On Sun, Oct 31, 2010 at 1:32 AM, Chris Rebert <c...@rebertia.com> wrote:
> On Sat, Oct 30, 2010 at 9:21 PM, André <andre.robe...@gmail.com> wrote: > > On Oct 31, 1:11 am, Chris Rebert <c...@rebertia.com> wrote: > >> On Sat, Oct 30, 2010 at 8:32 PM, André <andre.robe...@gmail.com> wrote: > >> > I'm trying to create pbm (portable bitmap) files using Python 3 and > >> > have run into a problem. The example I am using is the Python 2 > >> > Mandelbrot program found at > >> >http://shootout.alioth.debian.org/u32/program.php?test=mandelbrot&lan. > .. > >> > >> > When I run it using Python 2 with size=100, I get a file of size 1311 > >> > bytes. This file contains the correct image. > >> > >> > When I run it using Python 3 with the same parameter (and replacing > >> > xrange by range - the only change suggested by 2to3), I get a file of > >> > size 1812 bytes; this file does not contain the right image. > >> > >> > Any help would be much appreciated. > >> > >> Have you tried changing all instances of chr(<whatever>) to > >> bytes([<whatever>]) ? > > Yes, I had. And I got the following traceback: > > > > Traceback (most recent call last): > > File "mandel_orig.py", line 39, in <module> > > main() > > File "mandel_orig.py", line 30, in main > > cout(bytes([byte_acc])) > > TypeError: must be str, not bytes > > Ah, right. This is the problem of not having Python 3 to test with. > Try also changing: > cout = sys.stdout.buffer.write > Yes, that worked. Thanks! Now I know what to look for, time to read the documentation for sys.stdout.buffer ... Thanks again. André > > Cheers, > Chris > -- > http://blog.rebertia.com >
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