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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 load_config_vars(target_config, source_config):
 """Loads all attributes from source config into target config @type target_config: TestRunConfigManager @param target_config: Config to dump variables into @type source_config: TestRunConfigManager @param source_config: The other config @return: True """

    # Overwrite all attributes in config with new config
    for attr in dir(source_config):
        # skip all private class attrs
        if attr.startswith('_'):
            continue
        val = getattr(source_config, attr)
        if val is not None:
            setattr(target_config, attr, val)