What's the correct way to sort Python `import x` and `from x import y` statements?

Question

The python style guide suggests to group imports like this:

Imports should be grouped in the following order:

1. standard library imp

Answer 1

According to the CIA's internal coding conventions (part of the WikiLeaks Vault 7 leak), python imports should be grouped into three groups:

1. Standard library imports
2. Third-party imports
3. Application-specific imports

Imports should be ordered lexicographically within these groups, ignoring case:

import foo
from foo import bar
from foo.bar import baz
from foo.bar import Quux
from Foob import ar