(self, arg)
unalias name
        Delete the specified alias.
unalias name
        Delete the specified alias.
unalias name Delete the specified alias .
def do_unalias(self, arg):
        """unalias name
        Delete the specified alias.
        """
        args = arg.split()
        if len(args) == 0: return
        if args[0] in self.aliases:
            del self.aliases[args[0]]
def do_unalias ( self , arg ) : args = arg . split ( ) if len ( args ) == 0 : return if args [ 0 ] in self . aliases : del self . aliases [ args [ 0 ] ]