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.

unladen swallow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。

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When you send an order into the marketplace, speed is a big part of best execution.

FORBES: Examining The Options Flash

This put the NYSE, where prices tend to be good but execution is usually slow, on notice that it had to upgrade its electronic capability at once in order to speed up trades.

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