IndentationError: expected an indented block, python (if/else)

Question

I can\'t find the error

def free_car(lane_a,lane_b,lane_c):
    cars_a = len(lane_a)
    cars_b = len(lane_b)
    cars_c = len(lane_c)

             


        

Answer 1

In a block like this:

if cars_a >= cars_b:
    #free_1_a
    #free_1_b
else:
    #free_1_b
    #free_1_a

Since both free_1_a and free_1_b are commented out, they are effectively empty to python. It is illegal.

You can resolve it by adding pass

i.e.

if cars_a >= cars_b:
    #free_1_a
    #free_1_b
    pass
else:
    #free_1_b
    #free_1_a
    pass

pass basically means 'no operation'