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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 get_times(self):
 """Return all the action times and times-1e-6 in a list"""

        if not self.n:
            return []
        self.times = list(mul(self.u1, self.t1)) + \
            list(mul(self.u2, self.t2)) + \
            list(mul(self.u3, self.t3)) + \
            list(mul(self.u4, self.t4))

        self.times = matrix(list(set(self.times)))
        self.times = list(self.times) + list(self.times - 1e-6)
        return self.times