On 2010-10-08, Grant Edwards <inva...@invalid.invalid> wrote: > On 2010-10-07, Rog??rio Brito <rbr...@ime.usp.br> wrote: > >> If possible, I would like to simply declare the list and fill it >> latter in my program, as lazily as possible (this happens notoriously >> when one is using a technique of programming called dynamic >> programming where initializing all positions of a table may take too >> much time in comparison to the filling of the array). > > At first you say you want a list, later you say you want an array. > They're two different things. Arrays are variable-length and can be > heterogeneous.
I meant _Lists_ are fixed-length and homogeneous > If what you really want is a fixed-length, homogeneous array, then > use an array instead of a list: > > http://docs.python.org/library/array.html Actually, that's not the right link either. I was thinking more of NumPy arrays, where you can create an arbitrary sized homogeneous array of a desired type (either uninitialized or filled with zeros or ones): http://www.scipy.org/Tentative_NumPy_Tutorial#head-d3f8e5fe9b903f3c3b2a5c0dfceb60d71602cf93 If you're crunching so many numbers that initializing a list is a problem, then you probably ought to be using NumPy. -- Grant Edwards grant.b.edwards Yow! for ARTIFICIAL at FLAVORING!! gmail.com -- http://mail.python.org/mailman/listinfo/python-list
