import re

s = '<a href="../contact_us.htm" style="text-decoration:none"><font color="#FFFFFF" face="Verdana" size="2">Contact Us</font></a>'
r = re.compile("(([a-z_]+)\.([a-z]+))").split(s)
print(r[1])
#print(r.split(s.replace('"', '\\"')))
# your code goes here