Restore Python 3.5 compatibility #patch

[fabricepipart]

No description provided.

[codecov-io]

Codecov Report

Merging #168 into master will not change coverage.
The diff coverage is 100%.

@@           Coverage Diff           @@
##           master     #168   +/-   ##
=======================================
  Coverage   87.03%   87.03%           
=======================================
  Files          89       89           
  Lines        2576     2576           
  Branches      205      205           
=======================================
  Hits         2242     2242           
  Misses        261      261           
  Partials       73       73

Flag	Coverage Δ
#javaserver	88.63% <ø> (ø)	⬆️
#pythonclient	82.02% <100%> (ø)	⬆️

Impacted Files	Coverage Δ
src/main/client/logs/init.py	97.36% <100%> (ø)	⬆️

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