Open PSSE35.0 in Python3.7

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Hi! I tried following script to open PSSE35.0 in Python 3.7:

import os, sys

PSSE_LOCATION = r"C:\Program Files\PTI\PSSE35\35.0\PSSPY37"

sys.path.append(PSSE_LOCATION)

os.environ['PATH'] = os.environ['PATH'] + ';' +  PSSE_LOCATION 

import psspy

But it gave following error:

DLL load failed: The specific module could not be found.

How can i fix this issue?

I tried to use Python 2.7 as well but the error is same.