__version_info__ = {
    'major': 2,
    'minor': 0,
    'micro': 19,
    'releaselevel': 'beta',
    'serial': 1
}

def get_version(short=False):
    assert __version_info__['releaselevel'] in ('alpha', 'beta', 'final')
    vers = ["%(major)i.%(minor)i" % __version_info__, ]
    if __version_info__['micro']:
        vers.append(".%(micro)i" % __version_info__)
    if __version_info__['releaselevel'] != 'final' and not short:
        vers.append('%s%i' % (__version_info__['releaselevel'][0], __version_info__['serial']))
    return ''.join(vers)

__version__ = get_version()

__version_info__ = {
    'major': 2,
    'minor': 1,
    'micro': 0,
    'releaselevel': 'beta',
    'serial': 1
}

def get_version(short=False):
    assert __version_info__['releaselevel'] in ('alpha', 'beta', 'final')
    vers = ["%(major)i.%(minor)i" % __version_info__, ]
    if __version_info__['micro']:
        vers.append(".%(micro)i" % __version_info__)
    if __version_info__['releaselevel'] != 'final' and not short:
        vers.append('%s%i' % (__version_info__['releaselevel'][0], __version_info__['serial']))
    return ''.join(vers)

__version__ = get_version()

Update branch to version 2.1.0 beta