import sys import os thirdPartyDir = "C:\\Users\\slumber\\repos\\phd\src\\2019_rcf\\libs" if thirdPartyDir in sys.path: print('Third party module already added') else: print('Adding local modules dir to the path') sys.path.insert(0, thirdPartyDir) import umsgpack import bpy import esper #c = umsgpack.packb("test") #print(umsgpack.unpackb(c))