1 files changed, 21 insertions, 0 deletions
diff --git a/test/LedgerHarness.py b/test/LedgerHarness.py
index ea8290d4..44e4e61c 100755
--- a/test/LedgerHarness.py
+++ b/test/LedgerHarness.py
@@ -6,6 +6,27 @@ import re
 
 from subprocess import Popen, PIPE
 
+import copy_reg
+import types
+
+def _pickle_method(method):
+    func_name = method.im_func.__name__
+    obj = method.im_self
+    cls = method.im_class
+    return _unpickle_method, (func_name, obj, cls)
+
+def _unpickle_method(func_name, obj, cls):
+    for cls in cls.mro():
+        try:
+            func = cls.__dict__[func_name]
+        except KeyError:
+            pass
+        else:
+            break
+    return func.__get__(obj, cls)
+
+copy_reg.pickle(types.MethodType, _pickle_method, _unpickle_method)
+
 class LedgerHarness:
     ledger     = None
     sourcepath = None