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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_kerberos_ticket(username, password):
 """Attempts to create a Kerberos ticket for a user. Args: username The username. password The password. Returns: Boolean indicating success or failure of ticket creation """


        cache = "/tmp/ion-%s" % uuid.uuid4()

        logger.debug("Setting KRB5CCNAME to 'FILE:{}'".format(cache))
        os.environ["KRB5CCNAME"] = "FILE:" + cache

        try:
            realm = settings.CSL_REALM
            kinit = pexpect.spawnu("/usr/bin/kinit {}@{}".format(username, realm), timeout=settings.KINIT_TIMEOUT)
            kinit.expect(":")
            kinit.sendline(password)
            returned = kinit.expect([pexpect.EOF, "password:"])
            if returned == 1:
                logger.debug("Password for {}@{} expired, needs reset".format(username, realm))
                return "reset"
            kinit.close()
            exitstatus = kinit.exitstatus
        except pexpect.TIMEOUT:
            KerberosAuthenticationBackend.kinit_timeout_handle(username, realm)
            exitstatus = 1

        if exitstatus != 0:
            try:
                realm = settings.AD_REALM
                kinit = pexpect.spawnu("/usr/bin/kinit {}@{}".format(username, realm), timeout=settings.KINIT_TIMEOUT)
                kinit.expect(":")
                kinit.sendline(password)
                returned = kinit.expect([pexpect.EOF, "password:"])
                if returned == 1:
                    return False
                kinit.close()
                exitstatus = kinit.exitstatus
            except pexpect.TIMEOUT:
                KerberosAuthenticationBackend.kinit_timeout_handle(username, realm)
                exitstatus = 1

        if "KRB5CCNAME" in os.environ:
            subprocess.check_call(['kdestroy', '-c', os.environ["KRB5CCNAME"]])
            del os.environ["KRB5CCNAME"]

        if exitstatus == 0:
            logger.debug("Kerberos authorized {}@{}".format(username, realm))
            return True
        else:
            logger.debug("Kerberos failed to authorize {}".format(username))
            return False