Combination from lowercase and digits

bucle_function_vs._List_Comprehensions.py

lowercase = 'abcdefghijklmnopqrstuvwxyz'
digits = '0123456789'

#List Comprehensions form
answer = [i+j+k+l for i in lowercase for j in lowercase for k in digits for l in digits]

#traditional form
answer2=[]
for a in lowercase:
    for b in lowercase:
        for c in digits:        
            for e in digits:
                answer2.append(a+b+c+e)

print(correct_answer == answer)
print(correct_answer == answer2)