title: IndentationError: expected an indented block, python (if/else)
body: <p><strong>I can't find the error</strong></p>
  
  <pre><code>def free_car(lane_a,lane_b,lane_c):
      cars_a = len(lane_a)
      cars_b = len(lane_b)
      cars_c = len(lane_c)
  
      if cars_c &gt;= 7:
          #free_1_c
          if cars_a &gt;= cars_b:
              #free_1_a
              #free_1_b
          else:
              #free_1_b
              #free_1_a
      elif cars_a &gt;= cars_b:
          #free_1_a
          if cars_b &gt; cars_c:
              #free_1_b
              #free_1_c
          else:
              #free_1_c
              #free_1_b
      elif cars_b &gt; cars_a and cars_b &gt; cars_c:
          #free_1_b
          if cars_a &gt; cars_c:
              #free_1_a
              #free_1_c
          else:
              #free_1_c
              #free_1_a
      else:
          #we
  </code></pre>
  
  <p>The error starts on the line 11 (on the else after cars_c >= 7) I know its a stupid error and question but i can't figure it out why the error it's there  </p>