Using Flake8 in VSCode...?

Have you tried to:

1. ctrl + shift + p
2. write "select linter" then click on it
3. click on flake8

Maybe that helps.

Usually yeah it will. But if it doesn't work for you, then you can try specifying absolute path to flake8 and enable it explicitly like so :

"python.linting.flake8Enabled": true,  
"python.linting.flake8Path": "path/to/flake8",  

you can even specify path to your conda environment :

"python.condaPath": "path/to/condaenv/",