Fix used-before-assignment if conditional imports guarded again when used

[jacobtylerwalls]

Type of Changes

	Type
✓	🐛 Bug fix

Description

Closes #7979

See regression test; fixes false positive in music21.

[github-actions]

🤖 Effect of this PR on checked open source code: 🤖

Effect on music21:
The following messages are no longer emitted:

1. used-before-assignment:
   Using variable 'Stream' before assignment
   https://github.com./cuthbertLab/music21/blob/cddb10409b934779c8b28999730fce0621fc2f7f/music21/stream/core.py#L552

Effect on pandas:
The following messages are now emitted:

1. useless-suppression:
   Useless suppression of 'used-before-assignment'
   https://github.com./pandas-dev/pandas/blob/280fbf6dd472b868e3849e81998db6f266b96514/pandas/core/groupby/indexing.py#L116

The following messages are no longer emitted:

1. suppressed-message:
   Suppressed 'used-before-assignment' (from line 116)
   https://github.com./pandas-dev/pandas/blob/280fbf6dd472b868e3849e81998db6f266b96514/pandas/core/groupby/indexing.py#L116

This comment was generated for commit 386ffe2

[coveralls]

Pull Request Test Coverage Report for Build 3772618211

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 95.445%

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Totals
Change from base Build 3752298849:	0.0%
Covered Lines:	17663
Relevant Lines:	18506

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💛 - Coveralls

[Pierre-Sassoulas]

Elegant !

[github-actions]

The backport to maintenance/2.15.x failed:

The process '/usr/bin/git' failed with exit code 1

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add .worktrees/backport-maintenance/2.15.x maintenance/2.15.x
# Navigate to the new working tree
cd .worktrees/backport-maintenance/2.15.x
# Create a new branch
git switch --create backport-7980-to-maintenance/2.15.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 e6f0bc5d32965eef37e498e15f05914d4275afb5
# Push it to GitHub
git push --set-upstream origin backport-7980-to-maintenance/2.15.x
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-maintenance/2.15.x

Then, create a pull request where the base branch is maintenance/2.15.x and the compare/head branch is backport-7980-to-maintenance/2.15.x.

[Pierre-Sassoulas]

When the primer emits a new useless supression : feelsgood.jpg