code: def test_dictproxy_trick():
      if not OLD310 and MAPPING_PROXY_TRICK:
          x = {"a": 1}
          all_views = (x.values(), x.items(), x.keys(), x)
          seperate_views = dill.copy(all_views)
          new_x = seperate_views[-1]
          new_x["b"] = 2
          new_x["c"] = 1
          assert len(new_x) == 3 and len(x) == 1
          assert len(seperate_views[0]) == 3 and len(all_views[0]) == 1
          assert len(seperate_views[1]) == 3 and len(all_views[1]) == 1
          assert len(seperate_views[2]) == 3 and len(all_views[2]) == 1
          assert dict(all_views[1]) == x
          assert dict(seperate_views[1]) == new_x
  
imports: import dill
  from dill._dill import OLD310, MAPPING_PROXY_TRICK, DictProxyType
label_desc: Use image node_id 3 for calling a global function with example usage: test_dictproxy_trick() without return types