[perf-scan] 2026-10-11 -- performance opportunities found
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Assessment
- Difficulty
- 1/5
- Estimated time
- Under an hour
- Newbie friendliness
- 78/100
- Issue type
- Refactor
- Clarity
- Clearly specified
- Activity status
- Active
- Tech stack
- git, python
- Domain
- cli, performance
Research direction
The module-level import from git.exc import GitCommandError is at line 62 of src/apm_cli/commands/update.py, and the only use is the except (GitCommandError, OSError) handler around line 178. Confirm that the name is not used anywhere else in the file, then move the import into the function that contains that handler. Done means the import no longer runs at module load and the update command's error handling still refers to the same exception.
Written by the indexing model from the issue text.
Description
Performance Scan - 2026-10-11
Automated scan of src/apm_cli/ for algorithmic performance anti-patterns.
1 finding(s) identified.
Findings
[E] Heavy top-level import -- src/apm_cli/commands/update.py:62
- Current:
from git.exc import GitCommandErrorat module level imports GitPython (which also probes for the git executable) on every CLI invocation, even for unrelated sub-commands. It is used only in oneexceptclause (line ~178). - Proposed: import deferred until the update command body runs; no startup cost for other commands.
- Fix: Move the import inside the function containing the
except (GitCommandError, OSError)handler. Low priority (startup latency only).
Scan coverage
- src/apm_cli/ (488 files scanned)
- Patterns checked: A (quadratic loops), B (linear scan in loop),
C (unconditional expensive ops), D (redundant config parsing),
E (heavy top-level imports), F (sequential independent I/O) - Note: scan was a targeted sampling; other pattern matches reviewed were not confirmed as genuine concerns.
Generated by Daily Performance Scanner · copilot · auto · 17.9 AIC · ⌖ 0.55 AIC · ⊞ 11.1K · ◷
- expires on Oct 18, 2026, 1:44 AM UTC
- Dominant language
- Python
- Stars
- 4k
- Forks
- 387
- Avg merge
- 2d 19h
- Merged PRs (30d)
- 41
Getting set up
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