Print() is valid in Python2. It will print a tuple under some conditions, but that is still syntactically valid and a graceful degradation. (Print is for huma

Print() is valid in Python2. It will print a tuple under some conditions, but that is still syntactically valid and a graceful degradation. (Print is for humans to read. As long as a human can understand it, good enough. Going for full identical behavior costs extra :-) Valid-but-incompatible is fine for polyglot stuff. Merge the files and put in a version test around those parts.