335 questions
1
vote
1
answer
46
views
Trying to build Python extension (module) with Dlang and pyd with dub + ldc2
I am trying to build a Python extension (module) with D and the pyd (https://github.com/ariovistus/pyd) and dub and ldc2 compiler on Windows.
I have the following dub.sdl:
name "hello"
...
1
vote
0
answers
61
views
How to programmatically set a default Jupyter kernel in VSCode integration tests?
We're developing a VSCode extension that works with Jupyter notebooks and need to run integration tests in CI/CD. The main issue is that when running integration tests, VSCode prompts the user to ...
0
votes
0
answers
82
views
Rendering special characters with Weasyprint
I have an MkDocs site with the pymdownx.keys plugin. The plugin includes formatting for a number of keys along with unicode characters:
When I try to convert the page to PDF using Weasyprint, the ...
- 1,126
0
votes
1
answer
216
views
Compilation Error installing pyo on mac os x on m3
I'm puzzled by the following issue. I have a Mac M3 with the following characteristics.
I have Python 3.12.6. I have been trying to install pyo (https://pypi.org/project/pyo/1.0.1/). After many ...
- 1
0
votes
0
answers
73
views
Right way to avoid multiple definition error when building Python C++ extension with MSVC BuildTools
A python C++ extension has the following structure:
/myextension
|_____basecode
| |__header.h
| |__functions.cpp
|
|_____utilities
| |______utilities.h
| |...
- 919
1
vote
0
answers
243
views
How to wrap a PyDict in PyO3 with a constructor that takes a new parameter?
I am using PyO3 (v0.22.2) / Rust to write something a little similar to defaultdict, but with an integer default rather than a callback:
>>> from my_package.pyo3_ext import PyDefaultDict
>...
- 13.9k
0
votes
0
answers
32
views
Gecode Attribute Not Available In Phonenumbers Geocoder Library
I am working on PYCharm IDE application for getting address from latitude and longitude and I have also installed phonenumber and geocoder library to the project in PYCharm IDE but unfortunately ...
- 99
1
vote
0
answers
35
views
Python C++ extension DLL is not imported in python interpreter
I have written a Python extension in C/C++ to wrap my code for Python.
I followed CPython documentation in the parts of C/C++ functions each module should provide
For example, my module contains:
/* ...
- 11
2
votes
0
answers
47
views
Python C Extension When to Free Internal Free List?
Some Python objects - for example, instances of int, float and dict - use a free list to speed up allocations. The C API provides methods to clear such free lists.
By hardcoding PyXXX_ClearFreeList ...
- 103
0
votes
0
answers
263
views
Python C Extension - Access to PyInterpreterState Internal Data Structure
I recently found that I could get the Python interpreter state by PyInterpreterState_Get() C-API. However, when I tried to access its members defined by struct _is in the extension code, during the ...
- 437
0
votes
1
answer
84
views
How to properly deepcopy linked objects in C Extension
In Python, I have a pair of classes like
class Internal:
def __init__(self, ref):
self.ref = ref
class External:
def __init__(self):
self.storage = [1,2,3]
self.int = ...
- 1,558
2
votes
1
answer
150
views
Understanding memory leak with C++ extension for python
I have been struggling to understand what I am doing wrong with the memory management of this this C++ function for a python module, but I don't have much experience in this regard.
Every time I run ...
- 37
3
votes
0
answers
525
views
How do you tell setuptools to build an extension for --debug when using pyproject.toml / PEP 518
I have created a Python project with a C++ extension using pyproject.toml (PEP 518, PEP 517, PEP 621, PEP 660, etc.). I'm sure I could be doing some things better, but generally speaking it's working ...
- 3,258
1
vote
1
answer
440
views
No module named 'pybind11' when using poetry
Used pybind11 in the past without issue pulled in as a submodule and used via cmake. Now working on another project that uses poetry, and so wanted to make everything poetry-centric.
Trying to build ...
- 16.3k
2
votes
2
answers
10k
views
"The Pylance server crashed 5 times in the last 3 minutes"? (circa v2023.10.40 of the Pylance VS Code extension)
Every time I launch VS code, the Pylance server crashes 5 times in in 3 minutes, or so the output terminal says. The server stops trying to relaunch and I lose out on a handful of features as a result....
- 21
0
votes
0
answers
459
views
cannot activate the 'ros' extension because it depends on an unknown 'ms-vscode.cpptools' extension. on code server
So I was trying to learn ROS2 iron on the Ubuntu Server. I installed the Ubuntu server on a Raspberry Pi 4 and I used my laptop to SSH into the Raspberry Pi 4. Next, I installed ROS2 iron on the ...
0
votes
0
answers
205
views
VSCode: "fatal error: Python.h: No such file or directory" even with python-dev installed
Using VSCode (which I'm quite new to) on Ubuntu 20.04, I wish to build a C-extension (actually C++ extension) to Python.
I'm trying to build the following MWE:
#include <numpy/arrayobject.h>
int ...
- 1,864
0
votes
1
answer
1k
views
Build python wheel with precompiled shared library
When building a wheel of a Python extension module, how can I tell setup() to use an existing/precompiled shared library?
For awful horrible reasons, the SO/DLL has to be compiled by a build system ...
- 542
3
votes
6
answers
43k
views
How to fix this issue "ERROR: Failed building wheel for insightface"
note: This error originates from a subprocess, and is likely not a problem with pip.
ERROR: Failed building wheel for insightface
Failed to build insightface
ERROR: Could not build wheels for ...
- 31
0
votes
1
answer
620
views
Undefined symbol at runtime. Import Python C++ extension
I have a python package (my_python_package), part of which is a C++ extension (my_ext) with a single function (my_ext_func). The extension depends on my C++ library (libmycpp) and my C++ library ...
0
votes
0
answers
61
views
How to type `PyObject* const*` in Cython
Let's take this as an example: reference
The definition of the type _PyCFunctionFastWithKeywords is:
PyObject *_PyCFunctionFastWithKeywords(PyObject *self,
...
- 841
1
vote
0
answers
18
views
Web Scraping using pythn Jupyter Notebook [duplicate]
I have been attempting web scraping, but I encountered an error that states,
"We're sorry but default doesn't work properly without JavaScript enabled. Please enable it to continue."
I have ...
- 19
2
votes
1
answer
1k
views
Python Wheel that includes shared library is built as pure-Python platform independent none-any
I wish to use some C and CUDA code in my Python package (which I then call using ctypes). Because of the CUDA, it doesn't seem to be easy to use the traditional approach of a setuptools Extension, so ...
- 633
0
votes
1
answer
248
views
Cython: Unable to cimport from `.pxd` file
I have a simple project directory and some simple files which failed to compile.
Directory structure:
cythonize: ROOT
|___ cythonize
|___ __init__.pxd
|___ __init__.py
|___ first.pxd
|...
- 841
3
votes
1
answer
2k
views
Building Python C module on Windows
I am trying to build a 'C' python extension on Windows, the core C code compiles absolutely fine, but I am unable to build the python module using setuptool as I am getting
mandlebrot.c(36): fatal ...
- 75
-1
votes
1
answer
901
views
segmentation fault Segfault python extension in c++
This extension is used to search data in a linked list and return it as a nested tuple of lists.[(ele1,ele2,),...]
However when the program runs for a period of time, segment fault will occur. I know ...
5
votes
5
answers
2k
views
How to create python C++ extension with submodule that can be imported
I'm creating a C++ extension for python. It creates a module parent that contains a sub-module child. The child has one method hello(). It works fine if I call it as
import parent
parent.child.hello()
...
- 316
0
votes
1
answer
322
views
How to write a simple VTune wrapper script on Windows?
Question
How do I write a wrapper script for VTune for Windows?
The documentation provides a simple wrapper script example for bash:
#!/bin/bash
# Prefix script
echo "Target process PID: $...
- 2,740
0
votes
1
answer
2k
views
How does attaching to a process work in VS Code debugger extensions?
I am trying to understand what happens / is supposed to happen when I attach to a process with a debugger in VS Code.
I understand that I can create attach launch configurations in VS Code, and when I ...
- 2,740
0
votes
0
answers
71
views
Get the (C) size of a (C) type in a Python extension
I'm writing a C extension for Python and need to pass the size of a C type to the compilation. So I'll want to do
extra_compile_args = ['-DSIZEOF_MYTYPE=32']
in my setup.py. My question is: how can ...
- 1,120
1
vote
0
answers
584
views
How to install python extension "ms-python.python" in local linux server to debug the scrip in VScode
I ssh the server in VS code and when I install python extension in the VScode, I got "Error: unable to get local issuer certificate". May I know how can I install python extension in the ...
- 539
1
vote
1
answer
299
views
Get notification in a VS Code extension when the Python interpreter is changed
I am writing a VS Code extension that depends on the currently set Python interpreter. When I change the Python Interpreter via the VS Code UI, the extension needs to refresh and get the latest Python ...
- 21
0
votes
1
answer
40
views
How does VSCode's Python Extension use the Paths you set?
I'm troubleshooting an issue with VSCode's Python extension trying to load the wrong version of Python.
I'd like to know how this extension uses the Path variables you give it in its settings. For ...
- 1,146
1
vote
1
answer
185
views
How does VSCode's Python Extension handle a missing .env file?
I'm trying to troubleshoot an issue with VSCode's Python extension loading the wrong version of Python and I'd like to rule out incorrect environment variables being an issue.
In the Python Extension'...
- 1,146
0
votes
0
answers
93
views
Nested extension module cannot be imported
I am trying to import an extension module contained inside a nested package. For the purposes of this example, it's the only element of the root module, but the real case has others. When I attempt to ...
0
votes
1
answer
170
views
std::cout error when using METH_VARARGS or METH_VARARGS | METH_KEYWORDS
I have created a python extension with C++. Generally, it works fine, and I can use the extension from Python to call C++ functions. When I define a method using the METH_O or METH_NOARGS macros, ...
1
vote
1
answer
155
views
PyPy memory leak with custom C++ extension?
I am trying to write a C++ extension with support for CPython and PyPy.
My extension involves creating some custom types that support the call interface.
However, I appear to be getting memory leaks ...
- 147
17
votes
6
answers
24k
views
VS Code: "The isort server crashed 5 times in the last 3 minutes..."
I may have messed up some environmental path variables.
I was tinkering around VS Code while learning about Django and virtual environments, and changing the directory path of my Python install. While ...
- 165
1
vote
1
answer
206
views
Kinesis WebRTC C SDK - Convert Frames to Images
I managed to wrap kvsWebRTCClientViewer in a python C extension and I also managed to expose frame data to python via callback function as bytes array but I don't understand how to convert these ...
- 507
0
votes
0
answers
75
views
Create pip-installable package with C extension pulled from Github
I have a python library that I'm trying to package into something pip-installable. It depends upon a C library (shoco). I'd like to avoid packaging the actual source code to shoco in my own package if ...
- 15k
3
votes
3
answers
24k
views
Error while fetching extension. XHR failed [duplicate]
This is my first time installing and using VSCode, and when I try to install a python extension inside a VSCode application I get the error "Error While fetching extension. XHR failed" . How ...
1
vote
1
answer
1k
views
How to modernize code that uses deprecated NumPy C API?
The following C or C++ code, intended for use in a Python extension module, defines a function f that returns a NumPy array.
#include <Python.h>
#define NPY_NO_DEPRECATED_API NPY_1_7_API_VERSION
...
- 8,457
2
votes
0
answers
155
views
Viewing Data in Python Extensions GDB
Suppose I have a class:
class RawMessage(NamedTuple):
data: Dict
timestamp: float
...
The keys and values in this dictionary are probably all integers, but I don't want to state that with ...
- 43
0
votes
0
answers
520
views
Visual studio Python extension mixed mode debugging on CMake project
I'm trying to create a C++ Python extension using pybind11 and CMake, and would like to take advantage of visual studio's mixed mode debugging (see) for developing the extension.
I tried following the ...
- 1
1
vote
1
answer
581
views
Programmatically obtain Python install paths in prefix, without distutils
As distutils is being removed from Python in the > 3.10 versions, and setuptools will not be added to the stdlib, I want to replace an existing setup.py recipe for building/installing a C++ library ...
- 1,141
1
vote
2
answers
1k
views
Debugging Python Extensions written in C
I'm pretty familiar with writing C code and I'm comfortable in writing python code. I'm trying to learn how to write modules in C that can be called from Python-3.9.X on OSX 10.15.7. I've gotten a ...
- 5,237
0
votes
0
answers
237
views
How to get the arguments for a Python c-extension function?
I'm working on a project that runs in a Python environment with numerous C extensions included that are used to interface with the software that the project runs under. Unfortunately, the ...
- 2,081
1
vote
0
answers
87
views
Linker error despite symbols located in linked library
I am having difficulty importing a python extension module that depends on a separate shared library that I am building via a separate build system. When I attempt to import the module, I get an ...
1
vote
0
answers
100
views
azure python extension fail on 'conflict' in deployment ARM
I am using template for azure web app . net deployment. I need python extension to deploy as well after MSbuild is deployed. This script works when resource group and app service plan is new, but it ...
- 170
0
votes
1
answer
1k
views
how does python package links to dll (.so) files
I am creating a python package based on this repo. The package has few cpp files which are compiled when I build the package using setup.py and running pip install . This generates _C.cpython-36m-...
