title: Google Colab: Re-setting up Python Modules
body: <p>I recently removed the pre-installed python modules <strong>tensorflow==1.9.0-rc1</strong> and <strong>keras==2.1.6</strong> from <a href="https://colab.research.google.com" rel="nofollow noreferrer">Google Colab</a> to test the older versions of TF and Keras. Now I want to come back to the default settings/modules. So, I re installed both of them using following commands.</p>
  
  <pre><code>!pip uninstall -y tensorflow keras
  !pip install tensorflow==1.9.0-rc1 keras==2.1.6
  </code></pre>
  
  <p>Now, GPU and code are Running (on GPU - checked in Notebook Settings), but the same code takes 40x extra time. So, is there a way to go back to the default settings? or did I make a mistake removing the default packages?</p>
  
  <p>Please guide (I'm new in Machine Learning)</p>
  
  <p>Thank you!</p>