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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 get_config_object():
 """Thread-safe accessor for the immutable default ConfigWrapper object"""

    global _DEFAULT_CONFIG_WRAPPER
    if _DEFAULT_CONFIG_WRAPPER is not None:
        return _DEFAULT_CONFIG_WRAPPER
    with _DEFAULT_CONFIG_WRAPPER_LOCK:
        if _DEFAULT_CONFIG_WRAPPER is not None:
            return _DEFAULT_CONFIG_WRAPPER
        _DEFAULT_CONFIG_WRAPPER = ConfigWrapper()
        return _DEFAULT_CONFIG_WRAPPER