STINNER Victor <vstin...@redhat.com> added the comment:
Does the test pass if you open the file in read+write ("w+b") mode rather than
write-only ("wb") mode?
I'm talking about this line:
open(support.TESTFN, 'wb')
Note: if you want to test, you have the modify the mode twice:
"with open('%s', 'wb') as f:" % support.TESTFN,
and
with open(support.TESTFN, 'wb') as f:
----------
nosy: +vstinner
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue35633>
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