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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 render_view(view_name, **args):
    '''Process view and return root Node'''
    try:
        root_xml = get_view_root(view_name)
        return render(root_xml, **args)
    except CoreError as error:
        error.add_view_info(ViewInfo(view_name, None))
        raise
    except:
        info = exc_info()
        error = ViewError('Unknown error occured during rendering', ViewInfo(view_name, None))
        error.add_cause(info[1])
        raise error from info[1]