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Pptx Author — Build PowerPoint decks headless with python-pptx

Pptx Author — Build PowerPoint decks headless with python-pptx

Beginner10 minutes3 questions2026-08-09
The idea in one minute

Start with meaning, then move to detail.

This lesson explains Pptx Author — Build PowerPoint decks headless with python-pptx as part of getting started with Hermes correctly. You will learn what it does, when it matters, and the smallest safe test that proves it works.

If you are new

If you are new, do not memorize names. Focus on three questions: what problem does this solve, what access does it need, and how can you verify the result?

For hands-on use

For practice, inspect the first example, identify its effects, run it on test data, and compare the result with the source claim.

For specialists

For advanced readers, inspect Skill metadata, Reference: full SKILL.md, Output contract, then verify failure modes and version compatibility.

What do you need first?

No prior experience is required; follow the steps on a safe test setup first.

What will you know?

A clear outcome before you read.

  • Understand Pptx Author — Build PowerPoint decks headless with python-pptx without assumed prior knowledge.
  • Separate the source description from what still needs testing in your environment.
  • Read the first command and identify its inputs and outputs before copying it.
Lesson terms

Short definitions before the details.

Provider
The service that runs or provides access and authentication to a model.
Skill
An instruction bundle that teaches Hermes a repeatable workflow without necessarily adding an external service.
Official page description

Build PowerPoint decks headless with python-pptx

Topic map

What does the source say, and in what order?

  1. 01
    Skill metadata

    Start here to understand the core idea or structure.

  2. 02
    Reference: full SKILL.md

    Read this after the foundation, then connect it to the previous step.

  3. 03
    Output contract

    Read this after the foundation, then connect it to the previous step.

  4. 04
    Setup

    Read this after the foundation, then connect it to the previous step.

  5. 05
    Core conventions

    Read this after the foundation, then connect it to the previous step.

  6. 06
    One idea per slide

    Read this after the foundation, then connect it to the previous step.

  7. 07
    Every number traces to the model

    Read this after the foundation, then connect it to the previous step.

  8. 08
    Use the firm template when one is mounted

    Read this after the foundation, then connect it to the previous step.

  9. 09
    Charts: PNG-from-model beats native pptx charts

    Read this after the foundation, then connect it to the previous step.

  10. 10
    No external sends

    Finish here to verify the result and special cases.

Examples from the official page

Copy only after you understand the effect.

pip install "python-pptx>=0.6"
Revenue: $1,250M (Source: model.xlsx, Inputs!C3)
### Charts: PNG-from-model beats native pptx charts When fidelity matters (the model's chart styling must match the deck exactly), render the chart to PNG from the source workbook and embed the image. Native `pptx.chart` charts are fragile and often don't match firm conventions.
Try it now

Read the first command and identify its inputs and outputs before copying it.

Match every command to your installed Hermes version, review the files and accounts it can reach, and use non-sensitive data for the first test. If this explanation differs from the source, the official source wins.

Knowledge check

Three decisions before completion.

1. What is the source of truth when “Pptx Author — Build PowerPoint decks headless with python-pptx” changes?
2. What is the best way to apply this lesson?
3. What should happen before a step can modify files or an external account?