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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def find_version( package_name: str, version_module_name: str = '_version', version_variable_name: str = 'VERSION') -> str: """Simulate behaviour of "from package_name._version import VERSION", and return VERSION."""

    version_module = importlib.import_module(
        '{}.{}'.format(package_name.replace('-', '_'), version_module_name))
    return getattr(version_module, version_variable_name)