title: Python string percent sign escape
body: <p>I am experimenting some string outputs and I came across something that throws an error when printing</p>
  
  <pre><code>x = "ll=%s%2C%20%s" % ("lat", "lng")
  </code></pre>
  
  <p>The syntax above throws an error:</p>
  
  <pre><code>ValueError: unsupported format character 'C' (0x43) at index 7
  </code></pre>
  
  <p>What am I missing here? I wish to have a result of:</p>
  
  <pre><code>ll=lat%2C%20lang
  </code></pre>
  
  <p>With the use of %s operators on concatenating a variable inside a string </p>