def get(self, request):
        return render(request, "uploading.html", )

    def post(self, request):
        # 1、拿到压缩文件对象file_obj
        file_obj = request.FILES.get("user_file")
        file_name = os.path.join(file_dir, file_obj.name)
        file_size = file_obj.size
        with open(file_name, "wb") as f:
            for line in file_obj.chunks():
                f.write(line)

        # 2、解压压缩文件,并获取代码行数属性
        total_line = un_zip(file_name)
        # 3、单个文件进行文件对象实例化，文件名，文件大小，代码行数
        models.FileObj.objects.create(
            fileName=file_obj.name,
            fileSize=file_size,
            fileLineCount=total_line
        )
        return redirect("/upload_file/")

# MAC环境下略过__MACOSX文件夹
        if "__MACOSX" in dirnames:
            pop_index = dirnames.index("__MACOSX")
            dirnames.pop(pop_index)