import re
rx = r"https*://[\w.]+\.[\w/-]*|[\w.]+\.[a-zA-Z]*/[\w/-]+|\w+"
message = 'this is a test: https://www.google.com'
print( re.findall(rx, message) )
aW1wb3J0IHJlCnJ4ID0gciJodHRwcyo6Ly9bXHcuXStcLltcdy8tXSp8W1x3Ll0rXC5bYS16QS1aXSovW1x3Ly1dK3xcdysiCm1lc3NhZ2UgPSAndGhpcyBpcyBhIHRlc3Q6IGh0dHBzOi8vd3d3Lmdvb2dsZS5jb20nCnByaW50KCByZS5maW5kYWxsKHJ4LCBtZXNzYWdlKSAp