pypy

Neither PyPy nor Unladen Swallow could change that aspect .

很不幸的是，PyPy或者unladenswallow都不能改变这个现实。

The unladen swallow group is now referring others to PyPy instead ; another Python runtime which uses a custom JIT in order to speed up execution .

unladenswallow小组现在将所有的精力转到PyPy上。这个是另外一个Python运行时，它自定义了JIT以加速执行效率。