ECO-CMP-PY-013 — Inefficient pandas row iteration¶

Category: Computation (CMP)
Family: Python (PY)
Layer: Code
Tier: 1
Severity: warning
Tags: python, pandas, cpu
Legacy ID: ECO-PY-013

Summary¶

Row-wise pandas iteration is slow compared to vectorized operations.

Vectorization reduces Python-level overhead dramatically.

{
  "confidence": 0.8,
  "notes": "High in analytics/ETL.",
  "type": "cpu"
}

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

{
  "guidance": "Use vectorized ops or apply carefully; avoid iterrows in hot paths.",
  "tradeoffs": "Learning curve / refactor time."
}

{
  "system_layers": [
    "code"
  ]
}