How to use the ai2thor._version.__version__ function in ai2thor

def release(ctx):
    x = subprocess.check_output("git status --porcelain", shell=True).decode("ASCII")
    for line in x.split("\n"):
        if line.strip().startswith("??") or len(line.strip()) == 0:
            continue
        raise Exception(
            "Found locally modified changes from 'git status' - please commit and push or revert"
        )

    import ai2thor._version

    tag = "v" + ai2thor._version.__version__
    subprocess.check_call('git tag -a %s -m "release  %s"' % (tag, tag), shell=True)
    subprocess.check_call("git push origin master --tags", shell=True)
    subprocess.check_call(
        "twine upload -u ai2thor dist/ai2thor-{ver}-* dist/ai2thor-{ver}.*".format(
            ver=ai2thor._version.__version__
        ),
        shell=True,
    )

x = subprocess.check_output("git status --porcelain", shell=True).decode("ASCII")
    for line in x.split("\n"):
        if line.strip().startswith("??") or len(line.strip()) == 0:
            continue
        raise Exception(
            "Found locally modified changes from 'git status' - please commit and push or revert"
        )

    import ai2thor._version

    tag = "v" + ai2thor._version.__version__
    subprocess.check_call('git tag -a %s -m "release  %s"' % (tag, tag), shell=True)
    subprocess.check_call("git push origin master --tags", shell=True)
    subprocess.check_call(
        "twine upload -u ai2thor dist/ai2thor-{ver}-* dist/ai2thor-{ver}.*".format(
            ver=ai2thor._version.__version__
        ),
        shell=True,
    )