Hey Martin, great question—even if the answer leans toward "no", it’s totally worth diving into because it brings up some really useful details about how PowerPoint handles macros and what python-pptx can (and can’t) do. Let’s break this down:

• You can’t inject raw VBA text directly：You’re exactly right about macros being stored in a compiled binary format in .pptm files. When you unzip a .pptm with a simple "Hello World" macro, you’ll find a vbaProject.bin file that’s not plain text—this is PowerPoint’s proprietary compiled container for VBA code. There’s no supported way to programmatically write raw VBA strings into this file; reverse-engineering the format isn’t feasible for most use cases.

• python-pptx doesn’t support writing .pptm files：While python-pptx can read macro-enabled .pptm files, it doesn’t have built-in functionality to create or modify the macro-specific parts of these files. It’s designed primarily for working with macro-free .pptx presentations, so you won’t find methods to add or edit VBA code through the library.

• The best practical workaround: Template-based macros：Your idea of using a pre-built .pptm template with existing macros is the way to go here. Here’s how it can work:

  1. Create a base .pptm template that includes all the macros you need (like deleting the first slide, logging notes, etc.)
  2. Use python-pptx to build your presentation using this template as a starting point
  3. Add buttons to your slides by writing custom XML (as you noted) that triggers the pre-existing macros in the template

This approach lets you combine python-pptx’s automation power with macro functionality, though it does require users to build their presentations on top of your template to access those features. It’s the most reliable solution available right now since direct VBA injection isn’t supported.

From what I’ve seen in the python-pptx community, this template method is the go-to for anyone looking to add macro functionality to auto-generated presentations—there aren’t any widely used tools or workarounds that let you inject raw VBA text directly via python-pptx.

内容的提问来源于stack exchange，提问作者Martin Packer