title: error in loading pickle
body: <p>Not able to load a pickle file.  I am using python 3.5</p>
  
  <pre><code>import pickle
  data=pickle.load(open("D:\\ud120-projects\\final_project\\final_project_dataset.pkl", "r"))
  </code></pre>
  
  <p>TypeError: a bytes-like object is required, not 'str'</p>
  
  <p>.
  .</p>
  
  <p>Also tried:</p>
  
  <pre><code>import pickle
  data=pickle.load(open("D:\\ud120-projects\\final_project\\final_project_dataset.pkl", "rb"))
  </code></pre>
  
  <p>UnpicklingError: the STRING opcode argument must be quoted</p>
  
  <p>.
  .</p>
  
  <p>Same errors even when using with statements</p>
  
  <pre><code>import pickle
  with open("D:\\ud120-projects\\final_project\\final_project_dataset.pkl", "rb") as f:
      enron_data = pickle.load(f)
  </code></pre>