Comment #3 on issue 1507 by [email protected]: pickling test takes too
much time
http://code.google.com/p/sympy/issues/detail?id=1507
The cause of the problem is that Polygon has properties performing long
computations
- which is bad style. Since the pickling test checks equality of instance
attributes
after pickling and copying round-trips, these properties are called
multiple times.
Caching the properties would mitigate the problem, but they really should
be made
faster or turned into ordinary methods. Also, I'm not convinced that
pickling-unpickling should necessarily return an exact clone of the
original object.
Anyway, here's a patch that works around the issue by disabling the
attribute check
in test_geometry().
Attachments:
0001-Don-t-check-expensive-properties-in-test_pickling.py.patch 1.6 KB
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