looks nice. is there an oposite function of ord() so I could also bring a binary number also back to ascii.
the speed matters if you plan to exchange about 10 M ascii chars and don't wont to wait a year for the results. :) On 9 kol, 15:39, John Machin <[EMAIL PROTECTED]> wrote: > On Aug 9, 11:18 pm, azrael <[EMAIL PROTECTED]> wrote: > > > Hy folks, > > > I googled, and searched, and can not bealive that I have not found a > > built in way to convert the easy and elegant python way a function to > > easily convert simple ascii data to binary and back. > > > I've written some my own but they were pretty slow using binascii > > linbrary with hexifly and unhexifly functions conbined with a > > lookuptable of binary and hex values. > > > Any idea how to easily write a function that recieves a character or > > string and returns a binary number like: > > ascii("1") is converted to bin("00110001") > > Here's one way: > > >>> def a2b(a): > > ... ai = ord(a) > ... return ''.join('01'[(ai >> x) & 1] for x in xrange(7, -1, -1)) > ... > > >>> a2b('1') > '00110001' > >>> a2b('2') > '00110010' > >>> a2b(chr(0)) > '00000000' > >>> a2b(chr(255)) > '11111111' > > BUT ... why are you doing this so much that the speed matters??? -- http://mail.python.org/mailman/listinfo/python-list