Misc linter cleanups (#14275)

IPython/core/interactiveshell.py

@@ -3604,7 +3604,7 b' class InteractiveShell(SingletonConfigurable):'
     # Things related to GUI support and pylab
     #-------------------------------------------------------------------------
 
-    active_eventloop = None
+    active_eventloop: Optional[str] = None
 
     def enable_gui(self, gui=None):
         raise NotImplementedError('Implement enable_gui in a subclass')

IPython/terminal/interactiveshell.py

@@ -1,6 +1,5 b''
 """IPython terminal interface using prompt_toolkit"""
 
-import asyncio
 import os
 import sys
 from warnings import warn
@@ -96,7 +95,8 b' def get_default_editor():'
     if os.name == 'posix':
         return 'vi'  # the only one guaranteed to be there!
     else:
-        return 'notepad' # same in Windows!
+        return "notepad"  # same in Windows!
+
 
 # conservatively check for tty
 # overridden streams can result in things like:
@@ -293,7 +293,6 b' class TerminalInteractiveShell(InteractiveShell):'
 
         return self.editing_mode
 
-
     @observe('editing_mode')
     def _editing_mode(self, change):
         if self.pt_app:
@@ -322,7 +321,6 b' class TerminalInteractiveShell(InteractiveShell):'
     def refresh_style(self):
         self._style = self._make_style_from_name_or_cls(self.highlighting_style)
 
-
     highlighting_style_overrides = Dict(
         help="Override highlighting format for specific tokens"
     ).tag(config=True)
@@ -859,7 +857,6 b' class TerminalInteractiveShell(InteractiveShell):'
             for cmd in ('clear', 'more', 'less', 'man'):
                 self.alias_manager.soft_define_alias(cmd, cmd)
 
-
     def __init__(self, *args, **kwargs) -> None:
         super(TerminalInteractiveShell, self).__init__(*args, **kwargs)
         self._set_autosuggestions(self.autosuggestions_provider)
@@ -868,7 +865,6 b' class TerminalInteractiveShell(InteractiveShell):'
         self.keep_running = True
         self._set_formatter(self.autoformatter)
 
-
     def ask_exit(self):
         self.keep_running = False
 
@@ -916,7 +912,6 b' class TerminalInteractiveShell(InteractiveShell):'
 
         self._atexit_once()
 
-
     _inputhook = None
     def inputhook(self, context):
         if self._inputhook is not None: