title: How to generate standalone parser in Python?
body: <p>I would like to generate a Python parser for a custom language. As I am new to parsing, my only requirement so far is that the generated module shall not depend on the generator.</p>
  <p>I learned Tatsu, as it can generate the parser as Python module. But when I review the generated module, it still begins with</p>
  <pre><code>from tatsu.buffering import Buffer
  from tatsu.parsing import Parser
  from tatsu.parsing import tatsumasu, leftrec, nomem
  ...
  </code></pre>
  <p>Is there a way to generate standalone (depending only on standard Python libraries) parser module using Tatsu? If not, do I have any other option?</p>