All Questions
Tagged with python-c-api python-c-api
1,390 questions
1
vote
0
answers
86
views
How to let Python runtime load its own Library ZIP file from memory during the initialization
I am using the Python C API and want to embed Python runtime into my app.
The first thing is how to let Python load everything from a memory block, which
stores the Zipped Python standard library ...
- 11
1
vote
0
answers
41
views
pyproject.toml: specify dynamic parameters for C extension
I'm updating a Python package that contains some C extensions.
In a previous version I had all parameters set up in the setuptools setup() function, and now I am porting that setup into a new version ...
- 928
0
votes
0
answers
120
views
Pytsk3 installed with .whl file does not work
I tried to use pytsk3 in my python project to extract files from .img files. Pytsk3 (https://github.com/py4n6/pytsk) is a python binding for the Sleuth Kit. It works fine on my laptop (windows 11 pro ...
0
votes
0
answers
42
views
PyEval_RestoreThread crash when calling matplotlib via Python C API
I have a c++ application that implements its own Python interpreter and console. The user can enter Python code into the console, and that text gets sent to another thread where I make calls to the ...
- 33
0
votes
0
answers
48
views
import Pytorch to create Neural Network. Running Error
I'm using C++/Qt to run my Qt application.
Development Version:
Python: 3.12
Qt: 6.6.3
C++: std 17
Visual Studio 2022
Inside my code, I use Python/C API to run python script like:
PyObject* pModule ...
0
votes
1
answer
62
views
Can a simple mutex pthread_mutex be a replacement for GIL in a multithreaded Python C extension?
Can a simple mutex pthread_mutex be a replacement for GIL in a multithreaded Python C extension? For eg: if I put mutex locks around Py_INCREF or PyMem_Alloc, would that suffice?
Tried using the GIL, ...
- 33
0
votes
0
answers
59
views
How to build C extensions using free-thread python correctly?
I'm working on a C extension project which will produce a .so or .dll & .pyd file for java to load and call. A part of its function is executing given python code, so I'm trying to make it ...
1
vote
1
answer
113
views
Create instance of a imported python class with C API
I want to create an instance of a Python class with the C API.
My specific use case is the PySerial Object. My Python code would be:
import serial
test = serial.Serial()
I couldn't find any clue or ...
- 215
0
votes
0
answers
55
views
Creating spamtuple instead of spamlist from CPython's xxsubtype.c example template
While in the process of learning the C API for CPython I wanted to modify the xxsubtype.c template example that contains spamlist and spamdict to create spamtuple. The does not work directly, I ...
- 55
1
vote
1
answer
31
views
How to dispose off a partially initialized list in Python C-API?
The documentation for PyList_New says that these two APIs are safe before the list is fully initialized: PyList_SetItem() and PyList_SET_ITEM(). But if an error happens in the middle of initializing ...
- 2,038
3
votes
1
answer
96
views
How ro run a C++ application with embedded Python in Debug mode
I'm trying to run the script below in Debug mode (Release works fine). I've linked against python310_d.lib and python310_d.dll which have been built from the source code found here https://github.com/...
0
votes
1
answer
210
views
C++ Python/C API - Is exception returned by PyErr_GetRaisedException normalized?
I'm using a new Python/C API PyErr_GetRaisedException added in 3.12 version to retrieve exception and then using other Python/C APIs to get exception type, value, and traceback details.
Then I'm ...
- 13
1
vote
1
answer
39
views
How to debug a dylib error or compiler bug in a Python-C-API function wrapper?
I am writing a Python wrapper for a C function but I have some very strange behaviour.
The C code is:
static PyObject* f12_wrapper(PyObject* self, PyObject* args, PyObject* kwargs)
{
PyObject* ...
- 482
8
votes
1
answer
353
views
How to make CPython report vectorcall as available only when it will actually help performance?
The Vectorcall protocol is a new calling convention for Python's C API defined in PEP 590. The idea is to speed up calls in Python by avoiding the need to build intermediate tuples and dicts, and ...
- 74.7k
0
votes
0
answers
50
views
PySide6 with Python C API: EXC_BAD_ACCESS error when calling a method with inherited class from QRasterWindow
Environement:
Python version: 3.9.6 (default, May 7 2023, 23:32:45)
PySide6 version: 6.7.0
When I create an instance of QRasterWindow, calling the metric method is ok:
Py_Initialize();
PyObject *...
- 1