消息 [167250] - Python tracker

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作者	vstinner
收信人	M..Z., amaury.forgeotdarc, flox, georg.brandl, ishimoto, pitrou, vstinner
日期	2012-08-02.20:16:44
SpamBayes Score	-1.0
Marked as misclassified	是
Message-id	<CAMpsgwZP3gLjW7+ZGaz_HS=Ba+eu9jun1v4u0rcu02Mk3vL2jw@mail.gmail.com>
In-reply-to	<1343884809.78.0.113718573899.issue13119@psf.upfronthosting.co.za>

内容
> I wonder why "print(1, file=sys.stderr)" returns '1' instead of '1\n'. I suppose that you mean "returns '1\n' instead of '1'". This is a major change between Python 2 and Python 3. Use print(1, end=' ') if you want the same behaviour. See: http://docs.python.org/dev/whatsnew/3.0.html#print-is-a-function You can also use the print() as a function in Python 2 using "from __future__ import print_function": http://docs.python.org/dev/whatsnew/2.6.html#pep-3105-print-as-a-function I never liked "print expr," because it looks like a typo or an ugly hack. It's easy to add a comma by mistake.

> I wonder why "print(1, file=sys.stderr)" returns '1' instead of '1\n'.

I suppose that you mean "returns '1\n' instead of '1'". This is a
major change between Python 2 and Python 3. Use print(1, end=' ') if
you want the same behaviour. See:
http://docs.python.org/dev/whatsnew/3.0.html#print-is-a-function

You can also use the print() as a function in Python 2 using "from
__future__ import print_function":
http://docs.python.org/dev/whatsnew/2.6.html#pep-3105-print-as-a-function

I never liked "print expr," because it looks like a typo or an ugly
hack. It's easy to add a comma by mistake.

历史
日期	用户	动作	参数
2012-08-02 20:16:45	vstinner	修改	recipients: + vstinner, georg.brandl, ishimoto, amaury.forgeotdarc, pitrou, flox, M..Z.
2012-08-02 20:16:45	vstinner	链接	issue13119 messages
2012-08-02 20:16:44	vstinner	创建