There are none AFAIK. Allow me to correct my previous comment: using Python's os.spawnlp or Popen to invoke Unix commands has fewer footguns than using the she

There are none AFAIK. Allow me to correct my previous comment: using Python's os.spawnlp or Popen to invoke Unix commands has fewer footguns than using the shell. (Kragen's code only addresses your question of how to set up a pipeline in Python.)