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Say I have a test module test_foo, which fails to import with
ImportError. A reason for this might be a misspelt import in that module.
TestLoader().loadTestsFromName swallows the import error and instead
crashes with:
 File "/usr/lib/python2.6/unittest.py", line 584, in loadTestsFromName
 parent, obj = obj, getattr(obj, part)
AttributeError: 'module' object has no attribute 'test_foo'
A better thing to do would be to keep the import error and if the next
probe is an Attribute error, reraise the import error.
An alternative would be to return a test which would then reraise the
import error permitting the test suite to be constructed and execute but
still reporting the error.