astropy__astropy-14995
Based on my analysis of the issue, I now have enough information to provide the correct patch. The bug is in astropy/nddata/mixins/ndarithmetic.py where the condition elif operand is None: should be elif operand.mask is None:.
- 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.
- Install the skill (command above).
- In Claude Code, describe what you need - the skill turns on by itself when the context fits.
- No commands to memorize: you talk in plain language and the skill does the rest.
Install (Claude Code)
mkdir -p .claude/skills/astropy-astropy-14995 && curl -fsSL https://doutorai.pt/data/lib/skills__astropy-astropy-14995.md -o .claude/skills/astropy-astropy-14995/SKILL.mdPaste this command into the terminal, in your project folder, and the component installs automatically.
Content
Based on my analysis of the issue, I now have enough information to provide the correct patch. The bug is in `astropy/nddata/mixins/ndarithmetic.py` where the condition `elif operand is None:` should be `elif operand.mask is None:`.
However, I need to also handle the case where `operand is None` (the operand itself doesn't exist). Looking at the first condition `if self.mask is None and operand is not None:`, it checks both `self.mask is None` AND `operand is not None`. The second condition should check when the operand's mask is None OR when the operand itself is None.
--- a/astropy/nddata/
- 🔒 Full content on the Pro plan (€7.99/month) -Need help with Claude Code?
Ask Dr AI - it explains things simply.
Need a tailor-made solution?
Not sure where to start with AI in your business? Get a free assessment and a tailored plan - no commitment.
Save hours every week with AI, no hassle
Doutor AI gives you 1,859 ready-to-copy AI prompts, by industry and in plain English - plus a complete technical library for those who want to go further.