Fix issue295

[flothesof]

Fixes #295.

[pep8speaks]

Hello @flothesof! Thanks for updating this PR. We checked the lines you've touched for PEP 8 issues, and found:

There are currently no PEP 8 issues detected in this Pull Request. Cheers! 🍻

Comment last updated at 2019-11-27 16:50:59 UTC

[codecov-io]

Codecov Report

Merging #296 into devel will decrease coverage by 0.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##            devel     #296      +/-   ##
==========================================
- Coverage   41.05%   41.04%   -0.02%     
==========================================
  Files          79       79              
  Lines       23468    23464       -4     
==========================================
- Hits         9634     9630       -4     
  Misses      13834    13834

Impacted Files	Coverage Δ
tofu/tests/tests09_tutorials/tests01_runall.py	64.04% <100%> (-1.55%)	⬇️

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[Didou09]

• Please correct the path _TFROOT (not equivalent to the original)
• Other changes are related to my review of PR #294 (i.e.: not sure moving updateversion in setup.py is a good idea)

[flothesof]

I cleaned the history of this PR to just fix the unit test.