Spyder: Console throws error about wurlitzer on fresh install

Created on 29 Jan 2019 · 17Comments · Source: spyder-ide/spyder

Can't get started anymore. This is the state of my Spyder console at startup. I have fresh-installed Python 3 from miniconda and Spyder 3. I'm on MacOS (latest). Any suggestions? Thanks!

Python 3.7.0 (default, Jun 28 2018, 07:39:16)myusername
Type "copyright", "credits" or "license" for more information.

IPython 7.2.0 -- An enhanced Interactive Python.
Error in callback <function sys_pipes_forever at 0x1215a3488> (for pre_execute):
Traceback (most recent call last):

  File "/Users/myusername/miniconda3/lib/python3.7/site-packages/wurlitzer.py", line 320, in sys_pipes_forever
    _mighty_wurlitzer.__enter__()

  File "/Users/myusername/miniconda3/lib/python3.7/contextlib.py", line 112, in __enter__
    return next(self.gen)

  File "/Users/myusername/miniconda3/lib/python3.7/site-packages/wurlitzer.py", line 290, in pipes
    with w:

  File "/Users/myusername/miniconda3/lib/python3.7/site-packages/wurlitzer.py", line 151, in __enter__
    pipe = self._setup_pipe('stdout')

  File "/Users/myusername/miniconda3/lib/python3.7/site-packages/wurlitzer.py", line 100, in _setup_pipe
    real_fd = getattr(sys, '__%s__' % name).fileno()

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


Error in callback <function sys_pipes_forever at 0x1215a3488> (for pre_execute):
Error in callback <function sys_pipes_forever at 0x1215a3488> (for pre_execute):


Traceback (most recent call last):

  File "/Users/myusername/miniconda3/lib/python3.7/site-packages/wurlitzer.py", line 320, in sys_pipes_forever
    _mighty_wurlitzer.__enter__()

  File "/Users/myusername/miniconda3/lib/python3.7/contextlib.py", line 112, in __enter__
    return next(self.gen)

  File "/Users/myusername/miniconda3/lib/python3.7/site-packages/wurlitzer.py", line 290, in pipes
    with w:

  File "/Users/myusername/miniconda3/lib/python3.7/site-packages/wurlitzer.py", line 151, in __enter__
    pipe = self._setup_pipe('stdout')

  File "/Users/myusername/miniconda3/lib/python3.7/site-packages/wurlitzer.py", line 100, in _setup_pipe
    real_fd = getattr(sys, '__%s__' % name).fileno()

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

Traceback (most recent call last):

  File "/Users/myusername/miniconda3/lib/python3.7/site-packages/wurlitzer.py", line 320, in sys_pipes_forever
    _mighty_wurlitzer.__enter__()

  File "/Users/myusername/miniconda3/lib/python3.7/contextlib.py", line 112, in __enter__
    return next(self.gen)

  File "/Users/myusername/miniconda3/lib/python3.7/site-packages/wurlitzer.py", line 290, in pipes
    with w:

  File "/Users/myusername/miniconda3/lib/python3.7/site-packages/wurlitzer.py", line 151, in __enter__
    pipe = self._setup_pipe('stdout')

  File "/Users/myusername/miniconda3/lib/python3.7/site-packages/wurlitzer.py", line 100, in _setup_pipe
    real_fd = getattr(sys, '__%s__' % name).fileno()

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

MacOS IPython Console Bug

Source

ptoche

Most helpful comment

Hello,
I am on a MacBook Pro, I installed everything though miniconda3 and opened Spyder after updating everything and I got following errors:

Python 3.7.3 (default, Mar 27 2019, 16:54:48)
Type "copyright", "credits" or "license" for more information.

IPython 7.5.0 -- An enhanced Interactive Python.
Error in callback <function sys_pipes_forever at 0x124160ae8> (for pre_execute):
Traceback (most recent call last):

  File "/miniconda3/lib/python3.7/site-packages/wurlitzer.py", line 320, in sys_pipes_forever
    _mighty_wurlitzer.__enter__()

  File "/miniconda3/lib/python3.7/contextlib.py", line 112, in __enter__
    return next(self.gen)

  File "/miniconda3/lib/python3.7/site-packages/wurlitzer.py", line 290, in pipes
    with w:

  File "/miniconda3/lib/python3.7/site-packages/wurlitzer.py", line 151, in __enter__
    pipe = self._setup_pipe('stdout')

  File "/miniconda3/lib/python3.7/site-packages/wurlitzer.py", line 100, in _setup_pipe
    real_fd = getattr(sys, '__%s__' % name).fileno()

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




Error in callback <function sys_pipes_forever at 0x124160ae8> (for pre_execute):
Error in callback <function sys_pipes_forever at 0x124160ae8> (for pre_execute):


Traceback (most recent call last):

  File "/miniconda3/lib/python3.7/site-packages/wurlitzer.py", line 320, in sys_pipes_forever
    _mighty_wurlitzer.__enter__()

  File "/miniconda3/lib/python3.7/contextlib.py", line 112, in __enter__
    return next(self.gen)

  File "/miniconda3/lib/python3.7/site-packages/wurlitzer.py", line 290, in pipes
    with w:

  File "/miniconda3/lib/python3.7/site-packages/wurlitzer.py", line 151, in __enter__
    pipe = self._setup_pipe('stdout')

  File "/miniconda3/lib/python3.7/site-packages/wurlitzer.py", line 100, in _setup_pipe
    real_fd = getattr(sys, '__%s__' % name).fileno()

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

Traceback (most recent call last):

  File "/miniconda3/lib/python3.7/site-packages/wurlitzer.py", line 320, in sys_pipes_forever
    _mighty_wurlitzer.__enter__()

  File "/miniconda3/lib/python3.7/contextlib.py", line 112, in __enter__
    return next(self.gen)

  File "/miniconda3/lib/python3.7/site-packages/wurlitzer.py", line 290, in pipes
    with w:

  File "/miniconda3/lib/python3.7/site-packages/wurlitzer.py", line 151, in __enter__
    pipe = self._setup_pipe('stdout')

  File "/miniconda3/lib/python3.7/site-packages/wurlitzer.py", line 100, in _setup_pipe
    real_fd = getattr(sys, '__%s__' % name).fileno()

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

macOS Mojave version 10.14.5 (18F132)

spyder                    3.3.4                    py37_0  
spyder-kernels            0.5.0                    py37_0  
wurlitzer                 1.0.2                    py37_0

SamD97 on 1 Jul 2019

👍5

All 17 comments

Thanks for reporting. We'll fix this in our next release (3.3.3) to be ready in a couple of days.

ccordoba12 on 29 Jan 2019

👍1

We have tests for this feature and they didn't detect your problem. So we relay on users to let us know about this kind of problems.

ccordoba12 on 2 Feb 2019

👍1

I am using Spyder 3.3.3 installed through conda along with Python 3 in Mac OS X 10.14.3. On opening Spyder, I get the following error messages in the console. Same error message appears every time a script is run, or interactive mode is used. The scripts work fine, but the error message is rather annoying!

Error message:
Python 3.6.7 | packaged by conda-forge | (default, Nov 20 2018, 18:37:09)
Type "copyright", "credits" or "license" for more information.

IPython 7.2.0 -- An enhanced Interactive Python.
Error in callback (for pre_execute):
Traceback (most recent call last):

File "/Users/Suman/anaconda/lib/python3.6/site-packages/wurlitzer.py", line 320, in sys_pipes_forever
_mighty_wurlitzer.__enter__()

File "/Users/Suman/anaconda/lib/python3.6/contextlib.py", line 81, in __enter__
return next(self.gen)

File "/Users/Suman/anaconda/lib/python3.6/site-packages/wurlitzer.py", line 290, in pipes
with w:

File "/Users/Suman/anaconda/lib/python3.6/site-packages/wurlitzer.py", line 151, in __enter__
pipe = self._setup_pipe('stdout')

File "/Users/Suman/anaconda/lib/python3.6/site-packages/wurlitzer.py", line 100, in _setup_pipe
real_fd = getattr(sys, '__%s__' % name).fileno()

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

namus on 14 Feb 2019

@namus, what's your spyder-kernels version?

ccordoba12 on 14 Feb 2019

@namus, what's your spyder-kernels version?

Name Version Build Channel
spyder 3.3.3 py36_0 conda-forge
spyder-kernels 0.4.2 py36_0 conda-forge
`

namus on 14 Feb 2019

Ok, that's different from the issue you're having. Please open a new issue about it here

https://github.com/spyder-ide/spyder-kernels/issues

ccordoba12 on 14 Feb 2019

Hello,
I am on a MacBook Pro, I installed everything though miniconda3 and opened Spyder after updating everything and I got following errors:

Python 3.7.3 (default, Mar 27 2019, 16:54:48)
Type "copyright", "credits" or "license" for more information.

IPython 7.5.0 -- An enhanced Interactive Python.
Error in callback <function sys_pipes_forever at 0x124160ae8> (for pre_execute):
Traceback (most recent call last):

  File "/miniconda3/lib/python3.7/site-packages/wurlitzer.py", line 320, in sys_pipes_forever
    _mighty_wurlitzer.__enter__()

  File "/miniconda3/lib/python3.7/contextlib.py", line 112, in __enter__
    return next(self.gen)

  File "/miniconda3/lib/python3.7/site-packages/wurlitzer.py", line 290, in pipes
    with w:

  File "/miniconda3/lib/python3.7/site-packages/wurlitzer.py", line 151, in __enter__
    pipe = self._setup_pipe('stdout')

  File "/miniconda3/lib/python3.7/site-packages/wurlitzer.py", line 100, in _setup_pipe
    real_fd = getattr(sys, '__%s__' % name).fileno()

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




Error in callback <function sys_pipes_forever at 0x124160ae8> (for pre_execute):
Error in callback <function sys_pipes_forever at 0x124160ae8> (for pre_execute):


Traceback (most recent call last):

  File "/miniconda3/lib/python3.7/site-packages/wurlitzer.py", line 320, in sys_pipes_forever
    _mighty_wurlitzer.__enter__()

  File "/miniconda3/lib/python3.7/contextlib.py", line 112, in __enter__
    return next(self.gen)

  File "/miniconda3/lib/python3.7/site-packages/wurlitzer.py", line 290, in pipes
    with w:

  File "/miniconda3/lib/python3.7/site-packages/wurlitzer.py", line 151, in __enter__
    pipe = self._setup_pipe('stdout')

  File "/miniconda3/lib/python3.7/site-packages/wurlitzer.py", line 100, in _setup_pipe
    real_fd = getattr(sys, '__%s__' % name).fileno()

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

Traceback (most recent call last):

  File "/miniconda3/lib/python3.7/site-packages/wurlitzer.py", line 320, in sys_pipes_forever
    _mighty_wurlitzer.__enter__()

  File "/miniconda3/lib/python3.7/contextlib.py", line 112, in __enter__
    return next(self.gen)

  File "/miniconda3/lib/python3.7/site-packages/wurlitzer.py", line 290, in pipes
    with w:

  File "/miniconda3/lib/python3.7/site-packages/wurlitzer.py", line 151, in __enter__
    pipe = self._setup_pipe('stdout')

  File "/miniconda3/lib/python3.7/site-packages/wurlitzer.py", line 100, in _setup_pipe
    real_fd = getattr(sys, '__%s__' % name).fileno()

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

macOS Mojave version 10.14.5 (18F132)

spyder                    3.3.4                    py37_0  
spyder-kernels            0.5.0                    py37_0  
wurlitzer                 1.0.2                    py37_0

SamD97 on 1 Jul 2019

👍5

I have the same with Spyder 4.

alexandrugris on 26 Dec 2019

👍2

same issues on Mac Catalina 10.15.2
Spyder version 3.3.6
Python 3.7.0

yvonneyang1 on 10 Jan 2020

It just suddenly came back. Latest MacOS/Python/Spyder.

Edit: Came and went. 👍

ptoche on 22 Jan 2020

I am facing the same problem with my mac. This stopped showing up. But this error is back now.

Edit: This was fixed (temporarily?) by running

conda update anaconda

vibhormehta on 12 Feb 2020

I met the same problem with fresh install of Spyder 4

linmiepii on 16 Feb 2020

I am facing the same problem with my mac. This stopped showing up. But this error is back now.

Edit: This was fixed (temporarily?) by running

conda update anaconda

Do you mean?

conda update conda
conda update -all

ptoche on 27 Apr 2020

Getting it again after a full update. MacOS Catalina 10.15.4. Spyder 4.1.2. Python 3.7.7 64-bit | Qt 5.9.6 | PyQt5 5.9.2 | Darwin 19.4.0

    Python 3.7.7 (default, Mar 26 2020, 10:32:53) 
    Type "copyright", "credits" or "license" for more information.

    IPython 7.13.0 -- An enhanced Interactive Python.

    Restarting kernel... 


     Error in callback <function sys_pipes_forever at 0x112a31050> (for pre_execute):


    Traceback (most recent call last):

      File "/Users/username/miniconda/lib/python3.7/site-packages/wurlitzer.py", line 339, in sys_pipes_forever
        _mighty_wurlitzer.__enter__()

      File "/Users/username/miniconda/lib/python3.7/contextlib.py", line 112, in __enter__
        return next(self.gen)

      File "/Users/username/miniconda/lib/python3.7/site-packages/wurlitzer.py", line 306, in pipes
        with w:

      File "/Users/username/miniconda/lib/python3.7/site-packages/wurlitzer.py", line 158, in __enter__
        pipe = self._setup_pipe('stdout')

      File "/Users/username/miniconda/lib/python3.7/site-packages/wurlitzer.py", line 107, in _setup_pipe
        real_fd = getattr(sys, '__%s__' % name).fileno()

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

ptoche on 27 Apr 2020

Seems to be solved with:

conda install -c conda-forge wurlitzer

ptoche on 27 Apr 2020

Yup, still an issue for me despite installing the latest wurlitzer (from conda-forge, as above).
Configuration:

Mac OS 10.15.4
Spyder 4.1.2
Python 3.7.7 (installed through miniconda)
Wurlitzer 2.0.0

Any solution welcome

CommonClimate on 28 Apr 2020

👀1

I have the same issue..

Mac OS 10.15.4
Spyder 3.3.6
Python 3.6.10
Wurlitzer 2.0.0

A strange phenomena that might make solving this much harder: After I close Spyder and reopen everything works well - but if I log out and log back in it comes back