reload module with pyximport?

I have a python program that loads quite a bit of data before running. As such, I'd like to be able to reload code without reloading data. With regular python, importlib.reload has been working fine. Here's an example:

setup.py:

from distutils.core import setup
from distutils.extension import Extension
from Cython.Build import cythonize

extensions = [
    Extension("foo.bar", ["foo/bar.pyx"],
              language="c++",
              extra_compile_args=["-std=c++11"],
              extra_link_args=["-std=c++11"])
]
setup(
    name="system2",
    ext_modules=cythonize(extensions, compiler_directives={'language_level' : "3"}),
)

foo/bar.py

cpdef say_hello():
    print('Hello!')

runner.py:

import pyximport
pyximport.install(reload_support=True)

import foo.bar
import subprocess
from importlib import reload

if __name__ == '__main__':

    def reload_bar():
        p = subprocess.Popen('python setup.py build_ext --inplace',
                             shell=True,
                             cwd='<your directory>')
        p.wait()

        reload(foo.bar)
        foo.bar.say_hello()

But this doesn't seem to work. If I edit bar.pyx and run reload_bar I don't see my changes. I also tried pyximport.build_module() with no luck -- the module rebuilt but didn't reload. I'm running in a "normal" python shell, not IPython if it makes a difference.

from reload module with pyximport?

reload module with pyximport? 2019-03-12T22:34:00-07:00 Rating: 4.5 Diposkan Oleh: Admin