docstr: Removes all given orders from the blotter's open_orders list.
  
  Parameters
  ----------
  closed_orders: iterable of orders that are closed.
  
  Returns
  -------
  None
docstr_tok: ["Removes","all","given","orders","from","the","blotter","'s","open_orders","list",".","Parameters","--","--","--","--","--","closed_orders",":","iterable","of","orders","that","are","closed",".","Returns","--","--","--","-","None"]
code: def prune_orders(self, closed_orders):
      """
      Removes all given orders from the blotter's open_orders list.
  
      Parameters
      ----------
      closed_orders: iterable of orders that are closed.
  
      Returns
      -------
      None
      """
  
      raise NotImplementedError("prune_orders")
  
file_path: zipline/zipline/finance/blotter/blotter.py
imports: from abc import ABCMeta, abstractmethod
  from six import with_metaclass
  from zipline.extensions import extensible
  from zipline.finance.cancel_policy import NeverCancel
label_desc: Use image node_id 12 for calling the Blotter obj's underlying member method code with example usage: obj.prune_orders(closed_orders) without return types