Re: [Tutor] moving widgets around
I recently had occasion for drag 'n drop functionality in Tkinter, and after much searching around decided that tkdnd.py was the only viable solution (at least, that I could find). The code is actually quite understandable (well, at the 'large chunks' level). In the directory where tkdnd.py is located simply type: pythonw tkdnd.py and it will work. If you find anything simpler or more bare bones, please let us know. John Miller On Dec 29, 2004, at 4:25 PM, Sean McIlroy <[EMAIL PROTECTED]> wrote: I'd like to get some example code showing how to move widgets around in drag-and-drop fashion. I've tried looking at tkDND.py (I think that's what it's called) but that was a little involved - what I want to know is the barest of bare bones. Any help would be majorly fabulous. Merci beaucoup. STM ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] primes - sieve of odds
On Mar 24, 2005, at 6:01 AM, C Smith <[EMAIL PROTECTED]> wrote: What follows is an attempt based on the previous tutor-evolved sieve that extends the range in which to find the next prime by a factor of 2 over the last known prime. A similar algorithm is on ASPN (I bellieve), under Space-efficient version of sieve of Eratosthenes. D. Eppstein, May 2004 Oh, please...ignore what I suggested and look at Eppstein's code. It's a thing of beauty and just keeps chugging out primes well past what the inefficient version that I suggested could do with the same memory. It's a "tortoise and hare" race as the memory gets chewed up by the esieve approach. The ASPN version of Eppstein's program is an older one than the one at the following site: http://www.ics.uci.edu/~eppstein/PADS/Eratosthenes.py How does one actually use this module? For example: >>> import eratosthenes >>> eratosthenes.primes() >>> eratosthenes.primes().next() 2 >>> eratosthenes.primes().next() 2 >>> eratosthenes.primes().next() 2 How does one get beyond the first prime? Thanks, John ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
