title: pip ERROR: Invalid requirement: '==' in colab
body: <p>I'm trying to install a specific version of the albumentations library by doing:</p>
  <pre><code>!pip install albumentations == 0.4.6
  </code></pre>
  <p>and I get this really weird error:</p>
  <pre><code>ERROR: Invalid requirement: '=='
  </code></pre>
  <p>How can I fix this?</p>