pandas-data-wrangling SKILL.md skillA
pandas-data-wrangling from marielynneblock/arcanum-artifex is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add marielynneblock/arcanum-artifex/pandas-data-wrangling@v1.0.0Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- marielynneblock/arcanum-artifex
- Path
skills/data-science/pandas-data-wrangling/SKILL.md- Versions recorded
- 5
- Latest version
- v1.0.0, committed Sep 16, 2026
- First version recorded
- Apr 6, 2026
- Size
- 8,586 bytes
- Repository stars
- 4
- License
- none declared
Use when cleaning, typing, filtering, deduplicating, joining, aggregating, reshaping, or time-aligning tabular data with pandas, or debugging row loss, join fan-out, null handling, index alignment, schema drift, and wrangling memory use. Produces explicit data contracts, reproducible transformations, reject accounting, and invariant checks. Data wrangling only, not exploratory analysis, modelling, feature engineering, visualisation, or orchestration.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Pandas Data Wrangling Turn source tables into correctly typed, reconciled tables with a defined row grain. Work in the team's existing notebook or module and dependency environment. Use pandas and its testing utilities; do not introduce a validation framework, project scaffold, or wrapper library for a task that pandas already handles. **Target: pandas 3.0.5.** Use pandas 3 semantics and APIs as the primary path. Confirm the consuming environment's version; do not silently upgrade it. For an older team environment, adapt only the affected operation and validate there, rather than adding compatibility branches throughout the skill. ## Scope In scope: tabular ingestion/export semantics, schema alignment, parsing, missing values, duplicate resolution, relational and temporal joins, grouping, reshaping, nested-record flattening, and correctness-preserving performance improvements. Profiling is limited to facts needed to wrangle correctly, such as key multiplicity, parse failures, null counts, and memory use. Do not expand into statistical analysis, outlier treatment without a supplied rule, model preparation, feature selection, plotting, deployment, or pipeline …
Read the whole file at its exact version.
How to install
mdr add marielynneblock/arcanum-artifex/pandas-data-wrangling@sha256:f9a310f00fcd4ac1The line at the top of this page pins the label v1.0.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_h6hjz3s3oqsipq2n)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Apr 6, 2026 and Sep 16, 2026, about one every 41 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.0.0 latest | 2026-09-16 | 1fdcc77 | 8,586 B | A | view · diff |
| v1.0.0 | 2026-07-10 | 0115f49 | 1,251 B | A | view · diff |
| v1.0.0 | 2026-07-10 | ffb3400 | 1,251 B | A | view · diff |
| v1.0.0 | 2026-05-15 | b861afb | 1,113 B | B | view · diff |
| v1.0.0 | 2026-04-06 | 05dff34 | 1,235 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (8586 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
marielynneblock/arcanum-artifex · 4 stars · license none declared · pushed 2026-09-19 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_h6hjz3s3oqsipq2n GET https://markdownregistry.com/api/v1/resolve?ref=marielynneblock/arcanum-artifex/pandas-data-wrangling GET https://markdownregistry.com/api/v1/blob/f9a310f00fcd4ac1b47a83dec8933b38ff1ad54c1595c170dbb66b7c008e0e29
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.