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Author SHA1 Message Date
Brett Cannon 696c35e86b Issue #26186: Remove the restriction that built-in and extension 
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.
 2016-06-25 10:58:17 -07:00
Brett Cannon e92dc9c23d Fix a scoping issue where an UnboundLocalError was triggered if a 
lazy-loaded module was already in sys.modules.
 2016-06-25 10:47:53 -07:00
Brett Cannon 558823a0cf Issue #26186: Remove an invalid type check in 
importlib.util.LazyLoader.

The class was checking its argument as to whether its implementation
of create_module() came directly from importlib.abc.Loader. The
problem is that the classes coming from imoprtlib.machinery do not
directly inherit from the ABC as they come from _frozen_importlib.
Because the documentation has always said that create_module() was
ignored, the check has simply been removed.
 2016-02-20 18:35:41 -08:00
Brett Cannon a04dbe4fe7 Issue #17621: Introduce importlib.util.LazyLoader. 2014-04-04 13:53:38 -04:00