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gh-99991: improve docs on str.encode and bytes.decode (#100198)
Co-authored-by: C.A.M. Gerlach <CAM.Gerlach@Gerlach.CAM>
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@ -1624,25 +1624,28 @@ expression support in the :mod:`re` module).
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.. method:: str.encode(encoding="utf-8", errors="strict")
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Return an encoded version of the string as a bytes object. Default encoding
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is ``'utf-8'``. *errors* may be given to set a different error handling scheme.
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The default for *errors* is ``'strict'``, meaning that encoding errors raise
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a :exc:`UnicodeError`. Other possible
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values are ``'ignore'``, ``'replace'``, ``'xmlcharrefreplace'``,
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``'backslashreplace'`` and any other name registered via
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:func:`codecs.register_error`, see section :ref:`error-handlers`. For a
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list of possible encodings, see section :ref:`standard-encodings`.
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Return the string encoded to :class:`bytes`.
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By default, the *errors* argument is not checked for best performances, but
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only used at the first encoding error. Enable the :ref:`Python Development
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Mode <devmode>`, or use a :ref:`debug build <debug-build>` to check
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*errors*.
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*encoding* defaults to ``'utf-8'``;
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see :ref:`standard-encodings` for possible values.
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*errors* controls how encoding errors are handled.
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If ``'strict'`` (the default), a :exc:`UnicodeError` exception is raised.
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Other possible values are ``'ignore'``,
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``'replace'``, ``'xmlcharrefreplace'``, ``'backslashreplace'`` and any
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other name registered via :func:`codecs.register_error`.
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See :ref:`error-handlers` for details.
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For performance reasons, the value of *errors* is not checked for validity
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unless an encoding error actually occurs,
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:ref:`devmode` is enabled
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or a :ref:`debug build <debug-build>` is used.
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.. versionchanged:: 3.1
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Support for keyword arguments added.
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Added support for keyword arguments.
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.. versionchanged:: 3.9
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The *errors* is now checked in development mode and
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The value of the *errors* argument is now checked in :ref:`devmode` and
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in :ref:`debug mode <debug-build>`.
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@ -2759,29 +2762,32 @@ arbitrary binary data.
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.. method:: bytes.decode(encoding="utf-8", errors="strict")
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bytearray.decode(encoding="utf-8", errors="strict")
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Return a string decoded from the given bytes. Default encoding is
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``'utf-8'``. *errors* may be given to set a different
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error handling scheme. The default for *errors* is ``'strict'``, meaning
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that encoding errors raise a :exc:`UnicodeError`. Other possible values are
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``'ignore'``, ``'replace'`` and any other name registered via
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:func:`codecs.register_error`, see section :ref:`error-handlers`. For a
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list of possible encodings, see section :ref:`standard-encodings`.
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Return the bytes decoded to a :class:`str`.
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By default, the *errors* argument is not checked for best performances, but
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only used at the first decoding error. Enable the :ref:`Python Development
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Mode <devmode>`, or use a :ref:`debug build <debug-build>` to check *errors*.
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*encoding* defaults to ``'utf-8'``;
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see :ref:`standard-encodings` for possible values.
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*errors* controls how decoding errors are handled.
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If ``'strict'`` (the default), a :exc:`UnicodeError` exception is raised.
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Other possible values are ``'ignore'``, ``'replace'``,
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and any other name registered via :func:`codecs.register_error`.
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See :ref:`error-handlers` for details.
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For performance reasons, the value of *errors* is not checked for validity
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unless a decoding error actually occurs,
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:ref:`devmode` is enabled or a :ref:`debug build <debug-build>` is used.
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.. note::
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Passing the *encoding* argument to :class:`str` allows decoding any
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:term:`bytes-like object` directly, without needing to make a temporary
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bytes or bytearray object.
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:class:`!bytes` or :class:`!bytearray` object.
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.. versionchanged:: 3.1
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Added support for keyword arguments.
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.. versionchanged:: 3.9
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The *errors* is now checked in development mode and
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The value of the *errors* argument is now checked in :ref:`devmode` and
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in :ref:`debug mode <debug-build>`.
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