code: def execute_pyfile(self, py_exe=None):  # pragma: no cover
          
          import subprocess
  
          self.assert_is_dir_and_exists()
  
          if py_exe is None:
              if six.PY2:
                  py_exe = "python2"
              elif six.PY3:
                  py_exe = "python3"
  
          for p in self.select_by_ext(".py"):
              subprocess.Popen('%s "%s"' % (py_exe, p.abspath))
docs: Execute every ``.py`` file as main script.
  
          :param py_exe: str, python command or python executable path.
  
          **中文文档**
  
          将目录下的所有Python文件作为主脚本用当前解释器运行。