code: def ContainsAddressStr(self, address):
          
          for key, contract in self._contracts.items():
              if contract.Address == address:
                  return True
          return False
docs: Determine if the wallet contains the address.
  
          Args:
              address (str): a string representing the public key.
  
          Returns:
              bool: True, if the address is present in the wallet. False otherwise.