code: def extract_file(self, name, full_path=False, directory="."):
          
          if self.handle:
              for member in self.handle.getmembers():
                  if (full_path and member.name == name or
                          not full_path and os.path.basename(
                              member.name) == name):
                      # TODO handle KeyError exception
                      self.handle.extract(member, path=directory)
docs: Extract a member from the archive to the specified working directory.
          Behaviour of name and pull_path is the same as in function
          get_content_of_file.