This is with Tumbleweed (20180515) and the following uwsgi packages installed:

S  | Name         | Type    | Version    | Arch   | Repository           
---+--------------+---------+------------+--------+----------------------
i+ | uwsgi        | package | 2.0.17-2.1 | x86_64 | Main Repository (OSS)
i+ | uwsgi-python | package | 2.0.17-2.1 | x86_64 | Main Repository (OSS)


When listing the uwsgi plugins, the python plugin is not listed:

$ uwsgi --plugins-list

*** uWSGI loaded generic plugins ***

*** uWSGI loaded request plugins ***
--- end of plugins list ---

I can pass the plugin explicitly on command line, then it works:

$ uwsgi --plugin /usr/lib64/uwsgi/python_plugin.so --plugins-list

*** uWSGI loaded generic plugins ***

*** uWSGI loaded request plugins ***
0: python
--- end of plugins list ---