title: how to generate barcode in python 3.7
body: <p>I am using python 3.7, for barcode generation I am trying to install pyBarcode library using <code>pip install pyBarcode</code>'. but it shows the following error:</p>
  <p>Could not find a version that satisfies the requirement pyBarcode (from versions: )
  no matching distribution found for pyBarcode</p>
  <p>Now, how can I install <code>pyBarcode</code> for my Python version?</p>