84 lines
2.0 KiB
Plaintext
84 lines
2.0 KiB
Plaintext
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PEP: 332
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Title: Byte vectors and String/Unicode Unification
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Version: $Revision$
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Last-Modified: $Date$
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Author: Skip Montanaro <skip@pobox.com>
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Status: Draft
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Type: Standards Track
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Content-Type: text/x-rst
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Created: 11-Aug-2004
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Python-Version: 2.5
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Post-History:
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Abstract
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========
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This PEP outlines the introduction of a raw ``bytes`` sequence object
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and the unification of the current ``str`` and ``unicode`` objects.
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Rationale
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=========
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Python's current string objects are overloaded. They serve both to
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hold ASCII and non-ASCII character data and to also hold sequences of
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raw bytes which have no reasonable interpretation as displayable
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character sequences. This overlap hasn't been a big problem in the
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past, but as Python moves closer to requiring source code to be
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properly encoded, the use of strings to represent raw byte sequences
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will be more problematic. In addition, as Python's Unicode support
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has improved, it's easier to consider strings as ASCII-encoded Unicode
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objects.
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Proposed Implementation
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=======================
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The number in parentheses indicates the Python version in which the
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feature will be introduced.
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- Add a ``bytes`` builtin which is just a synonym for ``str``. (2.5)
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- Add a ``b"..."`` string literal which is equivalent to raw string
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literals, with the exception that values which conflict with the
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source encoding of the containing file not generate warnings. (2.5)
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- Warn about the use of variables named "bytes". (2.5 or 2.6)
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- Introduce a ``bytes`` builtin which refers to a sequence distinct
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from the ``str`` type. (2.6)
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- Make ``str`` a synonym for ``unicode``. (3.0)
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Bytes Object API
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================
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TBD.
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Issues
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======
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- Can this be accomplished before Python 3.0?
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- Should ``bytes`` objects be mutable or immutable? (Guido seems to
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like them to be mutable.)
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Copyright
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=========
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This document has been placed in the public domain.
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..
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Local Variables:
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mode: indented-text
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indent-tabs-mode: nil
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sentence-end-double-space: t
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fill-column: 70
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End:
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