Fix lint

qutebrowser/browser/downloads.py

@@ -778,7 +778,7 @@ class AbstractDownloadItem(QObject):
             elif isinstance(target, PDFJSDownloadTarget):
                 self.finished.connect(self._pdfjs_if_successful)
             else:
-                assert False, target
+                raise utils.Unreachable
 
             self._set_tempfile(fobj)
         else:  # pragma: no cover

qutebrowser/browser/pdfjs.py

@@ -27,7 +27,6 @@ from PyQt5.QtCore import QUrl, QUrlQuery
 from qutebrowser.utils import utils, javascript, jinja, qtutils, usertypes
 from qutebrowser.misc import objects
 from qutebrowser.config import config
-from qutebrowser.browser import downloads
 
 
 class PDFJSNotFound(Exception):

tests/unit/browser/test_qutescheme.py

@@ -22,7 +22,7 @@ import os
 import time
 import logging
 
-import py.path
+import py.path  # pylint: disable=no-name-in-module
 from PyQt5.QtCore import QUrl
 import pytest
 
@@ -189,7 +189,7 @@ class TestPDFJSHandler:
     @pytest.fixture
     def download_tmpdir(self):
         tdir = downloads.temp_download_manager.get_tmpdir()
-        yield py.path.local(tdir.name)
+        yield py.path.local(tdir.name)  # pylint: disable=no-member
         tdir.cleanup()
 
     def test_existing_resource(self):