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zTextIOWrapper.tellc C s$ | |d kr| }| j|S )N)r[ rX r> rY )rD rV r? r? r@ rY A s zTextIOWrapper.truncatec C s* | j d krtd| | j}d | _|S )Nzbuffer is already detached)r> r! r[ r )rD r> r? r? r@ r G s
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