What is "<module '?' (built-in)>"?

[Seo Sanghyeon]

Python 2.2.1 (#34, Apr  9 2002, 19:34:33) [MSC 32 bit (Intel)] on win32
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IDLE 0.8 -- press F1 for help
>>> from types import ModuleType as module
>>> MyModule = module()
>>> MyModule
<module '?' (built-in)>
>>> dir(MyModule)
[]
>>> 

What is this?