Stock_demo data_helper ensure indices are ints before using numpy

Author: jenshnielsen

examples/pylab_examples/data_helper.py

@@ -17,10 +17,10 @@ def get_two_stock_data():
     file2 = cbook.get_sample_data('AAPL.dat.gz')
     M1 = fromstring(file1.read(), '<d')
 
-    M1 = resize(M1, (M1.shape[0]/2, 2))
+    M1 = resize(M1, (int(M1.shape[0]/2), 2))
 
     M2 = fromstring(file2.read(), '<d')
-    M2 = resize(M2, (M2.shape[0]/2, 2))
+    M2 = resize(M2, (int(M2.shape[0]/2), 2))
 
     d1, p1 = M1[:, 0], M1[:, 1]
     d2, p2 = M2[:, 0], M2[:, 1]