def get(self, item, default=None):
try:<EOL><INDENT>return self[item]<EOL><DEDENT>except KeyError:<EOL><INDENT>return default<EOL><DEDENT>
Return the value of a specific parameter. If the parameter does not
have a value return the default value.

:param item: The name of the parameter 
:param default: Default value
:return: The value of the parameter or, if that doesn't exist, 
    the default value