PSSE如何实现小干扰稳定分析？

song222

做小干扰稳定分析时，提示如下内容该如何解决？
/ b) y- \2 ]$ ]5 v# RTraceback (most recent call last):
  File ".\pssneva.py", line 760, in <module>
  File ".\pssneva.py", line 85, in _get_netomac_path
AttributeError: 'module' object has no attribute 'exist'
. L1 W5 y3 a0 s5 z/ {1 }! iCouldn't open Python file:C:\Program Files (x86)\PTI\PSSE31\PSSBIN\pssneva.pyc
6 ~- q% R, s1 E6 _! q! qNo such file or directory
Executing Python file:C:\Program Files (x86)\PTI\PSSE31\PSSBIN\pssneva.pyc
) }  `) F1 v2 R9 ^7 R# R/ A
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