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Numpy

Skill G1Joshi/Agent-Skills/skills/ai-ml/numpy

NumPy numerical computing with arrays. Use for numerical operations.From its SKILL.md

Install
npx -y skills add G1Joshi/Agent-Skills --skill numpy

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SKILL.md

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NumPy

NumPy is the bedrock of the Python ecosystem. v2.0 (2024) brought the first major ABI change in 15 years, improving performance and API consistency.

When to Use

  • Linear Algebra: Matrix multiplication, eigenvalues.
  • Array Manipulation: Reshaping, broadcasting.
  • Foundation: When building libraries (like PyTorch or Pandas).

Core Concepts

Broadcasting

The magic rule that allows array(3x1) + array(3) to work.

Dtypes

Precision matters. float32 vs float64.

Stride Tricks

Efficient memory views without copying data.

Best Practices (2025)

Do:

  • Check v2.0 compat: Many old libraries broke with NumPy 2.0.
  • Use numpy.strings: New string kernels in v2.0 are much faster.

Don't:

  • Don't write for loops: Always vectorize operations.

References

What ships with it

Read from the repository

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