Test fixes and for loops need to be handled a awell in flow_analysis.

jedi/evaluate/flow_analysis.py

@@ -65,3 +65,5 @@ def _check_flow(evaluator, flow):
             return UNSURE
     elif flow.command in ('try', 'except', 'finally', 'while'):
         return UNSURE
+    else:  # for loop
+        return REACHABLE

test/completion/decorators.py

@@ -269,7 +269,7 @@ class MethodDecoratorDoesntExist(Base):
 # -----------------
 def memoize(function):
         def wrapper(*args):
-            if 1:
+            if random.choice([0, 1]):
                 pass
             else:
                 rv = function(*args)

test/completion/dynamic.py

@@ -318,8 +318,8 @@ blub()[0]
 
 # with else clause
 def blub():
-    if 1:
+    if random.choice([0, 1]):
-        1
+         1
     else:
         a = []
         a.append(1)