docs: def get_zip_content(self, filename):
          """Get zip content."""
  
          with zipfile.ZipFile(filename, 'r') as z:
              self.determine_file_type(z)
              for item in z.infolist():
                  if glob.globmatch(item.filename, self.filepattern, flags=self.FLAGS):
                      yield z.read(item.filename), item.filename