human
I wrote the below code

    def xpath_find(value):
        validate(ET.iselement, value)
        value = value.find(xpath)
        if (value is None):
            raise ValueError("XPath    '{0}'    did    not    return    an    element".format(xpath))
        return validate(ET.iselement, value)
    return transform(xpath_find)

What's a good function header?

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

def xml_find(xpath):