I use Numeric 20.0.0, Python 2.1, and RedHat 7.1 on a PC. Here is a small Python program: import Numeric a = Numeric.zeros((2,2), 'b') print a[0,0], type(a[0,0]) print a[0][0], type(a[0][0]) a = Numeric.zeros((2,2), 'i') print a[0,0], type(a[0,0]) print a[0][0], type(a[0][0]) a = Numeric.zeros((2,2), 'f') print a[0,0], type(a[0,0]) print a[0][0], type(a[0][0]) The output is: 0 0 0 0 0.0 0.0 This can't be correct. "a[0,0]" and "a[0][0]" should have the same type. A quick check of my old Python code shows that this problem may have appeared since Numeric version 17. Thanks, Ed Jones