code: def get_nowait(self, name, default=_MISSING, autoremove=False):
          
  
          self._ensure_declared(name)
  
          try:
              future = self._data[name]
              if future.done():
                  return future.result()
  
              if default is _MISSING:
                  raise KeyError("Key {} has not been assigned a value and no default given".format(name))
  
              return default
          finally:
              if autoremove:
                  self._data[name].cancel()
                  del self._data[name]
docs: Get the value of a key if it is already set.
  
          This method allows you to check if a key has already been set
          without blocking.  If the key has not been set you will get the
          default value you pass in or KeyError() if no default is passed.
  
          When this method returns the key is automatically removed unless
          you pass ``autoremove=False``.
  
          This method is not a coroutine and does not block.
  
          Args:
              name (str): The name of the key to wait on.
              default (object): The default value to return if the key
                  has not yet been set.  Defaults to raising KeyError().
              autoremove (bool): Whether to automatically remove the
                  key when get() returns.
  
          Returns:
              object: Whatever was set in the key by :meth:`set`.