title: What is the difference, if any, between using single quote and double quote in a python dictionary?
body: <p>I declare a python dictionary like this using double quotes;</p>
  
  <pre><code>{
      "Name":"John",
      "Date":"2/18/1998",
      "Profit":25.12
  }
  </code></pre>
  
  <p>The same python dictionary can be written like this using single quotes;</p>
  
  <pre><code>{
      'Name':'John',
      'Date':'2/18/1998',
      'Profit':25.12
  }
  </code></pre>
  
  <p>What is the difference, if any, between the two? What is the best practice in python? Practical-wise, I encounter no difference so far. I'm not sure if I missed out anything.</p>