建议：将sys添加到__builtins__ [英] Proposal: add sys to __builtins__
问题描述
人们会怎样考虑将sys添加到__builtins__以便
" import sys"不再需要？这是我必须添加的内容
我写的每个脚本都不是单行，因为他们有这个成语
在底部：
if __name__ ==" __ main __"：
sys.exit（main（sys.argv [1：]））
此外，进口系统的必要性让一些单线球员比他们应该更加笨拙 - 这肯定是我在单线上缺少最多的模块。例如，有了这个提议，这个
不优雅的单行：
$ python -c" import sys; print''''。join（sorted（sys.stdin.readlines（）））"
可以替换为：
$ python -c" print''''。join（sorted（sys.stdin.readlines（）））"
因为sys肯定是最常用的模块（它在我的系统中导入了108个2.4 2.4 stdlib模块的
，当然还有超过
任何其他模块），我希望很少有人会受到< br $>
命名空间冲突。
其他语言（例如C＃）总是使他们的系统命名空间可用
而不需要特殊的导入。 />
简而言之，鉴于sys的广泛使用，其明确的性质，以及它实际上已经内置的事实，尽管没有暴露出来，我认为即使没有
导入声明，如果系统总是被允许，我们会更好。
-
Michael Hoffman
What would people think about adding sys to __builtins__ so that
"import sys" is no longer necessary? This is something I must add to
every script I write that''s not a one-liner since they have this idiom
at the bottom:
if __name__ == "__main__":
sys.exit(main(sys.argv[1:]))
Additionally, the necessity of "import sys" makes some one-liners a
little more unwieldy than they should be--it is surely the module I am
missing the most in one-liners. For example, with this proposal, this
inelegant one-liner:
$ python -c "import sys; print ''''.join(sorted(sys.stdin.readlines()))"
could be replaced by:
$ python -c "print ''''.join(sorted(sys.stdin.readlines()))"
Since sys is surely the most commonly used module (it is imported in 108
of 188 Python 2.4 stdlib modules on my system, and certainly more than
any other module), I would hope few people would be affected by a
namespace collision.
Other languages (e.g. C#) always make their system namespace available
without needing a special import.
In short, given the wide use of sys, its unambiguous nature, and the
fact that it really is built-in already, although not exposed as such, I
think we would be better off if sys were always allowed even without an
import statement.
--
Michael Hoffman
推荐答案
pytho n -cimport sys; print''''。join（sorted（sys.stdin.readlines（）））"
可以替换为：
python -c "import sys; print ''''.join(sorted(sys.stdin.readlines()))"
could be replaced by:
python -c" print''''。join（sorted（sys.stdin.readlines（）））"
因为sys肯定是最常用的模块（它是在我的系统中导入的108个/阶段，每个模块中有188个Python 2.4 stdlib模块的b
），我希望很少有人能够使用它。会受到
命名空间冲突的影响。
其他语言（例如C＃）总是使他们的系统命名空间可用
而不需要一个特殊的导入。
简而言之，鉴于sys的广泛使用，其明确的性质，以及它确实已内置的事实，虽然没有这样曝光，但我认为如果没有
导入声明，即使系统总是被允许，我们会更好。
-
Michael Hoffman
python -c "print ''''.join(sorted(sys.stdin.readlines()))"
Since sys is surely the most commonly used module (it is imported in 108
of 188 Python 2.4 stdlib modules on my system, and certainly more than
any other module), I would hope few people would be affected by a
namespace collision.
Other languages (e.g. C#) always make their system namespace available
without needing a special import.
In short, given the wide use of sys, its unambiguous nature, and the
fact that it really is built-in already, although not exposed as such, I
think we would be better off if sys were always allowed even without an
import statement.
--
Michael Hoffman
Micha el Hoffman< ca ******* @ mh391.invalid>写在
新闻：df ********** @ gemini.csx.cam.ac.uk：
Michael Hoffman <ca*******@mh391.invalid> wrote in
news:df**********@gemini.csx.cam.ac.uk:
人们会怎么想？关于将sys添加到__builtins__以便
import sys不再需要？这是我必须添加到我写的每个脚本中的东西，因为他们在底部有这个成语，所以不是单行的：
如果__name__ ==" ; __ main __"：
sys.exit（main（sys.argv [1：]））
另外，import sys的必要性使一些单行程比它们应该更加笨拙 - 这肯定是我在单行中最缺少的模块。对于
示例，有了这个提议，这个不优雅的单行：
What would people think about adding sys to __builtins__ so that
"import sys" is no longer necessary? This is something I must
add to every script I write that''s not a one-liner since they
have this idiom at the bottom:
if __name__ == "__main__":
sys.exit(main(sys.argv[1:]))
Additionally, the necessity of "import sys" makes some
one-liners a little more unwieldy than they should be--it is
surely the module I am missing the most in one-liners. For
example, with this proposal, this inelegant one-liner:
这篇关于建议：将sys添加到__builtins__的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
