Why does `setup.py develop` not work?

Question

I would like to install my Python module in development mode. As I have seen in many examples `python setup.py develop` is supposed to do that. But the `develop` command does not exist for my `setup.py` file: ``` from distutils.core import setup from distutils.extension import Extension from Cython.Build import cythonize from Cython.Distutils import build_ext import os src = ["_NetworKit.pyx"] # list of source files modules = [Extension("_NetworKit", src, language = "c++", extra_compile_args=["-fopenmp", "-std=c++11", "-O3", "-DNOGTEST"], extra_link_args=["-fopenmp", "-std=c++11"], libraries=["NetworKit-Core-O"], library_dirs=["../"])] for e in modules: e.cython_directives = {"embedsignature" : True} setup(name="_NetworKit", cmdclass={"build_ext": build_ext}, ext_modules=modules, py_modules = ["NetworKit.py"]) ``` (Note the Cython extension module). What am I missing? Do I need to modify the `setup.py`?

Accepted Answer

The `develop` command is a part of setuptools. Install setuptools and replace the first line in `setup.py` with this:

```
from setuptools import setup
```

Why does `setup.py develop` not work?

Solution

Problem