Container create/run/attach hangs if container exits immediately

Docker-py version: 3.4.1
Python version: 3.6.6, 3.6.0

Please see "this line is never reached at all". This container is correctly identified as "exited" by the command-line tools. If I subsequently delete the container the test case will still hang forever.

>> docker version
Server:
 Engine:
  Version:	17.12.1-ce
  API version:	1.35 (minimum version 1.12)
  Go version:	go1.10.1
  Git commit:	7390fc6
  Built:	Wed Feb 28 17:46:05 2018
  OS/Arch:	linux/amd64
  Experimental:	false

Failing test case:

import json
import subprocess
import unittest
from contextlib import closing
from time import sleep

from docker import DockerClient
from docker.types import ContainerConfig


def run_shell(*cmd):
    popen = subprocess.Popen(cmd, stdout=subprocess.PIPE, universal_newlines=True)

    try:
        return json.loads(popen.stdout.read())[0]
    finally:
        popen.stdout.close()


class TestDockerError(unittest.TestCase):
    def test_create_attach_clean(self):
        try:
            with closing(DockerClient('unix:///var/run/docker.sock')) as cli:
                c = cli.containers.create(
                    image='alpine:3.5',
                    command=['sh', '-c', 'echo asd'],
                    name='test_simple'
                )
                c.start()

                print(c.status)  # created
                print(run_shell('docker', 'inspect', 'test_simple')['State']['Status'])  # running
                sleep(5)

                print(c.status)  # created
                print(run_shell('docker', 'inspect', 'test_simple')['State']['Status'])  # exited

                for log in c.attach(stream=True, logs=True):
                    print(log)  # b'asd\n'

                # todo this line is never reached at all

        finally:
            try:
                with closing(DockerClient('unix:///var/run/docker.sock')) as cli:
                    cli.api.remove_container('test_simple')
            except:
                pass

    def test_create_attach_bare(self):
        try:
            with closing(DockerClient('unix:///var/run/docker.sock')) as cli:
                c = cli.api.create_container_from_config(
                    config=ContainerConfig(
                        detach=True,
                        version=cli.api.api_version,
                        labels={'test': '1'},
                        image='alpine:3.5',
                        command=['sh', '-c', 'echo asd']
                    ), name='test_simple'
                )

                cli.api.start(c['Id'])

                print(cli.api.inspect_container(c['Id'])['State']['Status'])  # running
                print(run_shell('docker', 'inspect', 'test_simple')['State']['Status'])  # running
                sleep(5)
                print(run_shell('docker', 'inspect', 'test_simple')['State']['Status'])  # exited

                for log in cli.api.attach(c['Id'], stream=True, logs=True):
                    print(log)  # b'asd\n'

                # todo this line is never reached at all
        finally:
            try:
                with closing(DockerClient('unix:///var/run/docker.sock')) as cli:
                    cli.api.remove_container('test_simple')
            except:
                pass

Reproduce the inline tests with Docker-py 3.4.1, focusing on c.attach(stream=True, logs=True) and cli.api.attach after the container exits. Trace the attach entry points and verify that iteration terminates after the final log, then rerun both test cases to confirm cleanup still works.