human
I wrote the below code

    def _log(msg):
        if LOG_CONNECTION_RESOLUTION:
            log.debug(msg)
    _log(('=' * 80))
    _log(('Querying    connections    for    resolver:    %s,    pid:    %s,    name:    %s' % (resolver, process_pid, process_name)))
    if isinstance(process_pid, str):
        try:
            process_pid = int(process_pid)
        except ValueError:
            raise ValueError(('Process    pid    was    non-numeric:    %s' % process_pid))
    if ((process_pid is None) and process_name and (resolver == Resolver.NETSTAT_WINDOWS)):
        process_pid = stem.util.system.pid_by_name(process_name)
    if ((process_pid is None) and (resolver in (Resolver.NETSTAT_WINDOWS, Resolver.PROC, Resolver.BSD_PROCSTAT))):
        raise ValueError(('%s    resolution    requires    a    pid' % resolver))
    if (resolver == Resolver.PROC):
        return [Connection(*conn) for conn in stem.util.proc.connections(process_pid)]
    resolver_command = RESOLVER_COMMAND[resolver].format(pid=process_pid)
    try:
        results = stem.util.system.call(resolver_command)
    except OSError as exc:
        raise IOError(("Unable    to    query    '%s':    %s" % (resolver_command, exc)))
    resolver_regex_str = RESOLVER_FILTER[resolver].format(protocol='(?P<protocol>\\S+)', local_address='(?P<local_address>[0-9.]+)', local_port='(?P<local_port>[0-9]+)', remote_address='(?P<remote_address>[0-9.]+)', remote_port='(?P<remote_port>[0-9]+)', pid=(process_pid if process_pid else '[0-9]*'), name=(process_name if process_name else '\\S*'))
    _log(('Resolver    regex:    %s' % resolver_regex_str))
    _log(('Resolver    results:\n%s' % '\n'.join(results)))
    connections = []
    resolver_regex = re.compile(resolver_regex_str)
    for line in results:
        match = resolver_regex.match(line)
        if match:
            attr = match.groupdict()
            local_addr = attr['local_address']
            local_port = int(attr['local_port'])
            remote_addr = attr['remote_address']
            remote_port =...

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

def get_connections(resolver, process_pid=None, process_name=None):