human
I wrote the below code

    def wrap(f):
        @functools.wraps(f)
        def inner(*args, **kwargs):
            sem = _semaphores.get(name, semaphore.Semaphore())
            if (name not in _semaphores):
                _semaphores[name] = sem
            with sem:
                LOG.debug(_('Got    semaphore    "%(lock)s"    for    method    "%(method)s"...'), {'lock': name, 'method': f.__name__})
                if (not hasattr(local.strong_store, 'locks_held')):
                    local.strong_store.locks_held = []
                local.strong_store.locks_held.append(name)
                try:
                    if (external and (not CONF.disable_process_locking)):
                        LOG.debug(_('Attempting    to    grab    file    lock    "%(lock)s"    for    method    "%(method)s"...'), {'lock': name, 'method': f.__name__})
                        cleanup_dir = False
                        local_lock_path = lock_path
                        if (not local_lock_path):
                            local_lock_path = CONF.lock_path
                        if (not local_lock_path):
                            cleanup_dir = True
                            local_lock_path = tempfile.mkdtemp()
                        if (not os.path.exists(local_lock_path)):
                            fileutils.ensure_tree(local_lock_path)
                        safe_name = name.replace(os.sep, '_')
                        lock_file_name = ('%s%s' % (lock_file_prefix, safe_name))
                        lock_file_path = os.path.join(local_lock_path, lock_file_name)
                        try:
                            lock = InterProcessLock(lock_file_path)
                            with lock:
                                LOG.debug(_('Got    file    lock    "%(lock)s"    at    %(path)s    for    method    "%(method)s"...'), {'lock': name, 'path': lock_file_path, 'method': f.__name__})
                                retval = f(*args, **kwargs)
                        finally:
                            LOG.debug(_('Released   ...

What's a good function header?

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

def synchronized(name, lock_file_prefix, external=False, lock_path=None):