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z Maildir.addc C s t jt jj| j| j|��� dS )z=Remove the keyed message; raise KeyError if it doesn't exist.N)r r$ r r r �_lookup)r r# r r r r$ K s zMaildir.removec C s, y| j |� W n ttfk
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r8 wY nX |V qW dS )z Return an iterator over keys.N)�_refreshr� r� r& )r r# r r r r6 � s zMaildir.iterkeysc C s | j � || jkS )z9Return True if the keyed message exists, False otherwise.)r� r� )r r# r r r r? � s zMaildir.__contains__c C s | j � t| j�S )z*Return a count of messages in the mailbox.)r� �lenr� )r r r r r@ � s zMaildir.__len__c C s dS )z"Write any pending changes to disk.Nr )r r r r rI � s z
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