code: def shl(computation: BaseComputation) -> None:
      
      shift_length, value = computation.stack_pop(num_items=2, type_hint=constants.UINT256)
  
      if shift_length >= 256:
          result = 0
      else:
          result = (value << shift_length) & constants.UINT_256_MAX
  
      computation.stack_push(result)
docs: Bitwise left shift