As suggested here, I have succesfully installed Microsoft Visual C++ Compiler for Python 2.7 to compile some Cython code, but:
from distutils.core import setup
from Cython.Build import cythonize
setup(ext_modules = cythonize("module1.pyx"))
still produces:
error: Unable to find vcvarsall.bat
How to compile Cython code with Python 2.7 (for example on Windows 7 x64)?
Note: I already carefully read the question error: Unable to find vcvarsall.bat but the main answers (including modifying msvc9compiler.py) didn't solve it.
I spent hours on this, and the information was not easily findable in error: Unable to find vcvarsall.bat, that's why I post it here with the "answer your own question" feature:
Step 1: Install Microsoft Visual C++ Compiler for Python 2.7
Remark: You don't need to modify msvc9compiler.py as often suggested in many forum posts
Step 2: Just add import setuptools that will help Python and "Microsoft Visual C++ Compiler for Python 2.7" work together.
import setuptools # important
from distutils.core import setup
from Cython.Build import cythonize
setup(ext_modules=cythonize("module1.pyx", build_dir="build"),
script_args=['build'],
options={'build':{'build_lib':'.'}})
Note: the script_args parameter allows to run this setup.py with just python setup.py (i.e. CTRL+B in your favorite editor like Sublime Text) instead of having to pass command-line arguments like this: python setup.py build.
It works!
Python >= 3.5
I wanted to comment on @Basj (https://stackoverflow.com/a/53172602/6596203) answer but I couldn't so I apologize. I just want to add to @Basj answer for people using Python >= 3.5, instead of Microsoft Visual C++ Compiler for Python 2.7, you can install just the C++ in this installer Build Tool for Visual Studio 2019 or you can simply install that with Chocolatey.
