43.10. Python 2 vs. Python 3# 43.10. Python 2 vs. Python 343.10. Python 2 vs. Python 3Prev UpChapter 43. PL/Python — Python Procedural LanguageHome Next43.10. Python 2 vs. Python 3 # PL/Python supports only Python 3. Past versions of Tantor SE-1C supported Python 2, using the plpythonu and plpython2u language names.