human
I wrote the below code

    def f(rv):
        if (not (isinstance(rv, Pow) and (rv.base.func is sin))):
            return rv
        ia = (1 / rv)
        a = _TR56(ia, sin, cot, (lambda x: (1 + x)), max=max, pow=pow)
        if (a != ia):
            rv = a
        return rv
    return bottom_up(rv, f)

What's a good function header?

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

def TR15(rv, max=4, pow=False):