Automatic create release from master branch for python package.

release.sh

#!/bin/bash

# create release from master branch


# v1.0.0, v1.5.2, etc.
versionLabel=$(grep -i '^__version__ = ' setup.py | cut -d "'" -f2)


# establish branch and tag name variables
devBranch=development
stageBranch=stage
masterBranch=master
releaseBranch=releases/$versionLabel

echo "creating release branch $releaseBranch"

# create the release branch from the master branch
git checkout -b $releaseBranch $masterBranch

# merge release branch with the new version number back into stage
git checkout $stageBranch
git merge --no-ff $releaseBranch -m 'automated merge with release branch. [ci skip]'


# merge release branch with the new version number back into develop
git checkout $devBranch
git merge --no-ff $releaseBranch -m 'automated merge with release branch. [ci skip]'

# push all to origin
git push origin --all