Message 293787 - Python tracker
Extract of Lib/lib2to3/pgen2/driver.py: if type in (tokenize.COMMENT, tokenize.NL): ... if debug: self.logger.debug("%s %r (prefix=%r)", token.tok_name[type], value, prefix) The code uses tokenize.COMMENT and look for this constant into token.tok_name. If token.tok_name doesn't contain COMMENT anymore, it breaks lib2to3, no? At least the debug mode which might not be covered by test_lib2to3.