Logged In: YES 
user_id=89016

doctest tests should be OK. The error tests in test_unpack 
can be done with PyUnit too, you either use

self.assertRaises(ValueError, eval, "a,b = Seq()")

or

try:
   a,b = Seq()
except ValueError:
   pass
else:
   self.fail("failed")

test_zipfile_unittest.py looks OK, but should of course be 
named test_zipfile.py when you check it in.

test_unpack_doctest.py gives me:
**********************************************
************************
Failure in example: a == 4 and b == 5 and c == 6
from line #14 of test.test_unpack_doctest.doctests 
in /home/walter/Achtung/Python-
test/dist/src/Lib/test/test_unpack_doctest.pyc
Expected: False
Got: True
**********************************************
************************
1 items had failures:
   1 of  28 in test.test_unpack_doctest.doctests
***Test Failed*** 1 failures.
Traceback (most recent call last):
  File "Lib/test/test_unpack_doctest.py", line 133, in ?
    test_main(verbose=True)
  File "Lib/test/test_unpack_doctest.py", line 130, in test_main
    test_support.run_doctest(test_unpack_doctest, verbose)
  File "/home/walter/Achtung/Python-
test/dist/src/Lib/test/test_support.py", line 318, in 
run_doctest
    raise TestFailed("%d of %d doctests failed" % (f, t))
test.test_support.TestFailed: 1 of 28 doctests failed