Hi Juergen,
I guess you are using connected mode. In this mode SonarLint will download (some) analyzers (aka plugins)) from your SonarQube server and use them for the analysis. You have probably installed SonarQube Python Plugin 1.3 on your SonarQube server.
If you don't have python, code, just remove it. If you want to analyze Python files, please update the plugin on your SonarQube server to use the
latest version. Then go back to SonarLint and update data from the server.
++
Julien