python is not installing dependencies listed in install_requires of setuptools

Question

I have written a python module that depends on openpyxl. I want openpxyl to be installed as a dependency automatically using setuptools. I read that the proper way to do this is

Answer 1

I notice when you use override 'install' with a 'cmdclass' key. The pattern below also left me with uninstalled dependencies.

Custom_Install(install):
    def run(self):
        # some custom commands
        install.run(self) 

Adding the dependencies into setup_requires didn't work for me so in the end I just did my own pip install in the custom install command..

def pip_install(package_name):
    subprocess.call(
        [sys.executable, '-m', 'pip', 'install', package_name]
    )