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Issue #26186: Remove the restriction that built-in and extension

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modules  can't be lazily loaded.

Thanks to Python 3.6 allowing for types.ModuleType to have its
__class__ mutated, the restriction can be lifted by calling
create_module() on the wrapped loader.
This commit is contained in:
Brett Cannon 2016-06-25 10:58:17 -07:00
parent da037616b1
commit 696c35e86b
4 changed files with 50 additions and 27 deletions
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2
Lib/test/test_importlib/test_lazy.py
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@ -66,6 +66,8 @@ class LazyLoaderTests(unittest.TestCase):
spec = util.spec_from_loader(TestingImporter.module_name,
util.LazyLoader(loader))
module = spec.loader.create_module(spec)
if module is None:
module = types.ModuleType(TestingImporter.module_name)
module.__spec__ = spec
module.__loader__ = spec.loader
spec.loader.exec_module(module)