code: def get_unconfirmed_tx(api_code=None):
      
  
      resource = 'unconfirmed-transactions?format=json'
      if api_code is not None:
          resource += '&api_code=' + api_code
      response = util.call_api(resource)
      json_response = json.loads(response)
      return [Transaction(t) for t in json_response['txs']]
docs: Get a list of currently unconfirmed transactions.
  
      :param str api_code: Blockchain.info API code (optional)
      :return: an array of :class:`Transaction` objects