#!/usr/bin/env python

import gc
import subprocess
import sys
import time
import uuid
from xml.etree.ElementTree import XML
# from xml.etree.cElementTree import XML

begin = r'<emails>'
item = r'''<email-item><email><Metadata><MessageID>%s</MessageID><Generator>10.64.71.20</Generator></Metadata><SessionInfo><ArrivalTime>1300179722 834578</ArrivalTime><Sender>sender@sender.com</Sender><Recipients><Recipient>recipient@recipient.com</Recipient></Recipients></SessionInfo><Policy><PolicyDomain>
</PolicyDomain></Policy></email></email-item>'''
end = r'</emails>'


def system(shcmd, prefix):
    p = subprocess.Popen(shcmd, shell=True, stdout=subprocess.PIPE)
    output, _ = p.communicate()
    output = output.decode('utf-8')
    sys.stdout.write(prefix + output)


def ps_v(prefix):
    system('ps v | grep "%s[%s]"' % (__file__[:-1], __file__[-1:]),
           prefix=prefix)


def gen_xml():
    parts = [begin]
    for x in range(8000):
        parts.append(item % uuid.uuid4())
    parts.append(end)
    return ''.join(parts)


def main():
    x = []
    system('ps v | head -1', prefix='--- ')
    for i in range(10):
        ps_v('% 3d ' % i)
        x.append(XML(gen_xml()))


if __name__ == '__main__':
    print('*** Python %s.%s.%s %s' % sys.version_info[:4])
    main()
    ps_v('END ')
    gc.collect()
    ps_v(' GC ')
    time.sleep(1)
    ps_v('*** ')