I guess if you have the time you can debug it and try to figure out
what is going on. I guess you could also just submit a bug report to
bugs.python.org with steps to reproduce it.

Aaron Meurer

On Wed, Sep 30, 2015 at 12:19 PM, Peter Brady <[email protected]> wrote:
> Any ideas on how to test this and turn it into a reasonable bug report?
>
> On Tue, Sep 29, 2015 at 10:27 AM, Aaron Meurer <[email protected]> wrote:
>>
>> On Mon, Sep 28, 2015 at 8:06 PM, Kate MacInnis <[email protected]>
>> wrote:
>> > Oh, sure.  Didn't mean to imply that it doesn't, I'm just happy that I
>> > can
>> > start my next project using sympy and python 3.5.
>> >
>> > Although, I am confused-- how can it be a bug in fastcache if it only
>> > shows
>> > up when fastcache isn't installed?
>>
>> Oh, I guess I got that backwards. Peter's assessment that it's a bug
>> in lru_cache sounds right. We should determine if it really is a bug
>> in lru_cache and not just in the way we are using it, and if so,
>> report this to upstream CPython.
>>
>> Aaron Meurer
>>
>> >
>> > On Monday, September 28, 2015 at 7:43:58 PM UTC-5, Aaron Meurer wrote:
>> >>
>> >> This does need to be fixed, though. I suspect it's a bug in fastcache.
>> >>
>> >> Aaron Meurer
>> >>
>> >> On Mon, Sep 28, 2015 at 7:42 PM, Kate MacInnis <[email protected]>
>> >> wrote:
>> >> > Awesome.  That fixes all 7 errors in physics/vector and vector.  So
>> >> > in
>> >> > 3.4
>> >> > it works with or without fastcache, in 3.5 it works only with
>> >> > fastcache.
>> >> >
>> >> > The only other problem I got was in sympify, where the expected error
>> >> > for
>> >> > "lambda *args: args" changes from a SyntaxError to a TypeError,
>> >> > because
>> >> > of
>> >> > the changes to sequence unpacking in 3.5.  So that's a simple fix.
>> >> >
>> >> > On Monday, September 28, 2015 at 7:15:12 PM UTC-5, Aaron Meurer
>> >> > wrote:
>> >> >>
>> >> >> I think this might have to do with fastcache. If I install it, the
>> >> >> test passes, but if I remove it, it fails.
>> >> >>
>> >> >> Aaron Meurer
>> >> >>
>> >> >> On Mon, Sep 28, 2015 at 6:17 PM, Kate MacInnis <[email protected]>
>> >> >> wrote:
>> >> >> > Alright, I might try to delve into the test runner then.  I'm
>> >> >> > running
>> >> >> > this
>> >> >> > on Python 3.5, and there are several oddities, including an error
>> >> >> > that
>> >> >> > interrupts the test running process if you run `test("vector")`
>> >> >> > but
>> >> >> > not
>> >> >> > `test('sympy/physics/vector/tests/test_functions')` -- but if you
>> >> >> > comment
>> >> >> > out the entire file sympy/physics/vector/tests/test_functions.py,
>> >> >> > then
>> >> >> > `test("vector")` completes.
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> > On Monday, September 28, 2015 at 3:44:50 PM UTC-5, Aaron Meurer
>> >> >> > wrote:
>> >> >> >>
>> >> >> >> I think that should work. Usually when a test fails, I open the
>> >> >> >> file
>> >> >> >> and take a look at it, and run the code manually if I need to,
>> >> >> >> but
>> >> >> >> the
>> >> >> >> test runner doesn't do anything more than just import the modules
>> >> >> >> and
>> >> >> >> run all the functions that start with "test_".
>> >> >> >>
>> >> >> >> Aaron Meurer
>> >> >> >>
>> >> >> >> On Mon, Sep 28, 2015 at 3:31 PM, Kate MacInnis
>> >> >> >> <[email protected]>
>> >> >> >> wrote:
>> >> >> >> > I just want to make sure I understand how testing is supposed
>> >> >> >> > to
>> >> >> >> > work,
>> >> >> >> > before I start going through the code looking for the source of
>> >> >> >> > (what
>> >> >> >> > I
>> >> >> >> > think is) weirdness.
>> >> >> >> >
>> >> >> >> > If I run `sympy.test('test_frame')` and get:
>> >> >> >> >
>> >> >> >> > sympy/physics/vector/tests/test_frame.py[4] .EE.
>> >> >> >> > [FAIL]
>> >> >> >> >
>> >> >> >> >
>> >> >> >> >
>> >> >> >> >
>> >> >> >> >
>> >> >> >> > _____________________________________________________________________________________
>> >> >> >> > _______________
>> >> >> >> > sympy/physics/vector/tests/test_frame.py:test_ang_vel
>> >> >> >> > _______________
>> >> >> >> >   File
>> >> >> >> >
>> >> >> >> >
>> >> >> >> >
>> >> >> >> > "/users/kate/devstuff/sympy/sympy/physics/vector/tests/test_frame.py",
>> >> >> >> > line
>> >> >> >> > 65, in test_ang_vel
>> >> >> >> > ...
>> >> >> >> >
>> >> >> >> >
>> >> >> >> > then I should be able to do
>> >> >> >> >>>> from sympy.physics.vector.tests.test_frame import
>> >> >> >> >>>> test_ang_vel
>> >> >> >> >>>> test_ang_vel()
>> >> >> >> >
>> >> >> >> > and get the same error, right?  Or is that not what is supposed
>> >> >> >> > to
>> >> >> >> > happen?
>> >> >> >> >
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