def __call__(self, theta0, t_array):
<EOL>t0 = <NUM_LIT:0><EOL>y0 = [theta0, <NUM_LIT:0.0>]              <EOL>y = self.odeint.solution(t0, y0)<EOL>return [y(t)[<NUM_LIT:0>] for t in t_array]<EOL>
Calculate pendulum angle theta for every t in t_array.

        Assumes that the pendulum is released at time t=0
        from angle theta0 with no initial velocity. Returns
        an array containing theta(t) for every t in t_array.