Documentation
Minor issue:
There is a misleading text formulation in library/functions at description of __import__: "For example, the statement import spam results in bytecode resembling the following code: spam = __import__('spam', globals(), locals(), [], 0)".
Although the functionality is very similar, the bytecode itself is completely different. This is because in case of the __import__ variant, there are lot's of stack and "search" operations, while import operates already with a single instruction.