code: def test_lazy_attach():
      name = "mymod"
      submods = ["mysubmodule", "anothersubmodule"]
      myall = {"not_real_submod": ["some_var_or_func"]}
  
      locls = {
          "attach": lazy.attach,
          "name": name,
          "submods": submods,
          "myall": myall,
      }
      s = "__getattr__, __lazy_dir__, __all__ = attach(name, submods, myall)"
  
      exec(s, {}, locls)
      expected = {
          "attach": lazy.attach,
          "name": name,
          "submods": submods,
          "myall": myall,
          "__getattr__": None,
          "__lazy_dir__": None,
          "__all__": None,
      }
      assert locls.keys() == expected.keys()
      for k, v in expected.items():
          if v is not None:
              assert locls[k] == v
  
file_path: networkx/networkx/tests/test_lazy_imports.py
imports: import importlib
  import sys
  import types
  import pytest
  import networkx.lazy_imports
label_desc: Use image node_id 4 for calling a global function with example usage: test_lazy_attach() without return types