Gain insights into utilizing NumPy for data manipulation and analytics. Learn about implementing concepts in both Python and NumPy through coding challenges and quizzes.

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If you're looking to grow your career in machine learning or data science in this day and age, adding a powerful library to your skill set is an important place to start. In that vein, Python has become one of the most widely used tools in the industry for serious data analytics, and NumPy is probably the most widely used data analytics library. With NumPy, you can manipulate data involving multi-dimensional arrays and matrices (think linear algebra).

Join us as we venture into the vast world of NumPy in this comprehensive course. Each lesson dive into the actual implementation of concepts in both pure Python and then NumPy, exploring how NumPy vectorization compares to traditional Python that uses a procedural and object-oriented approach.

Practice and test yourself along the way with in-browser coding challenges, quizzes, and more.

This course is intended for users who are already familiar with intermediate level Python.

From Python to Numpy

As explained in the [Subclassing ndarray](https://docs.scipy.org/doc/numpy/user/basics.subclassing.html)
documentation, subclassing `ndarray` is complicated by the fact that new
instances of `ndarray` classes can come about in three different ways:

* Explicit constructor call
* View casting
* New from template

However, our case is simpler because we're only interested in the view
casting. We thus only need to define the `__new__` method that will be called
at each instance creation. As such, the `GPUData` class will be equipped with two
properties:

* `extents`: This represents the full extent of the view relatively to the base
  array. It is stored as a byte offset and a byte size.
* `pending_data`: This represents the contiguous *dirty* area as (byte offset,
  byte size) relatively to the extents property.


In this lesson, we will learn how to subclass ndarray to use it in the GPUData class. 

Introduction

Anatomy of an Array

Code Vectorization

Problem Vectorization

Custom Vectorization

Beyond NumPy

Conclusion

Memory-aware Array: Array Subclass in GPUData class