Mega-dir() or my cool snippet of the day

[Kevin Jacobs]

Hi all,

  I'm usually pretty quiet around here, but I feel like making a little
noise.  Here is my cool snippet of the day, to enhance the behavior of the
somewhat anemic dir builtin.  Very useful when used in conjunction with
rlcompleter.py.  e.g.:

  import readline, rlcompleter, megadir
  rlcompleter.dir = megadir.megadir
  readline.parse_and_bind("tab: complete")

megadir.py:
-------------------------------------------------------
# Not the most efficient implementation, but not bad for
# a 10 minute hack.

import types

def unique(seq):
  out = []
  if len(seq):
    out.append(seq[0])
  for i in range(1,len(seq)):
    if seq[i] != seq[i-1]:
      out.append(seq[i])
  return out

def megadir(obj = globals()):
  ldir = []
  for b in getattr(obj, '__bases__', []):
    ldir.extend(megadir(b))
  if type(obj) == types.InstanceType:
    ldir.extend( megadir(obj.__class__) )
  ldir.extend(dir(obj))
  ldir.sort()
  return unique(ldir)

def test():
  class A:
    def a(): pass
  class B:
    def b(): pass
  class C(A):
    def c(): pass
  class D(B,C):
    def d(): pass
    def a(): pass

  d = D()
  print 'dir =',dir(d)
  print 'megadir =',megadir(d)

if __name__ == '__main__':
  test()


-- 
----------->  Kevin Jacobs  <-----------|------->  (216) 778-8487  <--------
S.A.G.E. Project Technical Coordinator  | Department of Epidemiology
  & System Administrator                |   & Biostatistics
Internet E-mail: jacobs at darwin.cwru.edu | Case Western Reserve University
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