title: What's the different between Python ABI "cp37" and "cp37m"?
body: <p>I've been playing around with <code>pip3 download</code> and found that some packages were obtainable by specifying a Python ABI of <code>cp37m</code>, while others were obtainable by specifying a Python ABI of <code>cp37</code>.</p>
  
  <p>What's the different between the <code>cp37m</code> and <code>cp37</code> ABIs, and where can I find a list of available ABIs with  descriptions? </p>