code: def get(account_id, account_type_id=None):
          
          if type(account_id) == str:
              args = {'account_name': account_id}
          else:
              args = {'account_id': account_id}
  
          if account_type_id:
              args['account_type_id'] = account_type_id
  
          return db.Account.find_one(**args)
docs: Return account by ID and type
  
          Args:
              account_id (`int`, `str`): Unique Account identifier
              account_type_id (str): Type of account to get
  
          Returns:
              :obj:`Account`: Returns an Account object if found, else None