Updated sleekxmpp.exceptions with PEP8 style and docs.

sleekxmpp/exceptions.py

@@ -3,11 +3,40 @@
     Copyright (C) 2010  Nathanael C. Fritz
     This file is part of SleekXMPP.
 
-See the file LICENSE for copying permission.
+    See the file LICENSE for copying permission.
 """
 
 class XMPPError(Exception):
-	def __init__(self, condition='undefined-condition', text=None, etype=None, extension=None, extension_ns=None, extension_args=None):
+
+    """
+    A generic exception that may be raised while processing an XMPP stanza
+    to indicate that an error response stanza should be sent.
+
+    The exception method for stanza objects extending RootStanza will create
+    an error stanza and initialize any additional substanzas using the
+    extension information included in the exception.
+
+    Meant for use in SleekXMPP plugins and applications using SleekXMPP.
+    """
+
+    def __init__(self, condition='undefined-condition', text=None, etype=None,
+                 extension=None, extension_ns=None, extension_args=None):
+        """
+        Create a new XMPPError exception.
+
+        Extension information can be included to add additional XML elements
+        to the generated error stanza.
+
+        Arguments:
+            condition      -- The XMPP defined error condition.
+            text           -- Human readable text describing the error.
+            etype          -- The XMPP error type, such as cancel or modify.
+            extension      -- Tag name of the extension's XML content.
+            extension_ns   -- XML namespace of the extensions' XML content.
+            extension_args -- Content and attributes for the extension
+                              element. Same as the additional arguments to
+                              the ET.Element constructor.
+        """
         self.condition = condition
         self.text = text
         self.etype = etype