[buzzedaldrinx86-creator]

Addresses item 1 of #4340. No scoring behaviour changes.

conv_fin_qa_calc_metrics.float_equiv returns 0.0 when either value cannot be parsed as a float, but its runtime warning says float_equiv returning 1.0 because both values are non-floats, and the docstring says the same. Anyone reading the logs to understand a score sees "returning 1.0" while the metric receives 0.0, and "both" while the guard is ss1 is None or ss2 is None.

This PR takes the smallest option from the issue: the warning and the docstring now describe what the code does.

• Warning: float_equiv returning 0.0 because at least one value is a non-float
• Docstring: "If either value cannot be parsed as a float, then it will always return 0.0, regardless of whether the strings match."
• Adds test_conv_fin_qa_calc_metrics.py, which pins the existing return values (equal floats 1.0, different floats 0.0, any non-float 0.0), so a later change to this path is a visible decision.

I did not change the returned value: 1.0 may have been the original intent, but switching it would alter existing ConvFinQA scores, which is a maintainer decision. The except Exception: return float(str1 == str2) fallback is also left alone. Happy to follow up on either if you want a different direction.

Checked

The function bodies from main (63754d05) and from this branch were executed with HELM's imports stubbed: every return value is identical before and after, and the warning now states the returned value (before: stated 1.0, returned 0.0). black --check (line length 120) and flake8 pass on the two files. I have not run the full HELM test suite locally.

🤖 Generated with Claude Code

[buzzedaldrinx86-creator]

Pushed a follow-up after a second look at my own PR. The test I first added only pinned return values, which this PR doesn't change, so it passed on main and didn't guard the fix. The new test patches hwarn and asserts the warning names the value actually returned: it fails on main ("returning 1.0" while 0.0 is returned) and passes on this branch. I also dropped "always" from the docstring line, since non-str inputs like None fall through to the outer except and return 1.0. No scoring behaviour changes.

[buzzedaldrinx86-creator]

Gentle ping on this one when there's time, @yifanmai. It only changes float_equiv's warning text and docstring (no scoring behaviour changes). The added test fails on main and passes on this branch. I understand HELM is in maintenance mode, so if this is out of scope I'm happy for it to be closed, or to trim it further.