PyMySQL Update E-Mail Records with 2 DB

#!/usr/bin/env python
# -*- coding: utf-8 -*-
import pymysql

# Connect to the source database
connection = pymysql.connect(host='mariadb55.websupport.sk',
                             port=3310,
                             user='my_db_user',
                             passwd='my_db_pass',
                             db='my_db_name',
                             charset='utf8mb4',
                             cursorclass=pymysql.cursors.DictCursor)

# Select All E-Mails from Unregistered Database
with connection.cursor() as cursor:
        sql = "SELECT `email` FROM `mail_unregistered`"
        cursor.execute(sql)
        result = cursor.fetchall()

# Add it to list
bad_emails = []

for x in result:
    si_mail = str(x['email']).replace('\n','').replace(' ','')
    bad_emails.append(si_mail)

# Close connection to Database
cursor.close()
connection.close()

print("\n### Prosessing... ###\n")

# Connect to second database
connection = pymysql.connect(host='mariadb55.websupport.sk',
                             port=3310,
                             user='my_dbuser',
                             passwd='my_db_pass',
                             db='my_db_name',
                             charset='utf8mb4',
                             cursorclass=pymysql.cursors.DictCursor)

# Select All E-Mails from DB where Group ID is not equal 1 (In this case already Unsubscribered)
with connection.cursor() as cursor:
        sql = "SELECT `sub_mail` FROM `subscribers` WHERE `GID` != 1"
        cursor.execute(sql)
        result = cursor.fetchall()

# Add it to list
good_emails = []
for x in result:
    si_mail = str(x['sub_mail']).replace('\n','').replace(' ','')
    good_emails.append(si_mail)

# If E-Mail from first list (Unsubscribers) is in second list Update its record in Database with Group ID 1
for mail in bad_emails:
    if mail in good_emails :
        print ("Duplicate : " + mail)
        with connection.cursor() as cursor:
            sql = "UPDATE `subscribers` SET `GID`=1 WHERE `sub_mail` LIKE %s"
            cursor.execute(sql, (mail))
            print(cursor.description)
            print ("Group changed to Unsubscribers")
    # else :
    #     print ("\nUnique : " + mail)

# Close Connection
cursor.close()
connection.close()
print("\n### Finished ###\n")
print "DB Unsubscribers : " + str(len(bad_emails))
print "DB Lethe : " + str(len(good_emails))