Python3.7 way to achieve verification code

import  random
import time

DEF Login ():
     for Frequency in Range (. 3 ):
             # generate a combined list of letters + numbers 
        num_lst = [I for I in Range (10 )]
        [num_lst.append (CHR (J)) for J in Range (97,123 )]
             # random.sample (List, NUM) list, the number of bits in the six-digit random list 
        RET = random.sample (num_lst, 6 )
         Print (ret)
        NUM = List (INPUT ( ' Please enter this code: ' ))
         IF [STR (X) for X in RET] == [STR (Y) for Y in NUM]:
             Print ( " successful login " )
             BREAK 
        the else :
             Print ( ' Login failed ' )
             IF Frequency == 1 :
                 Print ( ' You have one more chance to enter, or they will lock 5 seconds ' )
     the else :
        time.sleep(5)
login()