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'r:xz' open for reading with lzma compression
'a' or 'a:' open for appending, creating the file if necessary
'w' or 'w:' open for writing without compression
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'w:bz2' open for writing with bzip2 compression
'w:xz' open for writing with lzma compression
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'r|*' open a stream of tar blocks with transparent compression
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znothing to open)rx �r:*c s � j | dkS )N�taropen)� OPEN_METH)r� �r r7 r8 �not_compressed< s z$TarFile.open.<locals>.not_compressed��keyNrx z%file could not be opened successfully�:r# r� r� �|rw zmode must be 'r' or 'w'Fr| zundiscernible mode)
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