please linter

examples/utils/cwd_prompt.py

@@ -1,25 +1,22 b''
 """This is an example that shows how to create new prompts for IPython
 """
 
 from IPython.terminal.prompts import Prompts, Token
 import os
 
 class MyPrompt(Prompts):
 
     def in_prompt_tokens(self):
-        return [
-                (Token, os.getcwd()),
-                (Token.Prompt, ">>>")
-               ]
+        return [(Token, os.getcwd()), (Token.Prompt, ">>>")]
 
 
 def load_ipython_extension(shell):
     new_prompts = MyPrompt(shell)
     new_prompts.old_prompts = shell.prompts
     shell.prompts = new_prompts
 
 def unload_ipython_extension(shell):
     if not hasattr(shell.prompts, 'old_prompts'):
         print("cannot unload")
     else:
         shell.prompts = shell.prompts.old_prompts