Spyder: Unable to launch spyder after upgrading to 4.0.1

Created on 8 Jan 2020  路  17Comments  路  Source: spyder-ide/spyder

Issue Report Checklist

  • [x] Searched the issues page for similar reports
  • [x] Read the relevant sections of the Spyder Troubleshooting Guide and followed its advice
  • [x] Reproduced the issue after updating with conda update spyder (or pip, if not using Anaconda)
  • [x] Tried basic troubleshooting (if a bug/error)

    • [x] Restarted Spyder

    • [x] Reset preferences with spyder --reset

    • [ ] Reinstalled the latest version of Anaconda

    • [ ] Tried the other applicable steps from the Troubleshooting Guide

  • [x] Completed the Problem Description, Steps to Reproduce and Version sections below

Problem Description

After updating spyder, I was unable to launch it. I uninstalled it, installed spyder 3.3.6, 4.0.0, and 4.0.1. They all cause the same error message:

Traceback (most recent call last):
  File "/Users/colinww/anaconda3/bin/spyder", line 11, in <module>
    sys.exit(main())
  File "/Users/colinww/anaconda3/lib/python3.7/site-packages/spyder/app/start.py", line 201, in main
    from spyder.app import mainwindow
  File "/Users/colinww/anaconda3/lib/python3.7/site-packages/spyder/app/mainwindow.py", line 167, in <module>
    from spyder.utils.environ import WinUserEnvDialog
  File "/Users/colinww/anaconda3/lib/python3.7/site-packages/spyder/utils/environ.py", line 19, in <module>
    from spyder.plugins.variableexplorer.widgets.collectionseditor import (
  File "/Users/colinww/anaconda3/lib/python3.7/site-packages/spyder/plugins/variableexplorer/widgets/collectionseditor.py", line 29, in <module>
    from pympler.asizeof import asizeof
  File "/Users/colinww/anaconda3/lib/python3.7/site-packages/pympler/asizeof.py", line 1476, in <module>
    import numpy  # NumPy array, matrix, etc.
  File "/Users/colinww/anaconda3/lib/python3.7/site-packages/numpy/__init__.py", line 158, in <module>
    from . import core
  File "/Users/colinww/anaconda3/lib/python3.7/site-packages/numpy/core/__init__.py", line 100, in <module>
    from . import _internal
  File "/Users/colinww/anaconda3/lib/python3.7/site-packages/numpy/core/_internal.py", line 20, in <module>
    IS_PYPY = platform.python_implementation() == 'PyPy'
  File "/Users/colinww/anaconda3/lib/python3.7/platform.py", line 1267, in python_implementation
    return _sys_version()[0]
  File "/Users/colinww/anaconda3/lib/python3.7/platform.py", line 1228, in _sys_version
    repr(sys_version))
ValueError: failed to parse CPython sys.version: '3.7.0 (default, Jun 28 2018, 07:39:16) \n[Clang 4.0.1 (tags/RELEASE_401/final)]'

So I modified platform.py around line 1220 to report some more info:
``` else:
# CPython
match = _sys_version_parser.match(sys_version)
if match is None:
print("This is the executable: {}".format(sys.executable))
print("And this is the version: {}".format(sys.version))
raise ValueError(
'failed to parse CPython sys.version: %s' %
repr(sys_version))

And now this is the output I get:

...
This is the executable: /Users/colinww/anaconda3/bin/python
And this is the version: 3.7.0 (default, Jun 28 2018, 07:39:16)
[Clang 4.0.1 (tags/RELEASE_401/final)]
Traceback (most recent call last):
File "/Users/colinww/anaconda3/bin/spyder", line 11, in
sys.exit(main())
File "/Users/colinww/anaconda3/lib/python3.7/site-packages/spyder/app/start.py", line 201, in main
from spyder.app import mainwindow
...

Which is super weird, because if I launch that executable, I get:

colinww@ca-l-colin system-model % /Users/colinww/anaconda3/bin/python
Python 3.7.6 | packaged by conda-forge | (default, Jan 7 2020, 14:13:53)
[Clang 4.0.1 (tags/RELEASE_401/final)] :: Anaconda, Inc. on darwin
Type "help", "copyright", "credits" or "license" for more information.

import sys
sys.version
'3.7.6 | packaged by conda-forge | (default, Jan 7 2020, 14:13:53) \n[Clang 4.0.1 (tags/RELEASE_401/final)]'

This would be parsed correctly...

Anyway, long story short. I traced it back to the launcher in `/Users/colinww/anaconda3/bin/spyder`. The script is launched with: `#!/bin/bash /Users/colinww/anaconda3/bin/pythonw`.

When I run this, I get the same output which is causing crashing.

colinww@ca-l-colin system-model % /Users/colinww/anaconda3/bin/pythonw
Python 3.7.0 (default, Jun 28 2018, 07:39:16)
[Clang 4.0.1 (tags/RELEASE_401/final)] :: Anaconda, Inc. on darwin
```

So I changed the header line to read #!/Users/colinww/anaconda3/bin/python, and so far so good...

So is there something wrong with my system? This is a fairly clean install of 2019.10, all I added were a few packages always using conda.

Versions

  • Spyder version: 4.0.1
  • Python version: 3.7.6
  • Qt version: 5.9.7
  • PyQt version: 5.9.2
  • Operating System name/version: Darwin 15.2
Awaiting Followup
Source
picture colinww

Most helpful comment

Yes, for me running
conda update python
has fixed the problem.

picture fprabowo on 9 Jan 2020
👍3 🎉1

All 17 comments

By the way, this is the result of python.app:

colinww@ca-l-colin system-model % conda list python.app
# packages in environment at /Users/colinww/anaconda3:
#
# Name                    Version                   Build  Channel
python.app                2                        py37_9
colinww@ca-l-colin system-model % conda install python.app
Collecting package metadata (current_repodata.json): done
Solving environment: done

# All requested packages already installed.
colinww picture colinww on 8 Jan 2020

I met the same problem as you did

minientertainment picture minientertainment on 8 Jan 2020

I also just had this problem with my Mac after conda updating few hours ago, but not when I updated conda in my Windows PC

fprabowo picture fprabowo on 8 Jan 2020

I just ran into the a very similar problem on my Mac after a conda update.

This is from a clean environment only installing python=3.7 and spyder.

  File ".../anaconda3/envs/test_spyder/lib/python3.7/site-packages/spyder/app/mainwindow.py", line 3718, in main
    mainwindow = run_spyder(app, options, args)
  File ".../anaconda3/envs/test_spyder/lib/python3.7/site-packages/spyder/app/mainwindow.py", line 3559, in run_spyder
    main.setup()
  File ".../anaconda3/envs/test_spyder/lib/python3.7/site-packages/spyder/app/mainwindow.py", line 922, in setup
    from spyder.plugins.completion.plugin import CompletionManager
  File ".../anaconda3/envs/test_spyder/lib/python3.7/site-packages/spyder/plugins/completion/plugin.py", line 27, in <module>
    from spyder.plugins.completion.languageserver.plugin import (
  File ".../anaconda3/envs/test_spyder/lib/python3.7/site-packages/spyder/plugins/completion/languageserver/plugin.py", line 30, in <module>
    from spyder.plugins.completion.languageserver.client import LSPClient
  File ".../anaconda3/envs/test_spyder/lib/python3.7/site-packages/spyder/plugins/completion/languageserver/client.py", line 24, in <module>
    import zmq
  File ".../anaconda3/envs/test_spyder/lib/python3.7/site-packages/zmq/__init__.py", line 42, in <module>
    _load_libzmq()
  File ".../anaconda3/envs/test_spyder/lib/python3.7/site-packages/zmq/__init__.py", line 13, in _load_libzmq
    PYPY = platform.python_implementation().lower() == 'pypy'
  File ".../anaconda3/envs/test_spyder/lib/python3.7/platform.py", line 1265, in python_implementation
    return _sys_version()[0]
  File ".../anaconda3/envs/test_spyder/lib/python3.7/platform.py", line 1226, in _sys_version
    repr(sys_version))
ValueError: failed to parse CPython sys.version: '3.7.0 (default, Jun 28 2018, 07:39:16) \n[Clang 4.0.1 (tags/RELEASE_401/final)]'
HeikoSchuett picture HeikoSchuett on 8 Jan 2020

@jjhelmus, @mingwandroid, @msarahan, do you know what's happening here?

ccordoba12 picture ccordoba12 on 8 Jan 2020

After more poking, this seems to also be the root cause of seeing this error: #10984 Just somehow in the past, spyder was allowed to startup successfully.

colinww picture colinww on 8 Jan 2020

The python 3.7.6 build 1 packages in defaults accidentally have the conda-forge branding applied which I believe can cause this issue. Updating to the build 2 packages which are already available should fix this issue. Newly created environments should install this build of Python automatically.

I have no idea where the 3.7.0 (defaults, Jun 28 2018... string is coming from.

jjhelmus picture jjhelmus on 8 Jan 2020

For what is is worth, the 3.7.0 version is coming from the python binary in the python.app package.

jjhelmus picture jjhelmus on 9 Jan 2020

Thanks @jjhelmus for the clarification! That means that running

conda update python

should fix the problem.

People that posted on this issue, please confirm.

ccordoba12 picture ccordoba12 on 9 Jan 2020

Yes, for me running
conda update python
has fixed the problem.

fprabowo picture fprabowo on 9 Jan 2020
👍3 🎉1

Yes that fixes it for me too, thank you!

colinww picture colinww on 9 Jan 2020

Why is this not handled when I run conda update --all?

colinww picture colinww on 9 Jan 2020

for me everything is running again as well

HeikoSchuett picture HeikoSchuett on 9 Jan 2020

Ok, this is great news! Thanks a lot @jjhelmus for your help!

ccordoba12 picture ccordoba12 on 9 Jan 2020

Why is this not handled when I run conda update --all?

Any comments about this @jjhelmus?

ccordoba12 picture ccordoba12 on 9 Jan 2020

Thank you so much!

leoperereshz picture leoperereshz on 3 Mar 2020

In my case, I uninstalled Spyder 2 and run:

conda activate
spyder

RubensZimbres picture RubensZimbres on 21 Apr 2020
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