---
layout: default
title: "NumPy Core"
nav_order: 15
has_children: true
---

# Tutorial: NumPy Core

NumPy provides the powerful **ndarray** object, a *multi-dimensional grid* optimized for numerical computations on large datasets. It uses **dtypes** (data type objects) to precisely define the *kind of data* (like integers or floating-point numbers) stored within an array, ensuring memory efficiency and enabling optimized low-level operations. NumPy also features **ufuncs** (universal functions), which are functions like `add` or `sin` designed to operate *element-wise* on entire arrays very quickly, leveraging compiled code. Together, these components form the foundation for high-performance scientific computing in Python.


**Source Repository:** [https://github.com/numpy/numpy/tree/3b377854e8b1a55f15bda6f1166fe9954828231b/numpy/_core](https://github.com/numpy/numpy/tree/3b377854e8b1a55f15bda6f1166fe9954828231b/numpy/_core)

```mermaid
flowchart TD
    A0["ndarray (N-dimensional array)"]
    A1["dtype (Data Type Object)"]
    A2["ufunc (Universal Function)"]
    A3["multiarray Module"]
    A4["umath Module"]
    A5["Numeric Types"]
    A6["Array Printing"]
    A7["__array_function__ Protocol / Overrides"]
    A0 -- "Has data type" --> A1
    A2 -- "Operates element-wise on" --> A0
    A3 -- "Provides implementation for" --> A0
    A4 -- "Provides implementation for" --> A2
    A5 -- "Defines scalar types for" --> A1
    A6 -- "Formats for display" --> A0
    A6 -- "Uses for formatting info" --> A1
    A7 -- "Overrides functions from" --> A3
    A7 -- "Overrides functions from" --> A4
    A1 -- "References type hierarchy" --> A5
```

## Chapters

1. [ndarray (N-dimensional array)](01_ndarray__n_dimensional_array_.md)
2. [dtype (Data Type Object)](02_dtype__data_type_object_.md)
3. [ufunc (Universal Function)](03_ufunc__universal_function_.md)
4. [Numeric Types (`numerictypes`)](04_numeric_types___numerictypes__.md)
5. [Array Printing (`arrayprint`)](05_array_printing___arrayprint__.md)
6. [multiarray Module](06_multiarray_module.md)
7. [umath Module](07_umath_module.md)
8. [__array_function__ Protocol / Overrides (`overrides`)](08___array_function___protocol___overrides___overrides__.md)


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