improve code readability

- several statements belong to several lines
- use bools over ints
- not(foo in bar) -> foo not in bar
- (if not b: return 0; else: return 1) -> return b


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@29758 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Banking/tests/TestERP5BankingMixin.py

@@ -32,11 +32,12 @@ from zLOG import LOG
 
 def isSameSet(a, b):
   for i in a:
-    if not(i in b) : return 0
+    if i not in b:
+      return False
   for i in b:
-    if not(i in a): return 0
-  if len(a) != len(b) : return 0
-  return 1
+    if i not in a:
+      return False
+  return len(a) == len(b)
 
 class TestERP5BankingMixin:
   """