I am writing a code for shift cipher but I am not getting the answer... Please say me where am I wrong

Question

a=['a'.......'z']
b=['p','l']

i=j=0
while j <2
if a [i]=b [j]
k=0
while k <26
b [j]=a [i+k ]
print (b[j])
k=k+1
i=i+1
j=j+1

Answer 1

After the 1st while loop:

while j < 2:
if a[i] = b[j]:
That's not comparing values, use == instead.