python

Common Python errors with diagnosis and solutions.

Skills
Development
2

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Install (Claude Code)

mkdir -p .claude/skills/python && curl -fsSL https://doutorai.pt/data/lib/skills__python.md -o .claude/skills/python/SKILL.md

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Content

# Python Error Patterns

Common Python errors with diagnosis and solutions.

## Import Errors

### ModuleNotFoundError

```python
ModuleNotFoundError: No module named 'package_name'
```

**Causes**:
1. Package not installed
2. Virtual environment not activated
3. Wrong Python version
4. Typo in module name

**Diagnosis**:
```bash
# Check if package installed
pip show package_name
pip list | grep package

# Check which Python
which python
python --version

# Check if in venv
echo $VIRTUAL_ENV
```

**Solutions**:
```bash
# Install package
pip install package_name

# If using virtual env
source v

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