[issue18170] define built-in exceptions in Python code

[Brett Cannon]

Brett Cannon added the comment:

Yeah, that's the tricky bit. =) That's why I was thinking of starting with the leaf exceptions and then just slowly working down the hierarchy until I hit exceptions that just had to exist in C code (e.g. BaseException, Exception, and maybe SyntaxError). The rest could be made fake with Exception to start and then replace after the module was loaded.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue18170>
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