refactor OBSSDKRequestError

reword error section in README

README.md

@@ -128,13 +128,13 @@ def on_scene_created(data):
 
 ### Errors
 
-A base error class `OBSSDKError` may be used to catch OBSSDK error types.
-
-If a request returns an error code an `OBSSDKRequestError` will be raised.
-
-For a full list of status codes refer to [Codes](https://github.com/obsproject/obs-websocket/blob/master/docs/generated/protocol.md#requeststatus)
-
-If a timeout occurs during sending/receiving a request or receiving an event an `OBSSDKTimeoutError` will be raised.
+- `OBSSDKError`: Base error class.
+- `OBSSDKTimeoutError`: Raised if a timeout occurs during sending/receiving a request or receiving an event
+- `OBSSDKRequestError`: Raised when a request returns an error code.
+  - The following attributes are available:
+    - `req_name`: name of the request.
+    - `code`: request status code.
+  - For a full list of status codes refer to [Codes](https://github.com/obsproject/obs-websocket/blob/master/docs/generated/protocol.md#requeststatus)
 
 ### Logging
 

obsws_python/error.py

@@ -9,13 +9,10 @@ class OBSSDKTimeoutError(OBSSDKError):
 class OBSSDKRequestError(OBSSDKError):
     """Exception raised when a request returns an error code"""
 
-    def __init__(self, req_name, code, message=None):
+    def __init__(self, req_name, code, comment):
         self.req_name = req_name
         self.code = code
-        self.message = " ".join(
-            [
-                f"Request {self.req_name} returned code {self.code}.",
-                f"With message: {message}" if message else "",
-            ]
-        )
-        super().__init__(self.message)
+        message = f"Request {self.req_name} returned code {self.code}."
+        if comment:
+            message += f" With message: {comment}"
+        super().__init__(message)