Yeah , it was because Guido himself was not promoting that project . PyPy team really tried hard to be compatible , now almost all c-extensions including DS lib

Yeah , it was because Guido himself was not promoting that project . PyPy team really tried hard to be compatible , now almost all c-extensions including DS libraries worked. I am using PyPy in production for 8 years and - it reduce memory load by a lot , ( 80 MB vs over 300 MB for tornado web service running) - it is so much faster than python that is comparable to node in high load peformance. - it would be compatibile with every lib if Main Stream Python community had even tried it and work on it.