[IPython-user] Re: ipython as zope interactive console

[Jeff Kowalczyk]

Fernando Perez wrote:
>> - Effective user is a bit of a problem. IPython tries to write history,
>> etc. into /root/.ipython/ when it is no longer that (root) user.
> 
> I imagine that if the ipython import calls are made once the UID has been
> switched, this should be OK.  But a bit more work may be needed here.
> 

This is what I see when canceling out of ipython:

Do you really want to exit ([y]/n)? y
Unable to save IPython command history to file: '/root/.ipython/history'
Error in sys.exitfunc:
---------------------------------------------------------------------------
IOError                                       Python 2.3.4: /usr/bin/python
                                                   Tue Oct  5 17:13:21 2004
A problem occured executing Python code.  Here is the sequence of function
calls leading up to the error, with the most recent (innermost) call last.

/usr/lib/python2.3/atexit.py in _run_exitfuncs()
      5 One public function, register, is defined.
      6 """
      7
      8 __all__ = ["register"]
      9
     10 _exithandlers = []
     11 def _run_exitfuncs():
     12     """run any registered exit functions
     13
     14     _exithandlers is traversed in reverse order so functions are executed
     15     last in, first out.
     16     """
     17
     18     while _exithandlers:
     19         func, targs, kargs = _exithandlers.pop()
---> 20         func(*targs, **kargs)
        func = <bound method InteractiveShell.atexit_operations of <IPython.iplib.InteractiveShell instance>>, targs = (), kargs = {}
     21
     22 def register(func, *targs, **kargs):
     23     """register a function to be executed upon normal program termination
     24
     25     func - function to be called at exit
     26     targs - optional arguments to pass to func
     27     kargs - optional keyword arguments to pass to func
     28     """
     29     _exithandlers.append((func, targs, kargs))
     30
     31 import sys
     32 if hasattr(sys, "exitfunc"):
     33     # Assume it's another registered exit function - append it to our list
     34     register(sys.exitfunc)
     35 sys.exitfunc = _run_exitfuncs

/usr/lib/python2.3/site-packages/IPython/iplib.py in atexit_operations(self=<IPython.iplib.InteractiveShell instance>)
    763         """This will be executed at the time of exit.
    764
    765         Saving of persistent data should be performed here. """
    766
    767         # input history
    768         self.savehist()
    769
    770         # Cleanup all tempfiles left around
    771         for tfile in self.tempfiles:
    772             try:
    773                 os.unlink(tfile)
    774             except OSError:
    775                 pass
    776
    777         # save the "persistent data" catch-all dictionary
--> 778         pickle.dump(self.persist, open(self.persist_fname,"w"))
        global pickle = <module 'cPickle' from '/usr/lib/python2.3/lib-dynload/cPickle.so'>, global dump = undefined, self = <IPython.iplib.InteractiveShell instance>, global persist = undefined, global open = undefined, global persist_fname = undefined
    779
    780     def savehist(self):
    781         """Save input history to a file (via readline library)."""
    782         try:
    783             self.readline.write_history_file(self.histfile)
    784         except:
    785             print 'Unable to save IPython command history to file: ' + \
    786                   `self.histfile`
    787
    788     def pre_readline(self):
    789         """readline hook to be used at the start of each line.
    790
    791         Currently it handles auto-indent only."""
    792
    793         self.readline.insert_text(' '* self.readline_indent)

IOError: [Errno 13] Permission denied: '/root/.ipython/persist'
Could not create crash report on disk.


I don't yet *know* that the console has switched from root to the zope
effective-user, but that's what it looks like.