Add separate rate limit exception

Fixes #267.

Author: Terrance

skpy/conn.py

@@ -12,7 +12,7 @@
 import requests
 from bs4 import BeautifulSoup
 
-from .core import SkypeApiException, SkypeAuthException, SkypeEnum, SkypeObj
+from .core import SkypeApiException, SkypeAuthException, SkypeEnum, SkypeObj, SkypeRateLimitException
 
 
 class SkypeConnection(SkypeObj):
@@ -245,7 +245,7 @@ def __call__(self, method, url, codes=(200, 201, 202, 204, 207), auth=None, head
                 print(resp.text)
         if resp.status_code not in codes:
             if resp.status_code == 429:
-                raise SkypeAuthException("Auth rate limit exceeded", resp)
+                raise SkypeRateLimitException("Rate limit exceeded", resp)
             raise SkypeApiException("{0} response from {1} {2}".format(resp.status_code, method, url), resp)
         return resp
 

skpy/core.py

@@ -231,6 +231,16 @@ class SkypeApiException(SkypeException):
     """
 
 
+class SkypeRateLimitException(SkypeApiException):
+    """
+    An exception thrown if a limit has been reached.
+
+    Arguments will be of the form (``message``, ``response``).
+
+    This may be a cooldown on authentication, message sending, or another action performed too frequently.
+    """
+
+
 class SkypeAuthException(SkypeException):
     """
     An exception thrown when authentication cannot be completed.