code: def test_base_transform_can_take_none_prop_and_it_becomes_0_5(trf):
      assert 0.5 == trf(p=None).p
  
imports: import solt.transforms
  import solt.core
  import numpy
  import pytest
  import sys, inspect
  import torch
  from .fixtures import *
label_desc: Use image node_id 6 for calling a global function with example usage: test_base_transform_can_take_none_prop_and_it_becomes_0_5(trf) without return types