import re
pat = r'"[^"]*(http.*?\.(?:jpg|bmp))[^"]*"'
reg = re.compile(pat)
aa = '"http:afd/aa.bmp" :tt: "kkkk" ++, "http--test--http:kk/bb.jpg"'
print reg.findall(aa)
aW1wb3J0IHJlCnBhdCA9IHInIlteIl0qKGh0dHAuKj9cLig/OmpwZ3xibXApKVteIl0qIicKcmVnID0gcmUuY29tcGlsZShwYXQpCmFhID0gJyJodHRwOmFmZC9hYS5ibXAiIDp0dDogImtra2siICArKywgImh0dHAtLXRlc3QtLWh0dHA6a2svYmIuanBnIicKcHJpbnQgcmVnLmZpbmRhbGwoYWEp