trace.py

import sys
import subprocess
import re

# REGULAR EXPRESSIONS
# (?=foo)	Lookahead
# (?<=foo)	Lookbehind
# (?!foo)	Negative Lookahead
# (?<!foo)	Negative Lookbehind

host = "www.centos.com"

# ping: to see the total time along the route

ping = subprocess.Popen(
    ["ping", "-c", "10", host],
    stdout = subprocess.PIPE,
    stderr = subprocess.PIPE
)

pingtext, error = ping.communicate()
# matcher for speeds (min,avg,max,mdev)
matcher = re.compile("(\d+.\d+)/(\d+.\d+)/(\d+.\d+)/(\d+.\d+)")
speeds = matcher.search(pingtext).groups()
print speeds #print pingtext

# traceroute: to collect timing info along this route

traceroute = subprocess.Popen(
    ["traceroute", "-q", "5", host],
    stdout = subprocess.PIPE,
    stderr = subprocess.PIPE
)

tracetext, error = traceroute.communicate()

matcher = re.compile("(?<=\()\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}(?=\) )")
ips = matcher.findall(tracetext)
print ips #print tracetext

matcher = re.compile("\d{1,3}\.\d{1,3}(?= ms)")
times = matcher.findall(tracetext)
print times

matcher = re.compile("(?<=  )[a-zA-Z0-9\-\.]+\.[a-zA-Z0-9]{1,5}(?= \()")
urls = matcher.findall(tracetext)
print urls

This is from Asher Martin, for the Cape Cod Web Development Meet Up group.

:)