[IPython-user] Debugger.Pdb(OldPdb): __IPYTHON__ not defined causes crash

[Peter J. Bismuti]

When I try to embed Python I get an exception __IPYTHON__ not found.  It is 
because Debugger.Pdb() forgets to set __IPYTHON__ in the "hack" copy of 
__init__ (done to avoid importing 'readline').  Adding similar code from 
above seems to have fixed it. 

Is this any help?

-------[embed ipython within my code as per instructions]-----------

#  Debug with IPython?
    if (options.debugIPython):
        try:
            import sys,IPython.ultraTB
            sys.excepthook = IPython.ultraTB.FormattedTB(mode='Verbose', 
color_scheme='Linux', call_pdb=1)
        except:
            sys.stderr.write('Cant use IPython? That sucks!')
            raise

-------[ADD NEW LINES TO Debugger.Pdb]-----------

    else:
        # Ugly hack: for Python 2.3-2.4, we can't call the parent constructor,
        # because it binds readline and breaks tab-completion.  This means we
        # have to COPY the constructor here.
        def __init__(self,color_scheme='NoColor'):
            global __IPYTHON__
            try:
                __IPYTHON__
            except NameError:
                # Outside of ipython, we set our own exception hook manually
                __IPYTHON__ = ipapi.get(True,False)
            bdb.Bdb.__init__(self)


-------[otherwise, I get this when I try to embed]-----------
Error in sys.excepthook:
Traceback (most recent call last):
  File "/acct/pjb9508/Python/local/lib/python/IPython/ultraTB.py", line 870, 
in __call__
    self.debugger()
  File "/acct/pjb9508/Python/local/lib/python/IPython/ultraTB.py", line 847, 
in debugger
    self.pdb.interaction(self.tb.tb_frame, self.tb)
  File "/acct/pjb9508/Python/local/lib/python/IPython/Debugger.py", line 293, 
in interaction
    __IPYTHON__.set_completer_frame(frame)
NameError: global name '__IPYTHON__' is not defined



-- 


Peter Bismuti
Boeing Information Technology
Renton, WA
(425) 234-0873 W
(425) 442-7775 C