import re

line='/link/abcd/fdfs'
pattern='/link/abcd(\/.*)$'
m=re.match(pattern,line)
if (m):
	print "Okay"
else:
	print "WTF????"

import re

line='/link/abcd'
pattern='^/link/(abcd)/(.*)$'
m=re.match(pattern,line)
if (m):
	print "Okay"
else:
	print "WTF????"