title: Rand Index function (clustering performance evaluation)
body: <p>As far as I know, there is no package available for Rand Index in python while for Adjusted Rand Index you have the option of using <code>sklearn.metrics.adjusted_rand_score(labels_true, labels_pred)</code>. </p>
  
  <p>I wrote the code for Rand Score and I am going to share it with others as the answer to the post.</p>