update peek documentation to implementation
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@ -504,11 +504,9 @@ Buffered Streams
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.. method:: peek([n])
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Return 1 (or *n* if specified) bytes from a buffer without advancing the
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position. Only a single read on the raw stream is done to satisfy the
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call. The number of bytes returned may be less than requested since at
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most all the buffer's bytes from the current position to the end are
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returned.
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Return bytes from the stream without advancing the position. Only a
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single read on the raw stream is done to satisfy the call. The number of
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bytes returned may be less or more than requested.
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.. method:: read([n])
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