how to remove indentation error in this program?

Question

x=list[range(0,100,2)]
for a in x:
print(a*2)

Answer 1

give 4 spaces in the line after the 'for' loop

x=list[range(0,100,2)]
for a in x:
print(a*2)

Answer 2

x=list[range(0,100,2)]
for a in x:
print(a*2)