> # shouldn't I be able to fill the lists simply by pointing to a location? > > matrix[a_idx, p_idx] = 0x219 # and so on? > Lists are not matrices. For example:
L = [ [1,2,3], ['a','b','c'], 10 ] print L[1][2] # Prints 'c', you will like this syntax but... print L[2][5] # TypeError: 10 is not subscriptable You can create a function that creates a "list of lists" filled with zeros, and then use this data structure as a matrix. BUT! If you need to use matrices filled with numbers, try numarray: http://www.stsci.edu/resources/software_hardware/numarray Numarray is much more efficient for this task. Best, Laszlo -- http://mail.python.org/mailman/listinfo/python-list
