fixed #471v0.53.0

4 files changed, 11 insertions, 3 deletions

diff --git a/ChangeLog b/ChangeLog
index c9ee01f..ad7f9e9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,10 @@
 ChangeLog
 ============
 
+- 0.53.0
+
+  - on_open() missing 1 required positional argument: 'ws' (#471)
+  
 - 0.52.0
 
   - fixed callback argument in _app.py (#468)
diff --git a/setup.py b/setup.py
index 7da5592..06dfdd6 100644
--- a/setup.py
+++ b/setup.py
@@ -3,7 +3,7 @@ import sys
 from setuptools import setup
 import pkg_resources
 
-VERSION = "0.52.0"
+VERSION = "0.53.0"
 NAME = "websocket_client"
 
 install_requires = ["six"]
diff --git a/websocket/__init__.py b/websocket/__init__.py
index c917999..fe0c6f7 100644
--- a/websocket/__init__.py
+++ b/websocket/__init__.py
@@ -26,4 +26,4 @@ from ._exceptions import *
 from ._logging import *
 from ._socket import *
 
-__version__ = "0.52.0"
+__version__ = "0.53.0"
diff --git a/websocket/_app.py b/websocket/_app.py
index 982fa54..a281402 100644
--- a/websocket/_app.py
+++ b/websocket/_app.py
@@ -329,7 +329,11 @@ class WebSocketApp(object):
     def _callback(self, callback, *args):
         if callback:
             try:
-                callback(self, *args)
+                if inspect.ismethod(callback):
+                    callback(*args)
+                else:
+                    callback(self, *args)
+
             except Exception as e:
                 _logging.error("error from callback {}: {}".format(callback, e))
                 if _logging.isEnabledForDebug():