" and that's precisely what we want to avoid. ��IMO that;s one reason why the Python (and e.g. PHP) community has been so slow to implement good VMs. ��It has deferred to C code for performance-critical code _where it could_ (e.g. regular expressions) at the expense of rigid dependence on that external library. ��Now that companies such as Dropbox and Facebook are needing Python and PHP to exhibit good performance they are finally implementing faster VMs long after other languages. ��"