spyder cannot connect to ipython kernel

[peeter001]

Hello

On my system (DragonFlyBSD), spyder (2.3.7) cannot connect to the ipython kernel in order to start the ipython console. When spyder starts up, spyder's ipython console displays the message "Connecting to kernel. . ." and that's all: it will loop there forever. When quitting spyder, this error shows: 

---

Exception in thread Thread-2:

Traceback (most recent call last):

  File "/usr/local/lib/python2.7/threading.py", line 801, in __bootstrap_inner

    self.run()

  File "/usr/local/lib/python2.7/threading.py", line 754, in run

    self.__target(*self.__args, **self.__kwargs)

  File "/usr/local/lib/python2.7/site-packages/spyderlib/spyder.py",

line 2093, in start_open_files_server

    req, dummy = self.open_files_server.accept()

  File "/usr/local/lib/python2.7/socket.py", line 206, in accept

    sock, addr = self._sock.accept()

  File "/usr/local/lib/python2.7/socket.py", line 174, in _dummy

    raise error(EBADF, 'Bad file descriptor')

error: [Errno 9] Bad file descriptor

[1]    Done                          spyder

---

ipython alone runs fine on DragonFly (e.g. when started with 'ipython notebook').

I ran python2.7 unit tests that have 'thread' in their name, i.e.

% ls -l /usr/local/lib/python2.7/test | grep thread

% python -m test.regrtest test_threading

etc

and they all pass. The test_socket also passes when DragonFly is added to the conditional that checks the platform. The test_socketserver is skipped. 

I wonder if anybody has ideas about where to dig further or what tests could I run to find the error? 

Thanks, 

Peeter

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[Jitse Niesen]

Hello,

Is it possible to upgrade Spyder to 3.0 on DragonFlyBSD? Having no experience with BSD I have no idea how difficult this is. The part of the Spyder code for connecting to ipython has changed a lot between 2.3 and 3.0.

Jitse

[peeter001]

Hello

Tried to upgrade to spyder 3.0 with pip but got stuck with psutil --- seems psutil does not support DragonFly out of box. I suppose I'd first need to get psutil working on DragonFly. . .

(I checked with FreeBSD too; DragonFly follows FreeBSD applications very closely. On FreeBSD, spyder 2.3 and 3.0 run fine.) 

Thanks

Peeter

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[Jitse Niesen]

psutil is only used to display CPU and memory usage in the status bar. If getting psutil to work is not so easy, it may be easier in the short term to patch Spyder so that it does not display memory usage and runs without psutil.

Jitse

[Carlos Córdoba]

Hi,

We're going to use psutil to do other things, for example to better detect previous instances of Spyder:

    https://github.com/spyder-ide/spyder/pull/3659

So it's better to ask the psutil maintainer to support DragonFly BSD :-)


Cheers,
Carlos

El 18/11/16 a las 05:32, Jitse Niesen escribió:

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[peeter001]

Hello

Thank you all --- agreed that in the long run it'd be good to have DragonFly support in psutil. It'll probably take a little time. 

However, if the ipython problem persists I'll be back with more. 

Thanks again

Peeter

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