gradient.py 文件源码

def __str__(self):
        # args may have been inserted by e.g. makeTester
        args_msg = ", ".join(str(a) for a in self.args)
        return """\
GradientError: numeric gradient and analytic gradient exceed tolerance:
        At position %i of argument %i,
            abs. error = %f,  abs. tolerance = %f
            rel. error = %f,  rel. tolerance = %f
Exception args: %s""" % (self.err_pos, self.arg,
                         self.abs_err, self.abs_tol,
                         self.rel_err, self.rel_tol,
                         args_msg)