Menu

Individual skill

openpyxl-merged-cell-safe-write

Safe pattern for writing values to merged cells in openpyxl spreadsheets

benchmarks/gdpval/skills/openpyxl-merged-cell-safe-write/SKILL.md

Read pinned source

Source commit 38277815ed44a53d757973c2bc4454c3b6426698

What was checked

Matches the observed repository HEAD
Yes
Scanner rules are current
Yes
Repository scan complete
No
Skill scan complete
No
Observed behavior
Network or broad shell
Last checked
Nov 2, 2026

These are observations at the recorded commit, not a guarantee of safety. Review the source before running it.

Install this skill

Choose an agent in your Stack or copy a command below. Commands fetch the pinned commit and copy only this skill directory. Existing destinations are refused. Copying a command does not install anything.

An install command is unavailable: current rules, complete repository and skill scans, an eligible behavior level and a permitted license are required.

Repository context

Repository stars (not skill ratings)
7,927
Repository last updated
Nov 6, 2026
License
MIT

Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.

Files and excerpt

File metadata and permitted, redacted excerpts come from the recorded scan. Source links are pinned to that commit.

Browse files
Read excerpt

# OpenPyXL Merged Cell Safe Write Pattern

## Problem

When creating formatted spreadsheets with openpyxl, merging cells and then assigning values to them causes `MergedCell` errors. This is a common pitfall that can consume multiple failed iterations.

## Core Rule

**Always assign values to the top-left cell of a merge range BEFORE applying the merge**, or avoid assigning to merged cells entirely after the merge is applied.

## Correct Pattern

```python
from openpyxl import Workbook