False positive in 2.7.0: kazoo unpacking-non-sequence

[PereBal]

Steps to reproduce

1. Create the following files:

pt1.py

"Something"
from kazoo.client import KazooClient

KAZOO_CLIENT = None

def init_kazoo_client() -> KazooClient:
    "initialize"
    global KAZOO_CLIENT  # pylint: disable=global-statement
    KAZOO_CLIENT = KazooClient()
    KAZOO_CLIENT.start()
    return KAZOO_CLIENT

def get_kazoo_client() -> KazooClient:
    "get client"
    global KAZOO_CLIENT  # pylint: disable=global-statement
    assert KAZOO_CLIENT is not None, "Uh oh"
    return KAZOO_CLIENT

pt.py

"Something"
import pt1

pt1.init_kazoo_client()

ZKCONN: pt1.KazooClient = pt1.get_kazoo_client()
DATA, STAT = ZKCONN.get("/bogus-path")

2. Run pylint pt1.py pt.py

Current behavior

Pylint errors out with

************* Module pt
pt.py:7:0: E0633: Attempting to unpack a non-sequence defined at line 28 of kazoo.handlers.utils (unpacking-non-sequence)

Expected behavior

Pylint does not error out as it was doing before v2.7.0 . kazoo.client.KazooClient.get should return a tuple or raise an exception as per their docs

pylint --version output

$ pylint --version
pylint 2.7.0
astroid 2.5
Python 3.7.9 (default, Nov 18 2020, 14:10:47) 
[GCC 8.3.0]