On 01/12/2014 06:07 PM, Daniel Holth wrote:
On Sun, Jan 12, 2014 at 8:27 PM, Ethan Furman <et...@stoneleaf.us> wrote:
On 01/12/2014 04:47 PM, Guido van Rossum wrote:
%s seems the trickiest: I think with a bytes argument it should just
insert those bytes (and the padding modifiers should work too), and
for other types it should probably work like %a, so that it works as
expected for numeric values, and with a string argument it will return
the ascii()-variant of its repr(). Examples:
b'%s' % 42 == b'42'
b'%s' % 'x' == b"'x'" (i.e. the three-byte string containing an 'x'
enclosed in single quotes)
I'm not sure about the quotes. Would anyone ever actually want those in the
byte stream?
Is there a formatting character that means "anything except a unicode
string" to prevent accidentally interpolating a Unicode string into a
bytes string without [a sane] encoding?
In reference to a byte stream, if you do:
--> b'%s' % 'some text'.encode('cp1241')
it's really just bytes into bytes.
If you do :
--> b'%s' % 'some text'
then the encoding is ASCII with strict error checking. So if it's not representable as clean ASCII either encode it
manually, or prepare for it to blow up with an UnicodeEncodeError.
--
~Ethan~
_______________________________________________
Python-Dev mailing list
Python-Dev@python.org
https://mail.python.org/mailman/listinfo/python-dev
Unsubscribe:
https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
