title: Pandas: Iterating over chunks more than once
body: <p>I've read a CSV into pandas in chunks:</p>
  <pre><code>loansTFR = pd.read_csv('loans_2007.csv', chunksize=3000)
  </code></pre>
  <p>I iterate over it like so:</p>
  <pre><code>for chunk in loansTFR:
      #run code
  </code></pre>
  <p>However, if I want to iterate over the chunks a second time with a second for loop, the code inside the loop isn't executed. The chunks have already iterated through and I cannot read through them a second time. Do I need to read the csv a second time to use another for loop?</p>