Nick Coghlan wrote:
Or else it's just an accident of implementation, since the AST doesn't actually *need* to distinguish those two cases.
It doesn't seem to be an accident, because ast_for_slice() goes out of its way to manufacture a Name node for the missing argument. It doesn't seem to significantly simplify the compiler either, because compiler_slice() could just as easily treat it the same way as the other slice arguments and emit an instruction to load None if it's missing. So it's a mystery. Perhaps it made life easier for some earlier version of the compiler. -- Greg _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
