String Slicing

s = input('Enter the string: ')
i = int(input('Enter i: '))
j = int(input('Enter j: '))
k = int(input('Enter k: '))
if i == 0:
    i == ''
if j == -1:
    j == ' '
if k == 1:
    k == ' '
slicing = s[i:j:k]
print(s,'[',i,':',j,':',k,'] returns',slicing)