Update the code to better reflect recommended style:

Use != instead of <> since <> is documented as "obsolescent".
Use "is" and "is not" when comparing with None or type objects.

1 files changed, 1 insertions, 1 deletions

diff --git a/Lib/calendar.py b/Lib/calendar.py
index 41bb191478d..01c21947a9d 100644
--- a/Lib/calendar.py
+++ b/Lib/calendar.py
@@ -50,7 +50,7 @@ def setfirstweekday(weekday):
 
 def isleap(year):
     """Return 1 for leap years, 0 for non-leap years."""
-    return year % 4 == 0 and (year % 100 <> 0 or year % 400 == 0)
+    return year % 4 == 0 and (year % 100 != 0 or year % 400 == 0)
 
 def leapdays(y1, y2):
     """Return number of leap years in range [y1, y2).