IPython 5 crashes kernels because of problems with Pygments

[samotracio]

Spyder does not seem to work well with ipython 5 and crashes when closing/opening consoles

What steps will reproduce the problem?

1. Run Spyder
2. Close the ipython console and try to open a new one (same behaviour if trying to open a second ipython console)

* What do you see ?*

An error ocurred while starting the kernel
Error in sitecustomize; set PYTHONVERBOSE for traceback:
AttributeError: module 'pkg_resources' has no attribute 'iter_entry_points'
Traceback (most recent call last):
File "/home/edonoso/anaconda3/envs/t5/lib/python3.5/site‑packages/spyderlib/widgets/externalshell/start_ipython_kernel.py", line 183, in 
from IPython.kernel.zmq.kernelapp import IPKernelApp
File "/home/edonoso/anaconda3/envs/t5/lib/python3.5/site‑packages/IPython/__init__.py", line 49, in 
from .terminal.embed import embed
File "/home/edonoso/anaconda3/envs/t5/lib/python3.5/site‑packages/IPython/terminal/embed.py", line 17, in 
from IPython.terminal.interactiveshell import TerminalInteractiveShell
File "/home/edonoso/anaconda3/envs/t5/lib/python3.5/site‑packages/IPython/terminal/interactiveshell.py", line 84, in 
class TerminalInteractiveShell(InteractiveShell):
File "/home/edonoso/anaconda3/envs/t5/lib/python3.5/site‑packages/IPython/terminal/interactiveshell.py", line 128, in TerminalInteractiveShell
help="The name of a Pygments style to use for syntax highlighting: \n %s" % ', '.join(get_all_styles())
File "/home/edonoso/anaconda3/envs/t5/lib/python3.5/site‑packages/pygments/styles/__init__.py", line 76, in get_all_styles
for name, _ in find_plugin_styles():
File "/home/edonoso/anaconda3/envs/t5/lib/python3.5/site‑packages/pygments/plugin.py", line 66, in find_plugin_styles
for entrypoint in pkg_resources.iter_entry_points(STYLE_ENTRY_POINT):
AttributeError: module 'pkg_resources' has no attribute 'iter_entry_points'

Please provide any additional information below
Only solution seems to restart spyder

Versions and main components

• Spyder Version: 2.3.9
• Python Version: 3.5.2
• Ipython Version: 5.0.0
• Anaconda Version : 4.1.1 - linux - 64bit
• Operating system: OpenSuse 13.1

Dependencies

IPython >=1.0 : 5.0.0 (OK)
jedi >=0.8.1;<0.9.0: 0.9.0 (NOK)
matplotlib >=1.0 : 1.5.1 (OK)
pandas >=0.13.1 : 0.18.1 (OK)
pep8 >=0.6 : 1.7.0 (OK)
psutil >=0.3 : 4.3.0 (OK)
pyflakes >=0.6.0 : 1.2.3 (OK)
pygments >=1.6 : 2.1.3 (OK)
pylint >=0.25 : None (NOK)
qtconsole >=4.0 : 4.2.1 (OK)
rope >=0.9.2 : 0.9.4-1 (OK)
sphinx >=0.6.6 : 1.4.1 (OK)
sympy >=0.7.3 : 1.0 (OK)
zmq >=2.1.11 : 15.2.0 (OK)

[ccordoba12]

I don't understand what this error has to do with Spyder. It seems a Pygments problem.

[ccordoba12]

@Carreau, have you seen this error before?

[Carreau]

I think I've seen it, try updating setuptools. IIRC it might affect only conda, so you might need to check whether you need to shadow conda setuptools with the pip one.

For me, conda most up to date setuptools is 23.0.0-py35_0, pip can get setuptools-24.1.0.

[samotracio]

Wish I could help more despite my limited knowledge. A plain ipython 5 shell runs without issue.
I can add the error appears in a fresh install of Anaconda 4.1.1 with Python 3.5. Of course, in 2.7 there are no problems.
Probably unrelated, I just found that the python console fired by Spyder also shows this error

[Carreau]

The other error is our fault, we need to release a 5.0.1 or 5.1 soon.
A release like that just take ~ a day to wrap up, and we need to be up to date on issue to be sure there is no other critical things to release.

I'll try to make that before end of week.

[ccordoba12]

Thanks @Carreau! I'll leave this open until 5.0.1 or 5.1 is released.

[samotracio]

Great! Thanks @Carreau and @ccordoba12
I don't dare to break setuptools yet :-)

[ccordoba12]

IPython 5.1 was released some days ago, so this should be fixed now :-)