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IPython Interactive Computing and Visualization Cookbook

IPython Interactive Computing and Visualization Cookbook - Second Edition

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 line-by-line with line_profiler


Python's native cProfile module and the corresponding %prun magic break down the execution time of code function by function. Sometimes, we may need an even more fine-grained analysis of code performance with a line-by-line report. Such reports can be easier to read than reports from cProfile.

To profile code line-by-line, we need an external Python module named line_profiler. In this recipe, we will demonstrate how to use this module within IPython.

Getting ready

To install line_profiler, type conda install line_profiler in a Terminal.

How do to it...

We will profile the same simulation code as in the previous recipe, line-by-line.

  1. First, let's import NumPy and the line_profiler IPython extension module that comes with the package:

    >>> import numpy as np
        %load_ext line_profiler
  2. This IPython extension module provides an %lprun magic command to profile a Python function line-by-line. It works best when the function is defined in a file...

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