J Kenneth King <ja...@agentultra.com> writes: > mcherm <mch...@gmail.com> writes: >> I think you have a fundamental misunderstanding of the reasons why Python >> is slow. Most of the slowness does NOT come from poor implementations: the >> CPython implementation is extremely well-optimized; the Jython and Iron >> Python implementations use best-in-the-world JIT runtimes. Most of the >> speed issues come from fundamental features of the LANGUAGE itself, mostly >> ways in which it is highly dynamic. >> >> -- Michael Chermside
> You might be right for the wrong reasons in a way. Python isn't slow > because it's a dynamic language. All the lookups you're citing are highly > optimized hash lookups. It executes really fast. Sorry, but Michael is right for the right reason. Python the *language* is slow because it's "too dynamic". All those hash table lookups are unnecessary in some other dynamic languages and they slow down Python. A fast implementation is going to have to be very clever about memoizing method lookups and invalidating assumptions when methods are dynamically redefined. > As an implementation though, the sky really is the limit and Python is > only getting started. Yes, but Python is starting in the basement. bob -- http://mail.python.org/mailman/listinfo/python-list
