2to3 gets all the good low hanging fruit syntatic fixes I've found, but it really comes down to the str/bytes divergence and how mucked up the mixing was in the

2to3 gets all the good low hanging fruit syntatic fixes I've found, but it really comes down to the str/bytes divergence and how mucked up the mixing was in the py2 code. His comment here is the clinch... "pdbparse is among the worst offendants I’ve seen since, as any parsing library, it will happily handle and transform bytes-like data as string."