From 725605cd20b29e200f6aaa90f29053bc623b0e51 Mon Sep 17 00:00:00 2001
From: Joseph Frazier <1212jtraceur@gmail.com>
Date: Wed, 5 Oct 2016 11:25:37 -0400
Subject: [PATCH] Fix flake8 errors: E711 comparison to None should be 'if cond
 is not None:'

---
 thefuck/rules/unknown_command.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/thefuck/rules/unknown_command.py b/thefuck/rules/unknown_command.py
index ee7139e2..30a90bc8 100644
--- a/thefuck/rules/unknown_command.py
+++ b/thefuck/rules/unknown_command.py
@@ -3,8 +3,8 @@ from thefuck.utils import replace_command
 
 
 def match(command):
-    return (re.search(r"([^:]*): Unknown command.*", command.stderr) != None
-            and re.search(r"Did you mean ([^?]*)?", command.stderr) != None)
+    return (re.search(r"([^:]*): Unknown command.*", command.stderr) is not None
+            and re.search(r"Did you mean ([^?]*)?", command.stderr) is not None)
 
 
 def get_new_command(command):