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First check that the path is set properly to find other files needed by these notebooks. Execute the next cell to check...


In [ ]:
import os
from __future__ import print_function
import ptha_paths

try:
    os.chdir(ptha_paths.ptha_dir)
    print("\nAppears to be ok")
except:
    print("\nProblem moving to directory %s" % ptha_paths.ptha_dir)  
    print("Check the path set in the file ptha_paths.py")

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