Using a nested for loop in python

Question

Print:

86420
02468
86420
02468

My code:

num = '86420'
reverse = ' '
for x in range (len(num), 0, -1):
for y in range (len(num), 0, -1):
reverse +=num[a-1]
print(reverse)
print()

Answer 1

num = '86420'
for x in range ( len( num ) ):
print( num )
num = num[ : : -1 ]

Answer 2

using list comprehension
[print("86420"[::-1] if i%2 else "86420") for i in range(4)]

Answer 3

num='Abhishek kumar'
reverese=num[::-1]
print(reverese)
a=len(num)
b=''
for x in range(a-1,-1,-1):
b=b+num[x]
print(b)