ENH: simplify our formatExceptionInfo

Actually it was not that consistent before and e.g. could add  () if
exception had no parameters and empty tuple.  Simple str'ing seems to
provide the most consistent output and now would bring up our coverage %

common/helpers.py

@@ -17,24 +17,12 @@
 # along with Fail2Ban; if not, write to the Free Software
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
-__author__ = "Cyril Jaquier, Arturo 'Buanzo' Busleiman"
-__copyright__ = "Copyright (c) 2009 Cyril Jaquier"
+__author__ = "Cyril Jaquier, Arturo 'Buanzo' Busleiman, Yaroslav Halchenko"
 __license__ = "GPL"
 
 
 def formatExceptionInfo():
-	""" Author: Arturo 'Buanzo' Busleiman """
+	""" Consistently format exception information """
 	import sys
 	cla, exc = sys.exc_info()[:2]
-	excName = cla.__name__
-	try:
-		excArgs = exc.__dict__["args"]
-		# Assure that we always return a string, without unneeded
-		# 'decorations' with python <= 2.5 where args would be a tuple
-		if isinstance(excArgs, tuple) and len(excArgs) == 1:
-			excArgs = excArgs[0]
-		excArgs = str(excArgs)
-	except KeyError:
-		# And always provide a string output
-		excArgs = str(exc)
-	return (excName, excArgs)
+	return (cla.__name__, str(exc))