Fix lint

doc/help/commands.asciidoc

@@ -1909,6 +1909,7 @@ These commands are mainly intended for debugging. They are hidden if qutebrowser
 |<<debug-crash,debug-crash>>|Crash for debugging purposes.
 |<<debug-dump-history,debug-dump-history>>|Dump the history to a file in the old pre-SQL format.
 |<<debug-dump-page,debug-dump-page>>|Dump the current page's content to a file.
+|<<debug-keytester,debug-keytester>>|Show a keytester widget.
 |<<debug-log-capacity,debug-log-capacity>>|Change the number of log lines to be stored in RAM.
 |<<debug-log-filter,debug-log-filter>>|Change the log filter for console logging.
 |<<debug-log-level,debug-log-level>>|Change the log level for console logging.
@@ -1963,6 +1964,10 @@ Dump the current page's content to a file.
 ==== optional arguments
 * +*-p*+, +*--plain*+: Write plain text instead of HTML.
 
+[[debug-keytester]]
+=== debug-keytester
+Show a keytester widget.
+
 [[debug-log-capacity]]
 === debug-log-capacity
 Syntax: +:debug-log-capacity 'capacity'+

qutebrowser/misc/miscwidgets.py

@@ -23,8 +23,7 @@ import typing
 
 from PyQt5.QtCore import pyqtSlot, pyqtSignal, Qt, QSize, QTimer
 from PyQt5.QtWidgets import (QLineEdit, QWidget, QHBoxLayout, QLabel,
-                             QStyleOption, QStyle, QLayout, QApplication,
-                             QWidget)
+                             QStyleOption, QStyle, QLayout, QApplication)
 from PyQt5.QtGui import QValidator, QPainter
 
 from qutebrowser.config import config

scripts/keytester.py

@@ -23,7 +23,7 @@
 Use python3 -m scripts.keytester to launch it.
 """
 
-from PyQt5.QtWidgets import QApplication, QWidget, QLabel, QHBoxLayout
+from PyQt5.QtWidgets import QApplication
 
 from qutebrowser.misc import miscwidgets