[Python-3000] New io system and binary data (original) (raw)

Terry Reedy tjreedy at udel.edu
Thu Sep 20 03:24:04 CEST 2007

"Guido van Rossum" <guido at python.org> wrote in message news:ca471dc20709191019k2f5e16e5j75767b25ddf90e30 at mail.gmail.com... | Changing the mode between text and binary is not feasible (since it | would have to change the class). But it is perfectly acceptable to use | sys.std{in,out}.buffer if you need to write a binary transparent | filter.

In PEP 3116, the Buffered I/O section has Additionally, the abstract base class provides one member variable: .raw A reference to the underlying RawIOBase object.

The Text I/O section does not have, but I presume should, similar lines about member variable .buffer.

Perhaps a note could be added that stdin/out will be Text I/O and that the bytes buffer is easily unwrapped via .buffer (and even via .raw).

While I sympathize with the initial surprise, I am willing to type .buffer should I need to. The real problem is that 2to3.py cannot do so automatically (and be always. and probably not even usually, correct).

tjr

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