AttributeError:模块“os”没有属性“waitid”

Question

使用saspy.SASsession()时出现以下错误：

Traceback (most recent call last):
File "/opt/anaconda3/lib/python3.7/site-packages/saspy/sasiostdio.py", line 209, in del
self._endsas()
File "opt/anaconda3/lib/python3.7/site-packages/saspy/sasiostdio.py", line 376, in _endsas
self._getlog(wait=1)
File "/opt/anaconda3/lib/python3.7/site-packages/saspy/sasiostdio.py", line 402, in _getlog
rc = os.waitid(os.P_PID, self.pid, os.WEXITED | os.WNOHANG)
AttributeError: module 'os' has no attribute 'waitid'
Traceback (most recent call last):
File "", line 1, in
AttributeError: module 'os' has no attribute 'waitid'

桌面信息：

• 操作系统：macos MOJAVE[Linux]
• SAS版本：9.4M4
• Python版本：Python 3.7.4[Clang 4.0.1（tags/RELEASE\u 401/final）]