code: def extractall(self, path=None, members=None, pwd=None):
          
          if members is None:
              members = self.namelist()
          self._extract_members(members, path, pwd)
docs: Extract all members from the archive to the current working
             directory. `path' specifies a different directory to extract to.
             `members' is optional and must be a subset of the list returned
             by namelist().