ipython is crashed without launch.(python3.2)

[yyr]

Just installed ipython for python3 and launched. it crashes with the report.

***************************************************************************

IPython post-mortem report

{'commit_hash': '0021257',
 'commit_source': 'installation',
 'ipython_path': '/home/yagnesh/local/python/lib/python3.2/site-packages/ipython-0.12.dev-py3.2.egg/IPython',
 'ipython_version': '0.12.dev',
 'os_name': 'posix',
 'platform': 'Linux-3.0.0-12-generic-x86_64-with-debian-wheezy-sid',
 'sys_executable': '/home/yagnesh/local/python/bin/python3.2',
 'sys_platform': 'linux2',
 'sys_version': '3.2.2 (default, Nov  2 2011, 02:46:57) \n[GCC 4.6.1]'}

***************************************************************************



***************************************************************************

Crash traceback:

---------------------------------------------------------------------------
AttributeError       Python 3.2.2: /home/yagnesh/local/python/bin/python3.2
                                                   Thu Nov  3 00:55:58 2011
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.
/home/yagnesh/local/python/bin/ipython3 in <module>()
      1 #!/home/yagnesh/local/python/bin/python3.2
      2 # EASY-INSTALL-ENTRY-SCRIPT: 'ipython==0.12.dev','console_scripts','ipython3'
      3 __requires__ = 'ipython==0.12.dev'
      4 import sys
      5 from pkg_resources import load_entry_point
      6 
      7 if __name__ == '__main__':
      8     sys.exit(
----> 9         load_entry_point('ipython==0.12.dev', 'console_scripts', 'ipython3')()
        global load_entry_point = <function load_entry_point at 0xc8c628>
     10     )

/home/yagnesh/local/python/lib/python3.2/site-packages/ipython-0.12.dev-py3.2.egg/IPython/frontend/terminal/ipapp.py in launch_new_instance()
    377         ipython_dir = get_ipython_dir()
    378     profile_dir = os.path.join(ipython_dir, 'profile_default')
    379     cl = PyFileConfigLoader(default_config_file_name, profile_dir)
    380     try:
    381         config = cl.load_config()
    382     except ConfigFileNotFound:
    383         # no config found
    384         config = Config()
    385     return config
    386 
    387 
    388 def launch_new_instance():
    389     """Create and run a full blown IPython instance"""
    390     app = TerminalIPythonApp.instance()
    391     app.initialize()
--> 392     app.start()
        app.start = <bound method TerminalIPythonApp.start of <IPython.frontend.terminal.ipapp.TerminalIPythonApp object at 0x123d390>>
    393 
    394 
    395 if __name__ == '__main__':
    396     launch_new_instance()

/home/yagnesh/local/python/lib/python3.2/site-packages/ipython-0.12.dev-py3.2.egg/IPython/frontend/terminal/ipapp.py in start(self=<IPython.frontend.terminal.ipapp.TerminalIPythonApp object>)
    351                               "toolkit=%s, pylab=%s" % (gui, self.pylab) )
    352                 if self.pylab:
    353                     activate(gui, import_all=self.pylab_import_all)
    354                 else:
    355                     activate(gui)
    356             except:
    357                 self.log.warn("Error in enabling GUI event loop integration:")
    358                 self.shell.showtraceback()
    359 
    360     def start(self):
    361         if self.subapp is not None:
    362             return self.subapp.start()
    363         # perform any prexec steps:
    364         if self.interact:
    365             self.log.debug("Starting IPython's mainloop...")
--> 366             self.shell.mainloop()
        self.shell.mainloop = <bound method TerminalInteractiveShell.mainloop of <IPython.frontend.terminal.interactiveshell.TerminalInteractiveShell object at 0x7f414bc39c50>>
    367         else:
    368             self.log.debug("IPython not interactive...")
    369 
    370 
    371 def load_default_config(ipython_dir=None):
    372     """Load the default config file from the default ipython_dir.
    373 
    374     This is useful for embedded shells.
    375     """
    376     if ipython_dir is None:
    377         ipython_dir = get_ipython_dir()
    378     profile_dir = os.path.join(ipython_dir, 'profile_default')
    379     cl = PyFileConfigLoader(default_config_file_name, profile_dir)
    380     try:
    381         config = cl.load_config()

/home/yagnesh/local/python/lib/python3.2/site-packages/ipython-0.12.dev-py3.2.egg/IPython/frontend/terminal/interactiveshell.py in mainloop(self=<IPython.frontend.terminal.interactiveshell.TerminalInteractiveShell object>, display_banner=None)
    215         internally created default banner.
    216         """
    217 
    218         with nested(self.builtin_trap, self.display_trap):
    219 
    220             while 1:
    221                 try:
    222                     self.interact(display_banner=display_banner)
    223                     #self.interact_with_readline()
    224                     # XXX for testing of a readline-decoupled repl loop, call
    225                     # interact_with_readline above
    226                     break
    227                 except KeyboardInterrupt:
    228                     # this should not be necessary, but KeyboardInterrupt
    229                     # handling seems rather unpredictable...
--> 230                     self.write("\nKeyboardInterrupt in interact()\n")
        self.write = <bound method TerminalInteractiveShell.write of <IPython.frontend.terminal.interactiveshell.TerminalInteractiveShell object at 0x7f414bc39c50>>
    231 
    232     def _replace_rlhist_multiline(self, source_raw, hlen_before_cell):
    233         """Store multiple lines as a single entry in history"""
    234         if self.multiline_history and self.has_readline:
    235             hlen = self.readline.get_current_history_length()
    236             for i in range(hlen - hlen_before_cell):
    237                 self.readline.remove_history_item(hlen - i - 1)
    238             stdin_encoding = sys.stdin.encoding or "utf-8"
    239             self.readline.add_history(py3compat.unicode_to_str(source_raw.rstrip(),
    240                                         stdin_encoding))
    241 
    242     def interact(self, display_banner=None):
    243         """Closely emulate the interactive Python console."""
    244 
    245         # batch run -> do not interact

/home/yagnesh/local/python/lib/python3.2/contextlib.py in __exit__(self=<contextlib._GeneratorContextManager object>, type=<class 'AttributeError'>, value=AttributeError("'NoneType' object has no attribute 'get_current_history_length'",), traceback=<traceback object>)
     51 
     52     def __exit__(self, type, value, traceback):
     53         if type is None:
     54             try:
     55                 next(self.gen)
     56             except StopIteration:
     57                 return
     58             else:
     59                 raise RuntimeError("generator didn't stop")
     60         else:
     61             if value is None:
     62                 # Need to force instantiation so we can reliably
     63                 # tell if we get the same exception back
     64                 value = type()
     65             try:
---> 66                 self.gen.throw(type, value, traceback)
        self.gen.throw = <built-in method throw of generator object at 0x16c3190>
        type = <class 'AttributeError'>
        value = AttributeError("'NoneType' object has no attribute 'get_current_history_length'",)
        traceback = <traceback object at 0x16c8710>
     67                 raise RuntimeError("generator didn't stop after throw()")
     68             except StopIteration as exc:
     69                 # Suppress the exception *unless* it's the same exception that
     70                 # was passed to throw().  This prevents a StopIteration
     71                 # raised inside the "with" statement from being suppressed
     72                 return exc is not value
     73             except:
     74                 # only re-raise if it's *not* the exception that was
     75                 # passed to throw(), because __exit__() must not raise
     76                 # an exception unless __exit__() itself failed.  But throw()
     77                 # has to raise the exception to signal propagation, so this
     78                 # fixes the impedance mismatch between the throw() protocol
     79                 # and the __exit__() protocol.
     80                 #
     81                 if sys.exc_info()[1] is not value:

/home/yagnesh/local/python/lib/python3.2/site-packages/ipython-0.12.dev-py3.2.egg/IPython/utils/nested_context.py in nested(*managers=(<IPython.core.builtin_trap.BuiltinTrap object>, <IPython.core.display_trap.DisplayTrap object>))
     35         yield vars
     36     except:
     37         exc = sys.exc_info()
     38     finally:
     39         while exits:
     40             exit = exits.pop()
     41             try:
     42                 if exit(*exc):
     43                     exc = (None, None, None)
     44             except:
     45                 exc = sys.exc_info()
     46         if exc != (None, None, None):
     47             # Don't rely on sys.exc_info() still containing
     48             # the right information. Another exception may
     49             # have been raised and caught by an exit method
---> 50             raise exc[0](exc[1]).with_traceback(exc[2])
        exc = (<class 'AttributeError'>, AttributeError("'NoneType' object has no attribute 'get_current_history_length'",), <traceback object at 0x17f67a0>)
        exc.with_traceback = undefined

/home/yagnesh/local/python/lib/python3.2/site-packages/ipython-0.12.dev-py3.2.egg/IPython/utils/nested_context.py in nested(*managers=(<IPython.core.builtin_trap.BuiltinTrap object>, <IPython.core.display_trap.DisplayTrap object>))
     20    used with a variable number of context managers as follows:
     21 
     22       with nested(*managers):
     23           do_something()
     24 
     25     """
     26     exits = []
     27     vars = []
     28     exc = (None, None, None)
     29     try:
     30         for mgr in managers:
     31             exit = mgr.__exit__
     32             enter = mgr.__enter__
     33             vars.append(enter())
     34             exits.append(exit)
---> 35         yield vars
        vars = [<IPython.core.builtin_trap.BuiltinTrap object at 0x16b6210>, <IPython.core.display_trap.DisplayTrap object at 0x16c53d0>]
     36     except:
     37         exc = sys.exc_info()
     38     finally:
     39         while exits:
     40             exit = exits.pop()
     41             try:
     42                 if exit(*exc):
     43                     exc = (None, None, None)
     44             except:
     45                 exc = sys.exc_info()
     46         if exc != (None, None, None):
     47             # Don't rely on sys.exc_info() still containing
     48             # the right information. Another exception may
     49             # have been raised and caught by an exit method
     50             raise exc[0](exc[1]).with_traceback(exc[2])

/home/yagnesh/local/python/lib/python3.2/site-packages/ipython-0.12.dev-py3.2.egg/IPython/frontend/terminal/interactiveshell.py in mainloop(self=<IPython.frontend.terminal.interactiveshell.TerminalInteractiveShell object>, display_banner=None)
    207     #-------------------------------------------------------------------------
    208     # Mainloop and code execution logic
    209     #-------------------------------------------------------------------------
    210 
    211     def mainloop(self, display_banner=None):
    212         """Start the mainloop.
    213 
    214         If an optional banner argument is given, it will override the
    215         internally created default banner.
    216         """
    217 
    218         with nested(self.builtin_trap, self.display_trap):
    219 
    220             while 1:
    221                 try:
--> 222                     self.interact(display_banner=display_banner)
        self.interact = <bound method TerminalInteractiveShell.interact of <IPython.frontend.terminal.interactiveshell.TerminalInteractiveShell object at 0x7f414bc39c50>>
        display_banner = None
    223                     #self.interact_with_readline()
    224                     # XXX for testing of a readline-decoupled repl loop, call
    225                     # interact_with_readline above
    226                     break
    227                 except KeyboardInterrupt:
    228                     # this should not be necessary, but KeyboardInterrupt
    229                     # handling seems rather unpredictable...
    230                     self.write("\nKeyboardInterrupt in interact()\n")
    231 
    232     def _replace_rlhist_multiline(self, source_raw, hlen_before_cell):
    233         """Store multiple lines as a single entry in history"""
    234         if self.multiline_history and self.has_readline:
    235             hlen = self.readline.get_current_history_length()
    236             for i in range(hlen - hlen_before_cell):
    237                 self.readline.remove_history_item(hlen - i - 1)

/home/yagnesh/local/python/lib/python3.2/site-packages/ipython-0.12.dev-py3.2.egg/IPython/frontend/terminal/interactiveshell.py in interact(self=<IPython.frontend.terminal.interactiveshell.TerminalInteractiveShell object>, display_banner=False)
    243         """Closely emulate the interactive Python console."""
    244 
    245         # batch run -> do not interact
    246         if self.exit_now:
    247             return
    248 
    249         if display_banner is None:
    250             display_banner = self.display_banner
    251 
    252         if isinstance(display_banner, str):
    253             self.show_banner(display_banner)
    254         elif display_banner:
    255             self.show_banner()
    256 
    257         more = False
--> 258         hlen_before_cell = self.readline.get_current_history_length()
        hlen_before_cell = undefined
        self.readline.get_current_history_length = undefined
    259 
    260         # Mark activity in the builtins
    261         builtins.__dict__['__IPYTHON__active'] += 1
    262 
    263         if self.has_readline:
    264             self.readline_startup_hook(self.pre_readline)
    265         # exit_now is set by a call to %Exit or %Quit, through the
    266         # ask_exit callback.
    267 
    268         while not self.exit_now:
    269             self.hooks.pre_prompt_hook()
    270             if more:
    271                 try:
    272                     prompt = self.hooks.generate_prompt(True)
    273                 except:

AttributeError: 'NoneType' object has no attribute 'get_current_history_length'

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History of session input:
*** Last line of input (may not be in above history):

[minrk]

Duplicate of #911, and should be fixed when we merge #929

[yyr]

my bad , I should have gone through the issues. Sorry for the trouble and thank you for the fix. keep up the good job.

[minrk]

no worries. If you check out the branch in #929 and it still doesn't work, do let us know there.

[yyr]

for the record; pulling #929 from Julian did fix the issue. Thanks agiain minrk for the quick response.