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Commit 5c47f7c9 authored by Armin Rigo's avatar Armin Rigo
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re-add this sentence, tweaked

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......@@ -64,8 +64,9 @@
* **Missing RPython modules**: A few modules of the standard library
(like ``csv`` and ``cPickle``) are in C in CPython, but in pure Python
in PyPy. Sometimes the JIT is able to do a relatively good job, and
sometimes not.
in PyPy. Sometimes the JIT is able to do a good job on them, and
sometimes not. So it is generally still slower in PyPy than in CPython,
but not always (``heapq``, ``json``).
We generally consider things that are slower on PyPy than CPython to be bugs
of PyPy. If you find some issue that is not documented here,
......
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