How can I import a C++ library (in this case libpqxx) into the .pxd file? I need it here to cimport it into the .pyx file. Blah.pxd cdef extern from "../src/adolet_client.cpp": pass cdef extern from "../include/adolet_client.h": cdef pqxx::connection connect(const char* dbname) Source: Python..
Category : cython
How do you use a C++ library (e.g. libpqxx) in Python using Cython? More specifically, how do you import libpqxx into the .pxd file? Source: Python..
I have a memory view of a 2-dimensional Cython array defined as cdef unsigned char[:,:] store = view.array( shape=(n, 141), itemsize=sizeof(unsigned char), format="B", ) , where n is the number of "rows" I have. For the sake of the example, lets assume n=2. Each row is a Python bytes object of size 141, which I ..
Assume we have a cython class A with a pointer to float like in # A.pyx cdef class A: cdef float * ptr We also have a cython class B in another module which needs access to the data under ptr: # B.pyx cdef class B: cdef float * f_ptr cpdef submit(self, ptr_var): self.f_ptr= get_from( ..
Recently, I use Vscode to debug into a python package installed in standard path site-packages. I saw code as following which I don’t know. This package uses Cython. Any idea on how to view it in original readable code? LOAD_DEREF(self), LOAD_METHOD(_checkTrackerIntegrity), CALL_METHOD, POP_TOP LOAD_DEREF(self), LOAD_ATTR(tic), LOAD_METHOD(clear), CALL_METHOD, POP_TOP LOAD_DEREF(self), LOAD_ATTR(toc), LOAD_METHOD(clear), CALL_METHOD, POP_TOP Source: Python ..
I make hello.pyx file. #hello.pyx def hello(): print("Hello world") Also, files hello.c and hello.so were created with the following command. $cython hello.pyx $gcc -shared -pthread -fPIC -fwrapv -O2 -Wall -fno-strict-aliasing -lm -I/usr/include/python3.8/ -o hello.so hello.c And so file was created successfully. However, I created a test.py file in the same directory and called the hello ..
Cython allows to declare a vector from the c++ standard library as public but not a queue, why is that? # distutils: language = c++ from libcpp.vector cimport vector from libcpp.queue cimport queue cdef class MyClass cdef public vector[int] var1 cdef public queue[int] var2 When trying to build an extension – setup(ext_modules = cythonize(‘filename.pyx’, language_level=’3′)) ..
The problem is I can’t import my Cython module to jupyter notebook. I no clues but wonder if this has something to do with multiple conda envs I used. Inside a cythonDir, I wrote a .pyx file with a single function defined and it was compiled successfully via a setup.py. Strangely, I can’t import it ..
I’m implementing some light tools in cython, run into a problem that I can’t get bytes result to python from a cpdef function. With PyBytes I can pass in bytes, which is no problem, but if I want to return bytes, I will face the problem that ‘x00’ cannot be passed, for example in the ..
I made ref_seg_calc_v3.pyx and ref_seg_calc_v3.c on my computer and moved those to work station(offline). Then this error occurred. All files are in right directory. What would be the problem..? Source: Python..
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