numpy package not defined when importing function from another .py file

Question

In my master file I have:

import matplotlib.pyplot as plt
import seaborn
import numpy as np
import time

import sys
sys.path.append("C:/.../python check/createsplit")
import createsplit

data='MJexample'
X,Y,N,Ntr=create_training_data(data)

where I am calling create_training_data function from createsplit.py file which is:

import numpy as np
import scipy.io

def create_training_data(data_type):
     """
     creates training data
     """
     if data_type=='MJexample':
         N=300
         Ntr = 150
         X=np.linspace(0,1,N)
         X = np.array([X,X*X,np.linspace(5,10,N),np.sin(X),np.cos(X),np.sin(X)*np.cos(X)]).T

         fac=40
         Y=np.array([np.sin(fac*x)*np.cos(fac*x**2) for x in X[:,0]])[:,None]

         _X=X
         _Y=Y
         return _X,_Y,N,Ntr

However running my original file results in error: NameError: global name 'np' is not defined for some reason I do not understand. I assume I am importing the functions in a wrong way but I don't really understand what would be wrong.

You want X,Y,N,Ntr=createsplit.create_training_data(data). — cs95
– cs95, Commented Jun 6, 2017 at 8:06

Franz · Accepted Answer · 2017-06-06 08:13:03Z

1

I think this issue raises just because of a wrong call of the function. Try

X, Y, N, Ntr = createsplit.create_training_data(data)

instead, and it should work.

answered Jun 6, 2017 at 8:13

Franz

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