human
I wrote the below code

    def _check_args(rho, x):
        cond1 = (x > 0)
        cond2 = ((rho > 0) and (rho < 1))
        return (cond1 and cond2)
    if (not np.all(_check_args(rho, x))):
        raise ValueError('invalid    args')
    from scipy.stats import t as stats_t
    z = (np.sqrt((1.0 + x)) * (np.power((t / (1.0 - t)), (1.0 / x)) - rho))
    z /= np.sqrt((1 - (rho * rho)))
    transf = (((1 - t) * stats_t._cdf(z, (x + 1))) + (t * stats_t._cdf(z, (x + 1))))
    return transf

What's a good function header?

Here's a good function header?
assistant
#Here's a good function header.

def transform_tev(t, rho, x):