Even if numba, cython (and especially cython.inline) exist, in some cases, it would be interesting to have inline C code in Python. Is there a built-in way (in Python standard library) to have inli...

I'm new to Cython, but got it working by following this basic guide from the official docs: All it says is: "Cython has a way to visualise where interaction with Python objects and Python’s C-...

I have two numpy arrays of the same length that contain binary values import numpy as np a=np.array([1, 1, 1, 1, 1, 1, 0, 1, 1, 0, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 0]) b=np.array([1, 1, 1, 1, 0, 1, 1...

I am unable to speed up computations with my cythonized version of a function bulk_phone_finder defined below (that uses phonenumbers pypi library) to : from phonenumbers import PhoneNumberMatcher ...

I compile a python c module extension in Python 3.6. It works well in Python 3.6 environment but does not work in Python 3.7 and 3.8 environments, it gets error cannot import name 'cygrpc'. I wonde...

I am trying to link to my own C library from Cython, following the directions I've found on the web, including this answer: Using Cython To Link Python To A Shared Library I am running IPython th...

According to the documentation it is possible to use C header files generated from Cython. I have followed the Hello World example with no problem and now I want to try something different. I want ...

I coerced Cython to use clang by specifying the CC environment variable: import os os.environ['CC'] = 'clang' I have a standard build: EXT_MODULES = [Extension('example.src.ex', sources=['example...

I’m trying to follow this tutorial on using pyx, pxd, and cimport to create and use extension types. When compiling the Cython file in terminal, I am getting an error that I don’t know how to corr...

I know that a Numba-jitted function calling another jitted function will recognize this and automatically use a fast C calling convention rather than going through the Python object layer, and ther...

I have a file in my project which I would like to compile for performance reasons: mylibrary/myfile.py How to achieve this with Poetry?

I implemented a pure Python code in object-oriented style. In some of the methods there are time intensive loops, which I hope to speed up by cythonizing the code. I am using a lot of numpy arrays...

The %%cython command is pretty handy to create cython functions without building and using a package. The command has several options but I couldn't find a way to specify compile time environmental...

I have a C++ class. It's made up of one .ccp file and one .h file. It compiles (I can write a main method that uses it successfully in c++). How do I wrap this class with Cython to make it availabl...

%%cython from libc.stdio cimport printf def test(): printf('abc') If I run test(), it doesn't print anything. Currently I am doing something stupid as: cdef char s[80] sprintf(s, 'something') ...

I'm creating a setup.py file for a project with some Cython extension modules. I've already gotten this to work: from setuptools import setup, Extension from Cython.Build import cythonize setup(...

I am building a package in Cython. I am using the following as the structure for setup.py: from distutils.core import setup from distutils.extension import Extension from Cython.Build import cytho...

Had a basic question after reading the Cython documentation on classes, but I thought to get it clear. Here is a sample code from the Cython documentation: cdef class Rectangle: cdef int x0, y0 ...

Code block 1 using __init__ %%cython -3 cdef class c: cdef: int a str s def __init__(self): self.a=1 self.s="abc" def get_vals(self): return self.a,self.s m=c() print(m.get_vals()...

I have a C function that involves decompressing data using zstd. I am attempting to call that function using Cython. Using this page from the docs as a guide I can compile and run the code below wi...

I have a Python program which calls some Cython code which in turn wraps some raw C++ code. I would like to see how much memory the base C++ code is allocating. I've tried the memory_profiler modul...

I am trying to package my project code into a an executable binary using Cython and PyInstaller libraries. My code directory looks like this: The main.py is the main code which imports the logic ...

I am trying to build a Python multi-file code with PyInstaller. For that I have compiled the code with Cython, and am using .so files generated in place of .py files. Assuming the 1st file is main...

Following is a Cython code snippet currently used in scikit-learn binary trees, # Some compound datatypes used below: cdef struct NodeHeapData_t: DTYPE_t val ITYPE_t i1 ITYPE_t i2 # build t...

I have a C++ program and it has sort of plugin structure: when program starts up, it's looking for dll in the plugin folder with certain exported function signatures, such as: void InitPlugin(Func...