Cython: A Guide of Python Programmers by Kurt W. Smith

By Kurt W. Smith

Build software program that mixes Python's expressivity with the functionality and keep an eye on of C (and C++). It's attainable with Cython, the compiler and hybrid programming language utilized by foundational programs reminiscent of NumPy, and well-liked in initiatives together with Pandas, h5py, and scikits-learn. during this functional advisor, you'll how one can use Cython to enhance Python's performance—up to 3000x— and to wrap C and C++ libraries in Python with ease.

Author Kurt Smith takes you thru Cython's features, with pattern code and in-depth perform workouts. If you're simply beginning with Cython, or are looking to move deeper, you'll find out how this language is an important a part of any performance-oriented Python programmer's arsenal.
• Use Cython's static typing to hurry up Python code
• achieve hands-on event utilizing Cython good points to spice up your numeric-heavy Python
• Create new varieties with Cython—and see how briskly object-oriented programming in Python can be
• successfully manage Cython code into separate modules and programs with no sacrificing performance
• Use Cython to offer Pythonic interfaces to C and C++ libraries
• Optimize code with Cython's runtime and compile-time profiling tools
• Use Cython's prange functionality to parallelize loops transparently with OpenMP

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However, Packt Publishing cannot guarantee the accuracy of this information. First published: March 2015 Production reference: 1240315 Published by Packt Publishing Ltd. Livery Place 35 Livery Street Birmingham B3 2PB, UK. , an award-winning firm that specializes in geospatial technology integration and sensor engineering. com and the Twitter feed @SpatialPython, which discuss the use of the Python programming language within the geospatial industry. In 2011, Joel reverse engineered and published the undocumented shapefile spatial indexing format and assisted fellow geospatial Python developer, Marc Pfister, in reversing the algorithm used, allowing developers around the world to create betterintegrated and more robust geospatial applications involving shapefiles.

You will learn how to place reference elements on a map as well as design elements such as logos. Chapter 7, Interacting with the User, teaches you how to control QGIS GUI elements created by the underlying Qt framework in order to create interactive input widgets for scripts, plugins, or standalone applications. These recipes target actual tasks that geospatial analysts or programmers encounter on the job. Many of these recipes demonstrate multiple concepts within a single recipe, which you may find useful for a variety of tasks.

The topics covered include measuring, loading data from a database, filtering data, and other related processes. This chapter will also teach you how to convert data into different formats, change projections, simplify data, and more. This chapter highlights the capability of QGIS as a raster processing engine and not just a vector GIS. It includes recipes to access external web services and build custom map tools. You will learn how to place reference elements on a map as well as design elements such as logos.

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