plot_interval.py 文件源码

def vrange2(self):
        """
        Yields v_steps pairs of sympy numbers ranging from
        (v_min, v_min + step) to (v_max - step, v_max).
        """
        d = (self.v_max - self.v_min) / self.v_steps
        a = self.v_min + (d * Integer(0))
        for i in xrange(self.v_steps):
            b = self.v_min + (d * Integer(i + 1))
            yield a, b
            a = b