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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 utils(opts, whitelist=None, context=None, proxy=proxy):
    '''
    Returns the utility modules
    '''
    return LazyLoader(
        _module_dirs(opts, 'utils', ext_type_dirs='utils_dirs'),
        opts,
        tag='utils',
        whitelist=whitelist,
        pack={'__context__': context, '__proxy__': proxy or {}},
    )