Python 3 中的网络使用 [英] Net Use in Python 3

问题描述

任何人都可以帮助我尝试使用 NET 使用 python，我不知道 python 和 perl 中的/之间的区别，因为 perl 中的代码有效

anyone could help me with python trying to use NET use, I don't know the diferences between / in python and perl, because code in perl works

$runMap = "C:\\Windows\\System32\\net.exe use \\\\$ip\\D\$ /persistent:no /user:$user_name $passwd"; 
system($runMap);

但在 Python 3 中不起作用

But in Python 3 don't work

os.system("C:/Windows/System32/net.exe use Z: \\\\ip/D:/ /persistent:no /user:user pass")

推荐答案

Perl 使用了interpolation，即可以在双引号字符串中嵌入变量，因为 Perl 5 内插变量开始使用 $ 或 @ 标记.在您的情况下，您正在嵌入 $user_name 和 $passwd.

Perl is using interpolation, that is, it is possible to embed variables inside a double quoted string, since Perl 5 interpolated variables start with a $ or a @ marker. In your case you are embedding $user_name and $passwd.

Python 变量名没有以魔法字符"(sigil)为前缀，因此您不能将它们嵌入字符串中，除非使用格式化语句.有几种机制，这里有一个类似于 printf 的想法:

Python variable names are not prefixed by a "magic character" (sigil), so you cannot embed them inside strings except by using formatting statements. There are a couple of regimes, here is one which is a similar idea to printf:

cmd = "C:/Windows/System32/net.exe use Z: \\\\ip/D:/ /persistent:no /user:%s %s" % (username, passwd)

os.system(cmd)

作为前 Perlmonger，我非常想念插值，我编写了一个 Python 模块来支持它.虽然我在 Python 中学到了很多东西，否则就是在浪费时间.Python 编程是一种不同的风格，您不再需要插值.

As an ex-Perlmonger I missed interpolation so much I wrote a Python module to support it. While I learnt a lot about Python doing it, it was otherwise a waste of time. Python programming is a different style, you don't need interpolation any more.

顺便说一句，与 Perl 的 system() 不同，Python 的 os.system() 将总是生成一个 shell(就像 C 的一样).因此，它通常被认为已被弃用.subprocess.Popen() 方法提供了更多的控制.

By the way, unlike Perl's system(), Python's os.system() will always spawn a shell (as does C's). Therefore it is generally considered to be deprecated. The subprocess.Popen() method gives much more control.

随着 Python 3.6 和 Literal String Interpolation(在 PEP 498 中指定)的出现 - 通常称为 f-strings - 我的原始帖子需要另一种方式来做

With the advent of Python 3.6 and Literal String Interpolation (specified in PEP 498) - more commonly known as f-strings - my original post needs another way to do it.

可以使用单引号或双引号，甚至是三引号.基本上我们只是把 Python 表达式，通常是一个变量，放在大括号内(类似于 Ruby).

Single or double quotes may be used, even triple quotes. Basically we just put the Python expression, commonly a variable, inside braces (similar to Ruby).

例如:

os.system(f"C:/Windows/System32/net.exe use Z: \\\\ip/D:/ /persistent:no /user:{username} {passwd}")

关于 subprocess.Popen() 的评论也已过时，因为 Python 3.5 首选接口现在是 subprocess.run().

The comment about subprocess.Popen() is also out of date, since Python 3.5 the preferred interface is now subprocess.run().

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