PR: Patch ipykernel to avoid errors when setting the Qt5 Matplotlib backend

[ccordoba12]

Fixes #6091.

[pep8speaks]

Hello @ccordoba12! Thanks for updating the PR.

• In the file spyder/utils/site/sitecustomize.py, following are the PEP8 issues :

Line 270:1: E402 module level import not at top of file
Line 271:1: E402 module level import not at top of file
Line 273:5: E129 visually indented line with same indent as next logical line

Comment last updated on January 03, 2018 at 22:16 Hours UTC

[stonebig]

shouldn't it be written more safely for the future ?

# f ipykernel.__version__ <= '4.7.0':
from distutils.version import LooseVersion
if LooseVersion(ipykernel.__version__) <= LooseVersion('4.7.0') and LooseVersion(IPython.__version__) >= LooseVersion('5.5.0'):

[ccordoba12]

shouldn't it be written more safely for the future ?

Done.