Issue #7689: Allow pickling of dynamically created classes when their
metaclass is registered with copyreg. Patch by Nicolas M. Thiéry and
Craig Citro.
diff --git a/Lib/pickle.py b/Lib/pickle.py
index 005b1b9..5b95cba 100644
--- a/Lib/pickle.py
+++ b/Lib/pickle.py
@@ -286,20 +286,20 @@
f(self, obj) # Call unbound method with explicit self
return
- # Check for a class with a custom metaclass; treat as regular class
- try:
- issc = issubclass(t, TypeType)
- except TypeError: # t is not a class (old Boost; see SF #502085)
- issc = 0
- if issc:
- self.save_global(obj)
- return
-
# Check copy_reg.dispatch_table
reduce = dispatch_table.get(t)
if reduce:
rv = reduce(obj)
else:
+ # Check for a class with a custom metaclass; treat as regular class
+ try:
+ issc = issubclass(t, TypeType)
+ except TypeError: # t is not a class (old Boost; see SF #502085)
+ issc = 0
+ if issc:
+ self.save_global(obj)
+ return
+
# Check for a __reduce_ex__ method, fall back to __reduce__
reduce = getattr(obj, "__reduce_ex__", None)
if reduce: