[perf-scan] 2026-10-06 -- performance opportunities found
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Assessment
- Difficulty
- 2/5
- Estimated time
- 1-3 hours
- Newbie friendliness
- 76/100
- Issue type
- Refactor
- Clarity
- Clearly specified
- Activity status
- Active
- Tech stack
- python
- Domain
- cli, performance
Research direction
Read src/apm_cli/commands/update.py and src/apm_cli/commands/view.py, focusing on the imports and functions identified in the scan. Move the named imports into the functions that use them, then run the relevant tests for both commands and verify ordinary CLI invocations no longer load these imports unnecessarily.
Written by the indexing model from the issue text.
Description
Performance Scan - 2026-10-06
Automated scan of src/apm_cli/ for algorithmic performance anti-patterns.
2 finding(s) identified (both low priority, startup latency).
Findings
[E] Heavy top-level imports -- src/apm_cli/commands/update.py:62-68
- Current: GitPython (
git.exc) andGitHubPackageDownloaderimported at module top level; paid on every CLI invocation. - Proposed: imported lazily only when
apm updateruns. - Fix: Move
from git.exc import GitCommandErrorand the downloader import into the function bodies that use them (lines ~141 and ~178).
[E] Heavy top-level imports -- src/apm_cli/commands/view.py:17
- Current:
GitHubPackageDownloaderimported at module top level; used only at line ~601 in one command function. - Proposed: local import inside that function.
- Fix: Move the import to just before
GitHubPackageDownloader(auth_resolver=AuthResolver()).
Scan coverage
- src/apm_cli/ (487 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)
Generated by Daily Performance Scanner · copilot · auto · 19 AIC · ⌖ 4.99 AIC · ⊞ 11.1K · ◷
- expires on Oct 13, 2026, 1:43 AM UTC
- Dominant language
- Python
- Stars
- 4k
- Forks
- 393
- Avg merge
- 4d 23h
- Merged PRs (30d)
- 62
Getting set up
- No Dockerfile or Docker Compose file
- Has a pull request template
- Read the contributing guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
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