import re
f = open("lista.txt")
f2 = open("listay.txt", "w")
uniquelines = set(f.read().split("\n"))

for line in uniquelines:
	x = line.split(":")
	if re.search('^[a-zA-Z0-9_]{2,16}$', x[0]) and len(x) == 2 and x[1]:
		f2.write("--" + "\n" "Username: " + x[0] + "\n" + "Password: " + x[1] + "\n")
f2.write("--")
f2.close()