Cython manual

Run the cython command-line utility manually to produce the.c file from www.doorway.ru file, then manually compiling the.c file into a shared object library www.doorway.ru suitable for import from Python. (This is mostly for debugging and experimentation.) Use the [Sage] notebook which allows Cython code inline. Migrating from Cython to Limitations. Differences between Cython and Pyrex. Typed Memoryviews. Implementing the buffer protocol. Using Parallelism. Debugging your Cython program. Cython for NumPy users. Pythran as a Numpy backend. Cython code is compiled using the cython source-to-source compiler to create C or C++ code, which in turn can be compiled using a C compiler. This allows to create extensions that can be imported from Python or executables. The main performance gain Cython can reach in contrast to pure Python stems from bypassing the CPython API.

Cython is an optimising static compiler for both the Python programming language and the extended Cython programming language (based on Pyrex). It makes writing C extensions for Python as easy as Python itself. If your code currently performs a lot of loops in Python, it might benefit from compilation with Cython. This document is intended to. Ways to build Cython code. To compile Python code .py) or Cython code .pyx) you need: Cython, Python and a C compiler; you can use: distutils. www.doorway.ru script (likely required anyway) pyximport. on-the-fly build + import (for experiments) Sage notebook. web app that supports writing and running Cython code; cython www.doorway.ru + manual C. Python/C API Reference Manual¶. This manual documents the API used by C and C++ programmers who want to write extension modules or embed Python. It is a companion to Extending and Embedding the Python Interpreter, which describes the general principles of extension writing but does not document the API functions in detail.

Cython gives you the combined power of Python and C to let you write Python code that calls back and forth from and to C or C++ code natively at any point. easily tune readable Python code into plain C performance by adding static type declarations, also in Python syntax. Cython is based on Pyrex, but supports more cutting edge functionality and optimizations. The Cython language is very close to the Python language, but Cython additionally supports calling C functions and declaring C types on variables and class attributes. This allows the compiler to generate very efficient C code from Cython code. Cython is a source code translator based on Pyrex, but supports more cutting edge functionality and optimizations. The Cython language is a superset of the Python language (almost all Python code is also valid Cython code), but Cython additionally supports optional static typing to natively call C functions, operate with C++ classes and.