if mac != str(bas[5]):

 00:1d:60:f1:da:4c
<class 'str'>
00:1d:60:f1:da:4c
<class 'str'>
your MAC address 00:1d:60:f1:da:4c is wrong.

     with open(pub_file) as File:
        reader = csv.reader(File, delimiter=':')
        for row in reader:
            nodeid_db = row[0]
    cur.execute('SELECT * FROM `permissions` WHERE nodeID = "' + str(nodeid_db) + '"')
    bas = cur.fetchone()
    print(mac)
    print(type(mac))
    print(bas[5])
    print(type(bas[5]))
    
    if mac != str(bas[5]):
        print("your MAC address " + str(mac) + " is wrong.")
        quit()