Python package with pywin32 or pypiwin32 dependency

Question

I'm building a python package which requires pywin32.

Adding pywin32 as a dependency doesn't work seamlessly, since it has a postinstall script which the user must run themselves.

Adding pypiwin32 as a dependency doesn't work because my package won't play nice with other packages which do require pywin32

I tried requiring both, but it turns out pywin32 and pypiwin32 can't coexist on the same python installation

Is there a way of specifying either pywin32 or pypiwin32 as a dependency? Or some other solution?

check this and never forget "The application will not react like DLL", need be shared and registered otherwise will not work or work a partition ! — dsgdfg
– dsgdfg, Commented Oct 3, 2017 at 10:46
Thank you, I read it but didn't really understand how passing com objects across threads relates to this scenario — Alon Jacobi
– Alon Jacobi, Commented Oct 3, 2017 at 10:51
Adding pywin32 as a dependency resource access will not work ! You can't add your dependencies as system required/registered module. Got 2 way : 1-use a dll as module,2- Use minimal-common libraries(not full library) — dsgdfg
– dsgdfg, Commented Oct 3, 2017 at 11:01
You can used method on the link If you are the manager of all computers. I fixed this problem with "Compiled execute for every machine", different machines different errors ! Waste a lot time. Maybe not good idea but "install python+pythonwin to every machine" your application(.exe) will be work without any error. — dsgdfg
– dsgdfg, Commented Oct 3, 2017 at 11:11
pywin32 comes as an executable, while pypiwin32 (is the newer form that) comes as a .whl (which can be a dependency for other packages). How can a package have a pywin32 as a dependency (since it doesn't exist)? Something doesn't seem to be right here. — CristiFati
– CristiFati, Commented Oct 4, 2017 at 8:41

Brandon Keith Biggs · Accepted Answer · 2019-01-05 19:10:20Z

The adding pip install pywin32 as a post-install script works, but removes the install_requires command from setup. To fix this, add do_egg_install(self) rather than run in the classes

from setuptools import setup
from setuptools.command.develop import develop as _develop
from setuptools.command.install import install as _install
from subprocess import check_call

# PostDevelopCommand
class develop(_develop):
    """Post-installation for development mode."""
    def run(self):
        check_call("pip install pywin32")
        develop.do_egg_install(self)

# PostInstallCommand
class install(_install):
    """Post-installation for installation mode."""
    def run(self):
        check_call("pip install pywin32")
        develop.do_egg_install(self)

and insert cmdclass argument to setup() function in setup.py:

 setup(
     ...

    cmdclass={
        'develop': develop,
        'install': install,
    },

    ...
)

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