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Issue #19619: Update What's New for codec blacklist

This commit is contained in:
Nick Coghlan 2013-11-22 23:00:22 +10:00
parent c72e4e6dcc
commit 8afc8f61f9
1 changed files with 12 additions and 11 deletions
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Doc/whatsnew/3.4.rst
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@ -194,37 +194,37 @@ in both Python 2 and Python 3, rather than being limited to Unicode text
encodings (in Python 3) or ``basestring`` <-> ``basestring`` conversions encodings (in Python 3) or ``basestring`` <-> ``basestring`` conversions
(in Python 2). (in Python 2).
In Python 3.4, the errors raised by the convenience methods when a codec In Python 3.4, the interpreter is able to identify the known non-text
produces the incorrect output type have also been updated to direct users encodings provided in the standard library and direct users towards these
towards these general purpose convenience functions:: general purpose convenience functions when appropriate::
>>> import codecs >>> import codecs
>>> codecs.encode(b"hello", "bz2_codec").decode("bz2_codec") >>> b"abcdef".decode("hex_codec")
Traceback (most recent call last): Traceback (most recent call last):
File "<stdin>", line 1, in <module> File "<stdin>", line 1, in <module>
TypeError: 'bz2_codec' decoder returned 'bytes' instead of 'str'; use codecs.decode() to decode to arbitrary types LookupError: 'hex_codec' is not a text encoding; use codecs.decode() to handle arbitrary codecs
>>> "hello".encode("rot_13") >>> "hello".encode("rot_13")
Traceback (most recent call last): Traceback (most recent call last):
File "<stdin>", line 1, in <module> File "<stdin>", line 1, in <module>
TypeError: 'rot_13' encoder returned 'str' instead of 'bytes'; use codecs.encode() to encode to arbitrary types LookupError: 'rot_13' is not a text encoding; use codecs.encode() to handle arbitrary codecs
In a related change, whenever it is feasible without breaking backwards In a related change, whenever it is feasible without breaking backwards
compatibility, exceptions raised during encoding and decoding operations compatibility, exceptions raised during encoding and decoding operations
will be wrapped in a chained exception of the same type that mentions the will be wrapped in a chained exception of the same type that mentions the
name of the codec responsible for producing the error:: name of the codec responsible for producing the error::
>>> b"hello".decode("uu_codec") >>> codecs.decode(b"abcdefgh", "hex_codec")
ValueError: Missing "begin" line in input data binascii.Error: Non-hexadecimal digit found
The above exception was the direct cause of the following exception: The above exception was the direct cause of the following exception:
Traceback (most recent call last): Traceback (most recent call last):
File "<stdin>", line 1, in <module> File "<stdin>", line 1, in <module>
ValueError: decoding with 'uu_codec' codec failed (ValueError: Missing "begin" line in input data) binascii.Error: decoding with 'hex_codec' codec failed (Error: Non-hexadecimal digit found)
>>> "hello".encode("bz2_codec") >>> codecs.encode("hello", "bz2_codec")
TypeError: 'str' does not support the buffer interface TypeError: 'str' does not support the buffer interface
The above exception was the direct cause of the following exception: The above exception was the direct cause of the following exception:
@ -233,7 +233,8 @@ name of the codec responsible for producing the error::
File "<stdin>", line 1, in <module> File "<stdin>", line 1, in <module>
TypeError: encoding with 'bz2_codec' codec failed (TypeError: 'str' does not support the buffer interface) TypeError: encoding with 'bz2_codec' codec failed (TypeError: 'str' does not support the buffer interface)
(Contributed by Nick Coghlan in :issue:`17827` and :issue:`17828`) (Contributed by Nick Coghlan in :issue:`17827`, :issue:`17828` and
:issue:`19619`)
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