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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 deep_copy(self):
        '''Return a deep copy of the state'''
        c = KalmanState(self.observation_matrix, self.translation_matrix)
        c.state_vec = self.state_vec.copy()
        c.state_cov = self.state_cov.copy()
        c.noise_var = self.noise_var.copy()
        c.state_noise = self.state_noise.copy()
        c.state_noise_idx = self.state_noise_idx.copy()
        return c