General code cleanup -- whitespace, local variable alias removal, &c.

src/ZODB/ConflictResolution.py

@@ -19,14 +19,15 @@ from ZODB.POSException import ConflictError
 
 #import traceback
 
-bad_classes={}
+bad_classes = {}
+
 def bad_class(class_tuple):
     if bad_classes.has_key(class_tuple) or class_tuple[0][0] == '*':
         # if we've seen the class before or if it's a ZClass, we know that
         # we can't resolve the conflict
         return 1
 
-ResolvedSerial='rs'
+ResolvedSerial = 'rs'
 
 def _classFactory(location, name,
                   _silly=('__doc__',), _globals={}):
@@ -34,12 +35,12 @@ def _classFactory(location, name,
                    name)
 
 def state(self, oid, serial, prfactory, p=''):
-    p=p or self.loadSerial(oid, serial)
-    file=StringIO(p)
-    unpickler=Unpickler(file)
-    unpickler.persistent_load=prfactory
-    class_tuple=unpickler.load()
-    state=unpickler.load()
+    p = p or self.loadSerial(oid, serial)
+    file = StringIO(p)
+    unpickler = Unpickler(file)
+    unpickler.persistent_load = prfactory.persistent_load
+    class_tuple = unpickler.load()
+    state = unpickler.load()
     return state
 
 
@@ -53,26 +54,21 @@ class PersistentReference:
 
 class PersistentReferenceFactory:
 
-    data=None
-    
-    def __call__(self, oid,
-                 getattr=getattr, None=None):
+    data = None
 
-        data=self.data
-        if not data: data=self.data={}
+    def persistent_load(self, oid):
+        if self.data is None:
+            self.data = {}
 
-        r=data.get(oid, None)
+        r = self.data.get(oid, None)
         if r is None:
-            r=PersistentReference()
-            r.data=oid
-            data[oid]=r
+            r = PersistentReference()
+            r.data = oid
+            self.data[oid] = r
 
         return r
 
-def persistent_id(object,
-                  PersistentReference=PersistentReference,
-                  getattr=getattr
-                  ):
+def persistent_id(object):
     if getattr(object, '__class__', 0) is not PersistentReference:
         return None
     return object.data
@@ -81,38 +77,34 @@ def tryToResolveConflict(self, oid, committedSerial, oldSerial, newpickle,
                          committedData=''):
     #class_tuple, old, committed, newstate = ('',''), 0, 0, 0
     try:
-        file=StringIO(newpickle)
-        unpickler=Unpickler(file)
-        prfactory=PersistentReferenceFactory()
-        unpickler.persistent_load=prfactory
-        class_tuple=unpickler.load()[0]
+        file = StringIO(newpickle)
+        unpickler = Unpickler(file)
+        prfactory = PersistentReferenceFactory()
+        unpickler.persistent_load = prfactory.persistent_load
+        class_tuple = unpickler.load()[0]
         if bad_class(class_tuple):
-            #sys.stderr.write(' b%s ' % class_tuple[1]); sys.stderr.flush()
             return 0
 
-        newstate=unpickler.load()
-        klass=_classFactory(class_tuple[0], class_tuple[1])
-        inst=klass.__basicnew__()
+        newstate = unpickler.load()
+        klass = _classFactory(class_tuple[0], class_tuple[1])
+        inst = klass.__basicnew__()
 
         try:
-            resolve=inst._p_resolveConflict
+            resolve = inst._p_resolveConflict
         except AttributeError:
-            bad_classes[class_tuple]=1
-            #traceback.print_exc()
-            #sys.stderr.write(' b%s ' % class_tuple[1]); sys.stderr.flush()
+            bad_classes[class_tuple] = 1
             return 0
 
-        old=state(self, oid, oldSerial, prfactory)
-        committed=state(self, oid, committedSerial, prfactory, committedData)
+        old = state(self, oid, oldSerial, prfactory)
+        committed = state(self, oid, committedSerial, prfactory, committedData)
 
-        resolved=resolve(old, committed, newstate)
+        resolved = resolve(old, committed, newstate)
 
-        file=StringIO()
-        pickler=Pickler(file,1)
-        pickler.persistent_id=persistent_id
+        file = StringIO()
+        pickler = Pickler(file,1)
+        pickler.persistent_id = persistent_id
         pickler.dump(class_tuple)
         pickler.dump(resolved)
-        #sys.stderr.write(' r%s ' % class_tuple[1]); sys.stderr.flush()
         return file.getvalue(1)
     except ConflictError:
         return 0
@@ -120,4 +112,4 @@ def tryToResolveConflict(self, oid, committedSerial, oldSerial, newpickle,
 class ConflictResolvingStorage:
     "Mix-in class that provides conflict resolution handling for storages"
 
-    tryToResolveConflict=tryToResolveConflict
+    tryToResolveConflict = tryToResolveConflict