title: How to read data in Python dataframe without concatenating?
body: <p>I want to read the file f (file size:85GB) in chunks to a dataframe. Following code is suggested.</p>
  
  <pre><code>chunksize = 5
  TextFileReader = pd.read_csv(f, chunksize=chunksize)
  </code></pre>
  
  <p>However, this code gives me TextFileReader, not dataframe. Also, I don't want to concatenate these chunks to convert TextFileReader to dataframe because of the memory limit. Please advise.</p>