Merge remote-tracking branch 'immerrr/make-exceptions-picklable'

* immerrr/make-exceptions-picklable:
  Make exceptions picklable on Python 2.X

1 files changed, 4 insertions, 0 deletions

diff --git a/jsonschema/exceptions.py b/jsonschema/exceptions.py
index 46f1ce0..b93ec86 100644
--- a/jsonschema/exceptions.py
+++ b/jsonschema/exceptions.py
@@ -27,6 +27,10 @@ class _Error(Exception):
         schema_path=(),
         parent=None,
     ):
+        # Calling __init__ is important, because otherwise __reduce__ will
+        # return empty args tuple on Py2.7 and unpickling will fail because
+        # init requires at least one argument.
+        super(_Error, self).__init__(message)
         self.message = message
         self.path = self.relative_path = deque(path)
         self.schema_path = self.relative_schema_path = deque(schema_path)