[Bug]: objsize 0.6.0 release breaks ApproximateQuantilesTest

[lukecwik]

What happened?

tox -c tox.ini -e py37 -- apache_beam/transforms/stats_test.py::ApproximateUniqueTest_0

fails with:

objsize.py
    exclude_set.update(id(vars(m)) for m in list(sys.modules.values()))
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

.0 = <list_iterator object at 0x7fbe55e89410>

>   exclude_set.update(id(vars(m)) for m in list(sys.modules.values()))
E   TypeError: vars() argument must have __dict__ attribute [while running 'Globally/CombineGlobally(ApproximateQuantilesCombineFn)/InjectDefault']

Issue Priority

Priority: 1

Issue Component

Component: sdk-py-harness

[lukecwik]

Filed liran-funaro/objsize#7 to upstream dependency.