Merge pull request #1 from zlinna/zlinna-patch-1

 update  func: isLeapYear

Author: nonocoke

ch01_basic/at001_math.py

@@ -10,7 +10,7 @@
 
 # 闰年判断
 def isLeapYear(year):
-    return (not year % 4 and year % 100) or (not year % 400)
+    return (not(year % 4 and year % 100)) or (not year % 400)
 
 
 # 找零钱
@@ -97,4 +97,4 @@ def main():
 
 
 if __name__ == '__main__':
-    main()
+    main()