human
I wrote the below code

    patch_module('select')
    if aggressive:
        select = __import__('select')
        remove_item(select, 'epoll')
        remove_item(select, 'kqueue')
        remove_item(select, 'kevent')
        remove_item(select, 'devpoll')
    if (sys.version_info[:2] >= (3, 4)):
        select = __import__('select')
        orig_select_select = get_original('select', 'select')
        assert (select.select is not orig_select_select)
        selectors = __import__('selectors')
        if (selectors.SelectSelector._select in (select.select, orig_select_select)):
            def _select(self, *args, **kwargs):
                return select.select(*args, **kwargs)
            selectors.SelectSelector._select = _select
            _select._gevent_monkey = True
        if aggressive:
            remove_item(selectors, 'EpollSelector')
            remove_item(selectors, 'KqueueSelector')
            remove_item(selectors, 'DevpollSelector')
            selectors.DefaultSelector = selectors.SelectSelector

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

def patch_select(aggressive=True):