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IPython Interactive Computing and Visualization Cookbook

IPython Interactive Computing and Visualization Cookbook

By : Cyrille Rossant
4.4 (7)
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IPython Interactive Computing and Visualization Cookbook

IPython Interactive Computing and Visualization Cookbook

4.4 (7)
By: Cyrille Rossant

Overview of this book

Python is one of the leading open source platforms for data science and numerical computing. IPython and the associated Jupyter Notebook offer efficient interfaces to Python for data analysis and interactive visualization, and they constitute an ideal gateway to the platform. IPython Interactive Computing and Visualization Cookbook, Second Edition contains many ready-to-use, focused recipes for high-performance scientific computing and data analysis, from the latest IPython/Jupyter features to the most advanced tricks, to help you write better and faster code. You will apply these state-of-the-art methods to various real-world examples, illustrating topics in applied mathematics, scientific modeling, and machine learning. The first part of the book covers programming techniques: code quality and reproducibility, code optimization, high-performance computing through just-in-time compilation, parallel computing, and graphics card programming. The second part tackles data science, statistics, machine learning, signal and image processing, dynamical systems, and pure and applied mathematics.
Table of Contents (17 chapters)
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16
Index

Creating custom Jupyter Notebook widgets in Python, HTML, and JavaScript

The ipywidgets packages provides many built-in control widgets to interact with code and data in the Jupyter Notebook. In this recipe, we show how to build a custom interactive widget from scratch, using Python on the kernel side, and HTML/JavaScript on the client side (frontend). The widget just displays two buttons to increase and decrease a number. The number can be accessed and updated either from the kernel (Python code) or the client (browser).

How to do it...

  1. Let's import the packages:
    >>> import ipywidgets as widgets
        from traitlets import Unicode, Int, validate
  2. We create a CounterWidget class deriving from DOMWidget:
    >>> class CounterWidget(widgets.DOMWidget):
            _view_name = Unicode('CounterView').tag(sync=True)
            _view_module = Unicode('counter').tag(sync=True)
            value = Int(0).tag(sync=True)

    This class represents the Python part of the widget. The...

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