If I have the following function and the optional argument myobj is not passed, does myobj remain NULL or is it set to Py_None? static PyObject * myfunc(PyObject * self, PyObject * args) { PyObje...

I'm trying to figure out how to use the Python interpreter from C, and I'm having trouble with PyEval_EvalCode. Basically, I'm writing a C function which takes in an arbitrary string of Python code...

I'm trying to find out what's the reason of error: Unable to find vcvarsall.bat after pip install greenlet. I'd like to set log level used by distutils so that debug messages like log.debug("Unable...

I have a Python extension written in C and I wonder if I should use the file extension DLL or PYD under Windows. (And what would I use in Linux?) Are there any differences (besides the filename)? ...

Let's suppose I have a C extension function that does something that is completely independent of the Python interpreter. Is there any reason not to release the GIL? For example, is there any reas...

When creating a C extension to Python, is it possible to be able to somehow write comments that are exposed as docstrings to users of the extension?

I've read the documentation for the Python C-API, and even written a few extension modules. However, I'm still a bit unclear on the exact semantics when it comes to returning Python objects from a ...

I've created a C extension that I'd like to enable in my Python package (using setuptools) only if a command line option is passed in. What is the easiest way to do this? I can't seem to find any ...

I need to have an array of python objects to be used in creating a trie datastructure. I need a structure that will be fixed-length like a tuple and mutable like a list. I don't want to use a list ...

I'm reading the documentation for Memory Management in Python C extensions, and as far as I can tell, there doesn't really seem to be much reason to use malloc rather than PyMem_Malloc. Say I want ...

I want to run a cpu intensive program in Python across multiple cores and am trying to figure out how to write C extensions to do this. Are there any code samples or tutorials on this?

I have some code to interface Python to C++ which works fine but every time I look at it I think there must be a better way to do it. On the C++ side there is a 'variant' type that can deal with a ...

I've taken a library that is distributed as a binary lib (.a) and header, written some c++ code against it, and want to wrap the results up in a python module. I've done this here. The problem i...

I'm using Python ver 2.6.4 There is a function I have to call from a C library when my extension module exits/is unloaded. What would be the equivalent of atexit for a C extension module?

The Python manual says that you can create modules for Python in both C and C++. Can you take advantage of things like classes and templates when using C++? Wouldn't it create incompatibilities wit...