code: def unzip(file_obj):
      
      files = []
      # TODO: implement try-except here
      zip = ZipFile(file_obj)
      bad_file = zip.testzip()
      if bad_file:
          raise Exception('"%s" in the .zip archive is corrupt.' % bad_file)
      infolist = zip.infolist()
      for zipinfo in infolist:
          if zipinfo.filename.startswith('__'):  # do not process meta files
              continue
          file_obj = SimpleUploadedFile(name=zipinfo.filename, content=zip.read(zipinfo))
          files.append((file_obj, zipinfo.filename))
      zip.close()
      return files
docs: Take a path to a zipfile and checks if it is a valid zip file
      and returns...