Missing necessary parentheses and not allowing equality

In my work on https://github.com/certbot/certbot/pull/9585, unittest2pytest rewrote these lines:

self.assertAlmostEqual(mock_sleep.call_args_list[1][0][0], interval - 1, delta=1)
self.assertAlmostEqual(mock_sleep.call_args_list[2][0][0], interval/2 - 1, delta=1)

as

assert abs(mock_sleep.call_args_list[1][0][0]-interval - 1) < 1
assert abs(mock_sleep.call_args_list[2][0][0]-interval/2 - 1) < 1

This is incorrect for two reasons:

1. Parentheses should be added around the 2nd argument to assertAlmostEqual (or the - 1 changed to + 1).
2. assertAlmostEqual doesn't error if the difference between the first two arguments equals the delta argument.

(With that said, I just ran unittest2pytest on 28k lines of real test code and this was the only problem I encountered other than the pytest.raises limitation described at the bottom of your README. Nice work!)

Start by tracing unittest2pytest's rewrite of assertAlmostEqual, using the two transformed examples in the issue as reproduction cases. Check the generated assertion against unittest's delta semantics, including equality, and verify that the output preserves the intended second argument and accepts an exactly equal difference.