Why wasn't PyPy included in standard Python?

Question

I was looking at PyPy and I was just wondering why it hasn\'t been adopted into the mainline Python distributions. Wouldn\'t things like JIT compilation and lower memory footpri

Answer 1

See this video by Guido van Rossum. He talks about the same question you asked at 12 min 33 secs.

Highlights:

• lack of Python 3 compatibility
• lack of extension support
• not appropriate as glue code
• speed is not everything

After all, he's the one to decide...