title: Why is Data loading as Nan in Mongodb (PyMongo)
body: <p>I have a column in CSV which is empty, but when loaded  into MongoDb (by using Pymonogo), I am getting as &quot;NaN&quot;. How can I set it to Blank (Empty string,&quot;&quot;) by default. I don't want to run a replace command as every time I don't want to replace &quot;NaN&quot; with &quot;&quot;.</p>
  <p>Regards,</p>
  <p>Smar</p>