code: def lint():
      
      path = os.path.realpath(os.getcwd())
      cmd = 'flake8 %s' % path
      opt = ''
      print(">>> Linting codebase with the following command: %s %s" % (cmd, opt))
  
      try:
          return_code = call([cmd, opt], shell=True)
          if return_code < 0:
              print(">>> Terminated by signal", -return_code, file=sys.stderr)
          elif return_code != 0:
              sys.exit('>>> Lint checks failed')
          else:
              print(">>> Lint checks passed", return_code, file=sys.stderr)
      except OSError as e:
          print(">>> Execution failed:", e, file=sys.stderr)
docs: run linter on our code base.