Tail recursion in Python

Problem: When marshalling an object to be able to transmit to or from an XMLRPC server and the xmlrpc lib is insufficient to the task because the objects within the main object do not implement a marshal method.

Admittedly the datetime, mxDateTime and None objects should just know what to do if asked by the xmlrpclib to marshal themselves, but in this case, I want to do this myself.

Answer: Here is a tail recursive way to perform this task. This should not use any stack space, but I cannot confirm this since I am not sure what is going on in the interpreter.

def __convertNonMarshalables(self, obj):
  if type(obj) == type({}):
    for key, value in obj.items():
       if value is None:
        obj[key] = ""
      elif type(value) is type(mx.DateTime.now()) or type(value) is type(datetime.datetime.now()):
        obj[key] = value.strftime('%Y-%m-%d')
      elif type(value) == type([]) or type(value) == type({}):
        value = self.__convertNonMarshalables(value)
  elif type(obj) == type([]):
    for value in obj:
      if value is None:
        value = ""
      elif type(value) is type(mx.DateTime.now()) or type(value) is type(datetime.datetime.now()):
        value = value.strftime('%Y-%m-%d')
      elif type(value) == type([]) or type(value) == type({}):
        value = self.__convertNonMarshalables(value)
  else:
    if obj is None:
      obj = ""
  return obj

Leopard killed TextMate, sort of

Just updated Leopard and now having "#!/bin/sh" in the "command(s)" section of the bundle editor for any bundle yields "bad interpreter: no such file or directory" if I remove the directive, it works fine, but now on the shell bundle, the run command script is a ruby script and TextMate will not take #!/usr/bin/env ruby, yields bad interpreter again, but I really need to tell TextMate this is a ruby script. So I ran the script with ruby -e'do something'. That is weak sauce but it works. I also noticed circular dependencies in the bundles. You need ruby to run a python script in the python bundle; you need bash to run a ruby script, you need ruby to run a shell script.

I am not sure why this is because the text in command(s) should be treated as a shell script. Anyway, if anyone else has this problem, then removing the shell directive line should help.