rpy breaks if a file called "None" is present

[Derek Broughton]

Ivo Timmermans wrote:

> /home/ivo/os.py in __setitem__(self, key, item)
>     474                 self.data = environ
>     475             def __setitem__(self, key, item):
> --> 476                 putenv(key, item)
>     477                 self.data[key] = item
>     478             def update(self,  dict=None, **kwargs):
> 
> <type 'exceptions.TypeError'>: putenv() argument 2 must be string, not
> None
> 
> 
> The problem here is that there is a file called "None" in the current
> directory of ipython.  rpy_tools's get_R_USER() function checks whether
> that file exists, and happily returns None if it does.
 
Surely that's not a bug in rpy I would have thought python would _always_
have a problem with files named "None".  If "None" was actually part of the
ipython package, I'd think that's where the error lies.
-- 
derek