Support flake8 instead of pyflakes as linter in the editor

[andprosoft]

In the following example, Spyder 5.1.1. shows correctly a E302 error:

Now, when silencing another error using the noqa command, then this error is not shown anymore, even if it was not silenced:

However, the E302 error still exists, which is confirmed when the file is analyzed with flake8:

I think, Spyder should also show the E302 error.

[ccordoba12]

Hey @andprosoft, thanks for reporting. Fine grained #noqa exclusions are only supported by Flake8, not by Pyflakes (which is the linter we use right now).

So we'd need to switch to it, but that's not an easy task (perhaps we could do it for Spyder 6).

[andprosoft]

Hi @ccordoba12, thanks for the reply, now I see the reason for this. I think, it would be great, if this could be fixed in the future.