Is this result for hash('') expected?

[william-ml-leslie]

test_strhash

def test_strhash():
    expected_hash_empty_string = 0
    if IS_PYPY:
        expected_hash_empty_string = -2
    #
    h = _hash.strhash

> assert h('', 0, 0) == hash('') == expected_hash_empty_string
E assert -1 == -2
E + where -1 = hash('')

is_pypy

[wleslie@dirac:~/src/capnpy]
18:15:38 $ pypy
Python 2.7.10 (7e8df3df96417c16c2d55b41352ec82c9c69c978, Jun 24 2016, 11:49:45)
[PyPy 5.3.1 with GCC 4.9.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>>> hash('')
-1
>>>>

[antocuni]

That's weird:

$ pypy
Python 2.7.13 (3fbdd036db1c, Feb 26 2017, 23:00:12)
[PyPy 5.7.0-alpha0 with GCC 4.8.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
And now for something completely different: ``< arigato> then what occurs? <
fijal> good stuff I believe''
>>>> hash("")
-2

Where did you get your pypy from?

[william-ml-leslie]

It's a squeaky_pl portable build. pypy56 has hash('') == -2, but I normally test against 5.3.