title: Python base32 data decode
body: <p>I am not able to understand why </p>
  
  <pre><code>import base64
  base64.b32decode('siddh===', casefold=True);
  </code></pre>
  
  <p>works but </p>
  
  <pre><code>base64.b32decode('siddha==', casefold=True);
  </code></pre>
  
  <p>throws</p>
  
  <pre><code>TypeError: Incorrect padding
  </code></pre>