which branch to use

[sekkit]

develop vs python3.7, they have different commits.
which one to choose?

[wiggin15]

Hi. The branch python3.7 doesn't include support for Windows yet, so it is still not merged.
My suggestion is to use the latest tag, v3.5.1.8, or the develop branch, unless you specifically need a version greater than 3.5 for Unix/Linux.