def _process_commands(self, data):
        success = True
        defaults = self._context.defaults().get('shell', {})
        with open(os.devnull, 'w') as devnull:
            for item in data:
                stdin = stdout = stderr = devnull
                if isinstance(item, dict):
                    cmd = item['command']
                    msg = item.get('description', None)
                    if item.get('stdin', defaults.get('stdin', False)) not in True:
                        stdin = None
                    if item.get('stdout', defaults.get('stdout', False)) is True:
                        stdout = None
                    if item.get('stderr', defaults.get('stderr', False)) is True:
                        stderr = None
                elif isinstance(item, list):
                    cmd = item[0]
                    msg = item[1] if len(item) > 1 else None
                else:
                    cmd = item
                    msg = None
                if msg is None:
                    self._log.lowinfo(cmd)
                else:
                    self._log.lowinfo('%s [%s]' % (msg, cmd))
                ret = subprocess.call(cmd, shell=True, stdin=stdin, stdout=stdout,
                    stderr=stderr, cwd=self._context.base_directory())
                if ret != 0:
                    success = False
                    self._log.warning('Command [%s] failed' % cmd)
        if success:
            self._log.info('All commands have been executed')
        else:
            self._log.error('Some commands were not successfully executed')
        return success
dataset/ETHPy150Open anishathalye/dotbot/plugins/shell.py/Shell._process_commands/operator `is` -> `not in`