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June 2018

16 participants
12 discussions

Hash compatibility between PyPy and CPython
by Manuel Jacob June 2, 2018

June 2, 2018

Hi, Do we in general try to stay compatible with the hashes of CPython? I'm currently debugging a failure in lib-python's test_hash on linux32 in the py3.5 branch [1]. The test fails because currently on PyPy3.5, hash(int(-2**31)) == -2147483648 while hash(float(-2**31)) == -2. On CPython 3.6.5, both are -2. It seems like our float hashes are 100% compatible with CPython, but our int hashes are different in some cases (like the one above). In any case, i think that the invariant hash(i) == hash(float(i)) should hold for any int i that can be represented exactly by a float. Now the question is: should we change our int hash to be compatible with CPython? -Manuel [1] http://buildbot.pypy.org/summary/longrepr?testname=unmodified&builder=pypy-…

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Re: [pypy-dev] Mysterious IndexError in service running with PyPy
by Armin Rigo June 1, 2018

June 1, 2018

Hi, On 22 May 2018 at 09:15, hubo <hubo(a)jiedaibao.com> wrote: > One more thing I would like to confirm: looks like in PyPy3, a "yield from > my_generator()" expression delegates all exceptions inside, so the finalizer > in my_generator() is always executed. Am I right? I think so. PyPy3 should behave just like CPython3.5 in that respect. A bientôt, Armin.

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