title: How to check if length of multiple lists are equal in Python?
body: <p>I have multiple lists which should have equal length. But the data is coming from an unreliable source. I have to make sure the multiple lists are of equal length before I process them.
  One way would be to calculate the length of all lists and put them in another list. See if all elements are equal.
  Any other pythonic way to do it?</p>
  <p>This worked!</p>
  <pre><code>if len(list_1) == len(list_2) == len(list_3) == len(list_4):
      #do stuff if all lists equal
  </code></pre>