def test()

in ambari-metrics-host-monitoring/src/main/python/psutil/psutil/__init__.py [0:0]
58 lines of code
20 McCabe index (conditional complexity)

def test():
    """List info of all currently running processes emulating ps aux
    output.
    """
    import datetime
    from psutil._compat import print_

    today_day = datetime.date.today()
    templ = "%-10s %5s %4s %4s %7s %7s %-13s %5s %7s  %s"
    attrs = ['pid', 'cpu_percent', 'memory_percent', 'name', 'cpu_times',
             'create_time', 'memory_info']
    if _POSIX:
        attrs.append('uids')
        attrs.append('terminal')
    print_(templ % ("USER", "PID", "%CPU", "%MEM", "VSZ", "RSS", "TTY",
                    "START", "TIME", "COMMAND"))
    for p in process_iter():
        try:
            pinfo = p.as_dict(attrs, ad_value='')
        except NoSuchProcess:
            pass
        else:
            if pinfo['create_time']:
                ctime = datetime.datetime.fromtimestamp(pinfo['create_time'])
                if ctime.date() == today_day:
                    ctime = ctime.strftime("%H:%M")
                else:
                    ctime = ctime.strftime("%b%d")
            else:
                ctime = ''
            cputime = time.strftime("%M:%S",
                                    time.localtime(sum(pinfo['cpu_times'])))
            try:
                user = p.username()
            except KeyError:
                if _POSIX:
                    if pinfo['uids']:
                        user = str(pinfo['uids'].real)
                    else:
                        user = ''
                else:
                    raise
            except Error:
                user = ''
            if _WINDOWS and '\\' in user:
                user = user.split('\\')[1]
            vms = pinfo['memory_info'] and \
                int(pinfo['memory_info'].vms / 1024) or '?'
            rss = pinfo['memory_info'] and \
                int(pinfo['memory_info'].rss / 1024) or '?'
            memp = pinfo['memory_percent'] and \
                round(pinfo['memory_percent'], 1) or '?'
            print_(templ % (user[:10],
                            pinfo['pid'],
                            pinfo['cpu_percent'],
                            memp,
                            vms,
                            rss,
                            pinfo.get('terminal', '') or '?',
                            ctime,
                            cputime,
                            pinfo['name'].strip() or '?'))