title: I want to install tensorflow version 1.14 in Google colab but failed
body: <p>I need to test a code in Google colab which is not supported in tf2(for tf.ceil is not supported in tf2), so I want to install tensorflow in version 1.14. I use pip3 and pip to install tensorflow, all of them install tf successfully, but as I do this:</p>
  
  <pre><code>import tensorflow as tf
  tf.__version__
  </code></pre>
  
  <p>It returns:</p>
  
  <pre><code>'2.2.0-rc3'
  </code></pre>
  
  <p>And I have clear sys.path:</p>
  
  <pre><code>import sys
  sys.path
  </code></pre>
  
  <p>It returns:</p>
  
  <pre><code>[]
  </code></pre>
  
  <p>How can I install tensorflow in version 1.14?</p>