In the README under "Coding style" it asks,

For our Python code base, regarding coding style we largely follow PEP 8 with a maximum line length of 100 characters for code (please wrap doc strings and comments at a "traditional" 72 characters regardless).

We make an exception regarding import order if a specific version or range of a module is required (e.g. for placing calls to gi.require_version() or pkg_resources.require() before the respective import statements). Please add a noqa comment so that flake8 doesn't flag them:

import gi
gi.require_version('Modulemd', '1.0')  # noqa: E402
from gi.repository import Modulemd

Does that actually work? In my experience it doesn't seem to — it's the import lines that need to be excepted since they're the ones that are flagged. So, instead:

import gi
gi.require_version('Modulemd', '1.0')
from gi.repository import Modulemd  # noqa: E402

Additionally, every import statement following the first non-import call has to be protected the same way. Which sucks if you have a lot of imports that use or subclass GI modules, since you really want to set up the GI versioning first. So you end up with this kind of mess:

import gi
gi.require_version("Gtk", "3.0")
gi.require_version("Gdk", "3.0")
from gi.repository import Gtk  # noqa: E402
from gi.repository import Gdk  # noqa: E402
from my.module import AGtkSubclass  # noqa: E402
from my.other.module import (  # noqa: E402
    GdkSubclass1, GdkSubclass2)

(The comment only working if it's on the first line of that last import is probably the most ugly thing about this.)