implementation=broken, suite=all
FFF.....FFF                                                              [100%]
=================================== FAILURES ===================================
__________________________________ test_page ___________________________________
test_baseline.py:6: in test_page
    assert page([10, 20, 30, 40], 1, 2) == [10, 20]
E   assert [30, 40] == [10, 20]
E     
E     At index 0 diff: 30 != 10
E     Use -v to get more diff
________________________________ test_discount _________________________________
test_baseline.py:10: in test_discount
    assert discounted_price(50, 10) == 45
E   assert 40 == 45
E    +  where 40 = discounted_price(50, 10)
________________________________ test_cache_key ________________________________
test_baseline.py:14: in test_cache_key
    assert cache_key("alpha", 7) != cache_key("beta", 7)
E   AssertionError: assert '7' != '7'
E    +  where '7' = cache_key('alpha', 7)
E    +  and   '7' = cache_key('beta', 7)
____________________________ test_p95_twenty_values ____________________________
test_regressions.py:5: in test_p95_twenty_values
    assert p95(list(range(1, 21))) == 19
E   assert 20 == 19
E    +  where 20 = p95([1, 2, 3, 4, 5, 6, ...])
E    +    where [1, 2, 3, 4, 5, 6, ...] = list(range(1, 21))
E    +      where range(1, 21) = range(1, 21)
_______________________________ test_whitespace ________________________________
test_regressions.py:9: in test_whitespace
    assert word_count(" \thello   world\n ") == 2
E   AssertionError: assert 6 == 2
E    +  where 6 = word_count(' \thello   world\n ')
_______________________________ test_empty_mean ________________________________
test_regressions.py:15: in test_empty_mean
    assert mean_or_none([]) is None
           ^^^^^^^^^^^^^^^^
helpers.py:27: in mean_or_none
    return sum(values) / len(values)
           ^^^^^^^^^^^^^^^^^^^^^^^^^
E   ZeroDivisionError: division by zero
=========================== short test summary info ============================
FAILED test_baseline.py::test_page - assert [30, 40] == [10, 20]
FAILED test_baseline.py::test_discount - assert 40 == 45
FAILED test_baseline.py::test_cache_key - AssertionError: assert '7' != '7'
FAILED test_regressions.py::test_p95_twenty_values - assert 20 == 19
FAILED test_regressions.py::test_whitespace - AssertionError: assert 6 == 2
FAILED test_regressions.py::test_empty_mean - ZeroDivisionError: division by ...
6 failed, 5 passed in 0.01s