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astropy__astropy-7746

Based on the error traceback provided in the issue, I can understand the code structure. Let me analyze the problem:

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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.
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Install (Claude Code)

mkdir -p .claude/skills/astropy-astropy-7746 && curl -fsSL https://doutorai.pt/data/lib/skills__astropy-astropy-7746.md -o .claude/skills/astropy-astropy-7746/SKILL.md

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

Content

Based on the error traceback provided in the issue, I can understand the code structure. Let me analyze the problem:

1. The error occurs when passing empty lists `[], []` to `wcs.wcs_pix2world([], [], 0)`
2. The error `InconsistentAxisTypesError` occurs in the underlying wcslib C code at `wcsp2s()`
3. The issue is that empty arrays are being passed to the underlying C library without being checked first

Looking at the traceback:
- `wcs_pix2world` calls `_array_converter`
- `_array_converter` calls `_return_list_of_arrays`
- `_return_list_of_arrays` calls the lambda `func(xy, origin)` which i

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