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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def set_silent(self):
 """Silence most messages."""

        self.set_icntl(1, -1) # output stream for error msgs
        self.set_icntl(2, -1) # otuput stream for diagnostic msgs
        self.set_icntl(3, -1) # output stream for global info
        self.set_icntl(4, 0)