logging: Add exc() and exception() methods.

Non-standard exc() method accepts exception instance to log as a parameter. exception() just uses sys.exc_info().

Author: pfalcon

logging/logging.py

@@ -59,6 +59,13 @@ def error(self, msg, *args):
  def critical(self, msg, *args):
  self.log(CRITICAL, msg, *args)
 
+ def exc(self, e, msg, *args):
+ self.log(ERROR, msg, *args)
+ sys.print_exception(e, _stream)
+
+ def exception(self, msg, *args):
+ self.exc(sys.exc_info()[1], msg, *args)
+
 
 _level = INFO
 _loggers = {}