convert output of `ping domain > file` into a graph

pingplot.py

import sys
import re
import matplotlib.pyplot as plot

file_name = sys.argv[1]
with open(file_name) as f:
    data = f.read()

domain = re.search('PING (.+) 56', data)
seq = re.findall('icmp_seq=(\d+)', data)
time = re.findall('time=([\d\.]+) ms', data)
seq = list(map(int, seq))
time = list(map(float, time))

plot.title(domain.group(1))
plot.ylabel('rtt (ms)')
plot.xlabel('time (s)')
plot.plot(seq, time)
plot.show()