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

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The python style guide suggests to group imports like this:

Imports should be grouped in the following order:

  1. standard library imports
  2. related third party imports
  3. local application/library specific imports

However, it does not mention anything how the two different ways of imports should be laid out:

from foo import bar
import foo

There are multiple ways to sort them (let’s assume all those import belong to the same group):

  • first from..import, then import

    from g import gg
from x import xx
import abc
import def
import x

  • first import, then from..import

    import abc
import def
import x
from g import gg
from x import xx

  • alphabetic order by module name, ignoring the kind of import

    import abc
import def
from g import gg
import x
from xx import xx

PEP8 does not mention the preferred order for this and the “cleanup imports” features some IDEs have probably just do whatever the developer of that feature preferred.

I’m looking for another PEP clarifying this or a relevant comment/email from the BDFL (or another Python core developer). Please don’t post subjective answers stating your own preference.

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