Le 08/10/2011 15:03, Antoine Pitrou a écrit :
On Fri, 07 Oct 2011 21:14:44 -0600
Jeffrey<jss.b...@gmail.com> wrote:
I would like to suggest adding an integer presentation type for base 36
to PEP 3101. I can't imagine that it would be a whole lot more
difficult than the existing types. Python's built-in long integers
provide a nice way to prototype and demonstrate cryptographic
operations, especially with asymmetric cryptography. (Alice and Bob
stuff.) Built-in functions provide modular reduction, modular
exponentiation, and lots of nice number theory stuff that supports a
variety of protocols and algorithms. A frequent need is to represent a
message by a number. Base 36 provides a way to represent all 26 letters
in a semi-standard way, and simple string transformations can
efficiently make zeros into spaces or vice versa.
Why base 36 rather than, say, base 64 or even base 80?
Base 85 is the most efficient base to format IPv6 addresses!
http://tools.ietf.org/html/rfc1924
And Python doesn't provide builtin function for this base!
Victor
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