code: def push_back(self, value):
          '''Appends a copy of *value* at the end of the :class:`Sequence`.'''
          self.cache.push_back(self.value_pickler.dumps(value))
          return self push_back(self, value):
          '''Appends a copy of *value* at the end of the :class:`Sequence`.'''
          self.cache.push_back(self.value_pickler.dumps(value))
          return self
docs: Appends a copy of *value* at the end of the :class:`Sequence`.