Local and third party packages are being sorted together

[Siecje]

I am using develop but local imports and third party imports are being sorted together.

~/.isort.cfg

[settings]
known_third_party=gcutilities
force_sort_within_sections=1
no_lines_before=LOCALFOLDER
order_by_type=False

cody@ ~/D/why> tree
.
├── baz.py
└── Platform
    ├── foo.py
    └── __init__.py
cody@ ~/D/why> cat Platform/foo.py 
bar = 1

cody@ ~/D/why> cat baz.py 
from rest_framework import serializers

from Platform.foo import bar

cody@ ~/D/why> isort baz.py 
Fixing /home/cody/Desktop/why/baz.py
cody@ ~/D/why> cat baz.py 
from Platform.foo import bar
from rest_framework import serializers

[toumorokoshi]

I've noticed this as well. I don't see any clear documentation on isort's sort inference strategy, but isort is effectively looking to see if a package is installed to determine if it's first or third party.

For example, if I don't install flask into my virtualenv, it's considered a first party and sorted with the rest.

If I do install flask, it's considered a third party.

It might be better in general for isort to have an uncategorized section. But at least documenting this behavior somewhere easily accessible would have saved me a lot of time.

[toumorokoshi]

Also it looks like #1071 is a good solution for this.

[timothycrosley]

This should be fixed for the 5.0.0 release in spirit via this ticket: #1147