ECO-CMP-PY-003 — Repeated invariant computation inside loop¶

Category: Computation (CMP)
Family: Python (PY)
Layer: Code
Tier: 1
Severity: note
Tags: python, cpu
Legacy ID: ECO-PY-003

Summary¶

Recomputing values that do not change inside a loop wastes CPU cycles.

Small wasted work per iteration can become significant in hot loops.

{
  "confidence": 0.6,
  "notes": "Best targeted when loop counts are high.",
  "type": "cpu"
}

{
  "languages": [
    "python"
  ],
  "method": "ast"
}

{
  "guidance": "Move invariant work outside the loop.",
  "tradeoffs": "Minimal."
}

{
  "system_layers": [
    "code"
  ]
}