title: Avoid reloading data each time you want to work on it with Python
body: <p>I have a large dataset that never changes (I never modify it directly). I start by reading it with pandas</p>
  
  <pre><code>dataset = pandas.read_csv(filepath)
  </code></pre>
  
  <p>and then I do some data analysis. The initial file loading takes about 10 seconds and I am currently re-running it every time I change something in the data analysis part. How can I load the data once and for all and run only the analysis part?</p>