def get_version(version=None):
    if version is None:
        from hbmqtt import VERSION as version
    else:
        assert len(version) == 5
        assert version[3] in ('alpha', 'beta', 'rc', 'final')

    # Now build the two parts of the version number:
    # main = X.Y[.Z]
    # sub = .devN - for pre-alpha releases
    # | {a|b|c}N - for alpha, beta and rc releases

    parts = 2 if version[2] == 0 else 3
    main = '.'.join(str(x) for x in version[:parts])

    sub = ''
    if version[3] == 'alpha' and version[4] == 0:
        git_changeset = get_git_changeset()
        if git_changeset:
            sub = '.dev%s' % git_changeset

    elif version[3] != 'final':
        mapping = {'alpha': 'a', 'beta': 'b', 'rc': 'c'}
        sub = mapping[version[3]] + str(version[4])

    return str(main + sub)
Equivalent to ``self.build_groups()`` except for the GROUP BY
dataset/ETHPy150Open beerfactory/hbmqtt/hbmqtt/version.py/get_version--crossover with--dataset/ETHPy150Open ambitioninc/django-query-builder/querybuilder/query.py/QueryWindow.build_partition_by_fields