cgitb.handler(info=None) 
This function handles an exception using the default settings (that is, show a report in the browser, but don’t log to a file). This can be used when you’ve caught an exception and want to report it using cgitb. The optional info argument should be a 3-tuple containing an exception type, exception value, and traceback object, exactly like the tuple returned by sys.exc_info(). If the info argument is not supplied, the current exception is obtained from sys.exc_info().
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