title: How to fix this IndetationError in python?
body: <pre><code>from timeit import Timer
  timer_obj1 = Timer('list_sum()'),
               'from_main_import list_sum'
  timer_obj2 = Timer('numpy_arr_sum()'),
               'from_main_import numpy_arr_sum'
  print('Pure python version:',timer_obj1.timeit(1000))
  print('Numpy version:',timer_obj2.timeit(1000))   
  </code></pre>
  <p>this is the code I key in
  after run it, shows unexpected indent in line 3
  Anyone can help me out, please?</p>