open("emails.txt", "a+", encoding="utf-8").writelines([''.join(__import__('random').choices([chr(_) for _ in range(65, 91)] + [chr(_) for _ in range(97, 122)] + ['-'] + [chr(_) for _ in range(97, 122)] + [chr(_) for _ in range(48, 58)], k=31)) + "gmail.com\n" for _ in range(20000)])