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sympy__sympy-17630

Based on the issue description, I can analyze the problem and provide a fix. The issue is clear from the error traceback:

  • Skills
  • AI research
  • 2

What it does and how to use it

A skill that teaches Claude Code to do ai research tasks well. It is packaged knowledge the model uses whenever it is relevant.

  1. Install the skill (command above).
  2. In Claude Code, describe what you need - the skill turns on by itself when the context fits.
  3. No commands to memorize: you talk in plain language and the skill does the rest.

Install (Claude Code)

mkdir -p .claude/skills/sympy-sympy-17630 && curl -fsSL https://doutorai.pt/data/lib/skills__sympy-sympy-17630.md -o .claude/skills/sympy-sympy-17630/SKILL.md

Paste this command into the terminal, in your project folder, and the component installs automatically.

Content

Based on the issue description, I can analyze the problem and provide a fix. The issue is clear from the error traceback:

1. When `ZeroMatrix` blocks are multiplied, they become `Zero` (scalar) objects
2. The `colblocksizes` and `rowblocksizes` properties try to access `.cols` and `.rows` attributes on blocks
3. `Zero` doesn't have these attributes, causing the `AttributeError`

The fix needs to handle the case where a block might be `Zero` instead of `ZeroMatrix`. Looking at the error and the problem description:

- `colblocksizes` at line 80 does: `return [self.blocks[0, i].cols for i in ra

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