How does one to return a malloc array pointer (or numpy array pointer) in cython back to python3, efficiently. The cython code works perfectly as long as I don't return the array pointer I would ...

I'm trying to install eth-brownie using 'pipx install eth-brownie' but I get an error saying pip failed to build package: cytoolz Some possibly relevant errors from pip install: build\lib.win-amd6...

I have used cythonize to compile my python modules. This way speed of code is increased and also the code can not be read by developers. However I have doubts if some python developer can crack tha...

I want to wrap a test project containing C++ and OpenMP code with Cython, and build it with distutils via a setup.py file. The content of my file looks like this: from distutils.core import setup ...

Introductory notes: trying to accelerate Python+Numpy code with Cython is a common problem and this question is an attempt to create a canonical question about what types of operation you can accel...

This setup.py: from distutils.core import setup from distutils.extension import Extension from Cython.Build import cythonize extensions = ( Extension('myext', ['myext/__init__.py', 'myext/algor...

I want to write a function which will take an index lefts of shape (N_ROWS,) I want to write a function which will create a matrix out = (N_ROWS, N_COLS) matrix such that out[i, j] = 1 if and only ...

Is it possible (and how) to use MinGW-w64 for building of C-extensions for Python or embeding Python on Windows? Let's take as example the following cython-extension foo.pyx: print("foo loaded...

I'd like to make the integer constants (ACTIVE_TAG, etc) defined here: //island management, m_activationState1 #define ACTIVE_TAG 1 #define ISLAND_SLEEPING 2 #define WANTS_DEACTIVATION 3 #define D...

I've managed to build some DLLs on Linux that are necessary for my Python extension using MinGW. Something along these lines: from setuptools.command.build_py import build_py class BuildGo(build_p...

I set up my development environment on Fedora 35 and when I run any brownie command such as $ brownie console or even brownie --version I get the following error: Traceback (most recent call last):...

Whenever I try to compile the simpleset cython example helloworld.pyx print "Hello World" setup.py from distutils.core import setup from Cython.Build import cythonize setup( ext_modules = cy...

I coded some program which updates a numpy list in each iteration and does some operations on it. the number of iterations depends on time. for example in 1 second, there might be 1000 to 2500 iter...

I get this warning while running a python program (some basic web automation using selenium): warning: Debugger speedups using cython not found. Run '"/usr/bin/python3.5" "/root/.p2/pool/plugi...

I'm trying to speed up the answer here using Cython. I try to compile the code (after doing the cygwinccompiler.py hack explained here), but get a fatal error: numpy/arrayobject.h: No such file or ...

How can I convert a python list of python strings to a null-terminated char** so I can pass it to external C function? I have: struct saferun_task: saferun_jail *jail saferun_limits *limits c...

I have a Python2.6 program that can load Python modules compiled to .so files using Cython. I used Cython to compile the .py modules to .so files and everything works fine. This is the setup.py f...

I was handed some code that looks like this: In "header.hpp": enum class my_enum_type { val1 = 0; ... } In "header_lib.pyx": cdef extern from "header.hpp": enum my_enum_type: val1 = 0; ....

I am trying to auto update Cython .so modules that my python program uses on the fly. After I download the new module and del module and import module Python seems to still be importing the older v...

I'm creating a project that uses Python OpenCV. My image processing is a bit slow, so I thought I can made the code faster by creating a .pyd file (I read that somewhere). I am able to create a .c...

I'm trying to run Hadoopy, which has a file _main.pyx, and import _main is failing with module not found in __init__.py. I'm trying to run this on OS X w/ standard python 2.7.

I used pyinstaller to generate an executable for a python script, and when trying to run the executable I get the error ModuleNotFoundError: No module named 'scipy.special.cython_special'. I'm not ...

I'm trying to convert a python script into Cython executable binary. It also uses other modules like Tensorflow, pandas, numpy, matplotlib, seaborn, and pickle. Here is my compile command. cython -...

I have a situation where the same Python module is present in the same directory in two different versions; mymodule.py and mymodule.so (I obtain the latter from the first via Cython, but that's ir...

Non-zero exit code (1): _pydevd_bundle/pydevd_cython.c:13:20: fatal error: Python.h: No such file or directory compilation terminated. error: command 'x86_64-linux-gnu-gcc' failed with ...