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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

Profiling your code easily with cProfile and IPython

The %timeit magic command is often helpful, yet a bit limited when we need detailed information about what takes up most of the execution time. This magic command is meant for benchmarking (comparing the execution times of different versions of a function) rather than profiling (getting a detailed report of the execution time, function by function).

Python includes a profiler named cProfile that breaks down the execution time into the contributions of all called functions. IPython provides convenient ways to leverage this tool in an interactive session.

How to do it...

IPython offers the %prun line magic and the %%prun cell magic to easily profile one or multiple lines of code. The %run magic command also accepts a -p flag to run a Python script under the control of the profiler. These commands accept a lot of options as can be seen with %prun? and %run?.

In this example, we will profile a numerical simulation of random walks. We will cover...

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