import regex as re


def get_email_addresses(usr_input: str) -> list:
    return re.findall(r"^[A-Za-z0-9!#$%&'*+=?^_`{|}~.\-\/]{1,64}@[a-zA-Z0-9.\-]+$", usr_input)


def return_email_addresses_in_file(file_name: str) -> list:
    f = open(file_name, "r")
    email_addresses = []
    for line in f:
        email_addresses_from_line = get_email_addresses(line)
        if email_addresses_from_line:
            email_addresses.append(email_addresses_from_line)
    f.close()
    return email_addresses


if __name__ == '__main__':
    usr_input = input("Podaj nazwe pliku: ")
    for email in return_email_addresses_in_file(usr_input):
        print(email)