Recipe: argparse with Jython 2.5.1

Alexander Ljungberg — Wed, 01 Sep 2010 20:08:08 +0000

To quickly install the new argparse module into Jython 2.5.1, cd into the folder where jython2.5.1 is and run something like this:

wget http://peak.telecommunity.com/dist/ez_setup.py
jython ez_setup.py
jython2.5.1/bin/easy_install argparse

Tested on Mac OS X.

Hexahexacontadecimal

Alexander Ljungberg — Tue, 15 Jun 2010 04:20:48 +0000

Just as Babylonians wisely counted in sexagesimal, the wise web developer is naturally drawn to hexahexacontadecimal. With an alphabet consisting of all unreserved URL characters:

0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_.~

we get a radix of 66, the densest possible way to express a number in a URL. In hexahexacontadecimal the unsightly number 302 231 454 903 657 293 676 544 turns into the sleek i FsG UkO .0t sxw. Behold, the pinnacle of URL numeral systems.

def hexahexacontadecimal_encode_int(n):
  """Represent a number in hexahexacontadecimal."""
  alphabet = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_.~"
  if n == 0:
    return alphabet[0]
  r = StringIO()
  while n > 0:
    n, t = divmod(n, 66)
    r.write(alphabet[t])
  return r.getvalue()[::-1]

(You could have called this base66 or base 66 but why would you?)

SlevenBits

Recipe: argparse with Jython 2.5.1

Hexahexacontadecimal