title: ValueError: insecure string pickle, python
body: <p>I have dumped a variable by python 2.7 as below:</p>
  
  <pre><code>import cPickle as pickle    
  f1 = open('./data.pickle','wb')
  pickle.dump(datasets,f1)
  f1.close()
  </code></pre>
  
  <p>And, the way to load is as below, but with python 2.6.6:</p>
  
  <pre><code>f1=open('./data.pickle' ,'rb')
  dataset=pickle.load(f1)
  f1.close()
  </code></pre>
  
  <p>Wondering why I am getting the following error:</p>
  
  <pre><code>Traceback (most recent call last):
    File "&lt;stdin&gt;", line 1, in &lt;module&gt;
  ValueError: insecure string pickle
  </code></pre>