human
I wrote the below code

    error_exit_ok = kwargs.pop('error_exit_ok', False)
    env = kwargs.get('env')
    if (not env):
        env = kwargs['env'] = TestEnvironment()
    stdout = env.stdout
    stderr = env.stderr
    args = list(args)
    args_with_config_defaults = (args + env.config.default_options)
    add_to_args = []
    if ('--debug' not in args_with_config_defaults):
        if ((not error_exit_ok) and ('--traceback' not in args_with_config_defaults)):
            add_to_args.append('--traceback')
        if (not any((('--timeout' in arg) for arg in args_with_config_defaults))):
            add_to_args.append('--timeout=3')
    args = (add_to_args + args)
    def dump_stderr():
        stderr.seek(0)
        sys.stderr.write(stderr.read())
    try:
        try:
            exit_status = main(args=args, **kwargs)
            if ('--download' in args):
                time.sleep(0.5)
        except SystemExit:
            if error_exit_ok:
                exit_status = ExitStatus.ERROR
            else:
                dump_stderr()
                raise
        except Exception:
            stderr.seek(0)
            sys.stderr.write(stderr.read())
            raise
        else:
            if ((not error_exit_ok) and (exit_status != ExitStatus.OK)):
                dump_stderr()
                raise ExitStatusError('httpie.core.main()    unexpectedly    returned    a    non-zero    exit    status:    {0}    ({1})'.format(exit_status, EXIT_STATUS_LABELS[exit_status]))
        stdout.seek(0)
        stderr.seek(0)
        output = stdout.read()
        try:
            output = output.decode('utf8')
        except UnicodeDecodeError:
            r = BytesCLIResponse(output)
        else:
            r = StrCLIResponse(output)
        r.stderr = stderr.read()
        r.exit_status = exit_status
        if (r.exit_status != ExitStatus.OK):
            sys.stderr.write(r.stderr)
        return r
    finally:
        stdout.close()
        stderr.close()
        env.cleanup()

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

def http(*args, **kwargs):