Help with python code!

[jojo]

Hi - I am a newbie to python and was wondering can someone tell me what the following code does. I need to figure out how to test it

import time
import glob
import re
import os

current_time = time.time() + 60*60+24*30

dirList = glob.glob('\content\paytek\ejbProperties\cybersource\*.crt')

q = re.compile('^Owner:.*CN=([^\s\,]+)')
p = re.compile('until: (\w+) (\w+) (\d+) (\d+):(\d+):(\d+) \w+ (\d+)')
cert_name = ""
days = {"Mon":0, "Tue":1, "Wed":2, "Thu":3, "Fri":4, "Sat":5, "Sun":6}
months = {"Jan":1, "Feb":2, "Mar":3, "Apr":4,
"May":5, "Jun":6, "Jul":7, "Aug":8,
"Sep":9, "Oct":10, "Nov":11, "Dec":12}

for fname in dirList:
cmd = "keytool ­printcert ­file " + fname
for line in os.popen(cmd).readlines():
line = line.rstrip()
m = p.search(line)
if m:
sue = time.mktime(
(int(m.group(7)), int(months[m.group(2)]), int(m.group(3)),
int(m.group(4)), int(m.group(5)), int(m.group(6)),
int(days[m.group(1)]), 0, 0)
)
expire_time = (sue ­ current_time)/60/60/24
if expire_time < 0:
print cert_name + " has already expired!"
elif expire_time < 31:
print cert_name + " expires in " +str(int(expire_time)) + " days"
else:
m = q.search(line)
if m:
cert_name = m.group(1)


Im used to C# so the syntax looks bizarre to me! Any help would be great.