I've been learning Python, and I keep running into the $ character in online documentation. Usually it goes something like this:
我一直在学习Python，并在在线文档中不断遇到$字符。通常是这样的:
$ python ez_setup.py (Yeah, I've been trying to install setup tools)
python ez_setup美元。py(是的，我一直在尝试安装安装工具)
I'm fairly certain that this command isn't for the python IDE or console, but I've tried windows cmd and it doesn't work. Any help?
我很确定这个命令不适用于python IDE或控制台，但我尝试过windows cmd，但它不起作用。任何帮助吗?
4 个解决方案
#1
14
As of now, Python does not implement $ in its syntax. So, it has nothing to do with Python.
到目前为止，Python并没有在其语法中实现$ $。因此，它与Python无关。
Instead, what you are seeing is the terminal prompt of a Unix-based system (Mac, Linux, etc.)
相反，您看到的是基于unix的系统(Mac、Linux等)的终端提示符。
#2
6
When you open up command prompt in Windows, you'll see something like:
当您在Windows中打开命令提示符时，您将看到如下内容:
C:\Users\Michael0x2a\Blah>
The $ symbol is the equivalent in Linux-based systems.
$符号在基于linux的系统中是等价的。
Whenever you see the $ sign, simply ignore it and type in the rest of the line without modification.
每当您看到$符号时，只需忽略它并在其余行中输入，而无需修改。
#3
4
The $ is the command prompt. It is used to signify that python ez_setup.py should be run on a command line and not on a python/perl/ruby shell
$是命令提示符。它用于表示python ez_setup。py应该在命令行上运行，而不是在python/perl/ruby shell上运行。
You might also see % python ez_setup.py, which also means the same thing
您可能还会看到% python ez_setup。py，也意味着相同的东西。
#4
2
As the two previous answers told, $ is the beginning of commandline prompt waiting for your input in Unix/Linux -systems. In Windows the similar example notation would be like
正如前面两个回答所述，$是命令行提示符的开始，等待您在Unix/Linux系统中的输入。在Windows中，类似的示例符号类似
C:\> python ez_setup.py
So you don't have to write the dollar sign. Just imagine the beginnings of Windows CMD or Powershell prompt in the beginning of line :)
所以你不需要写美元符号。想象一下Windows CMD或Powershell提示在开始时的开头:)
You can read more discussion about the history of dollar sign from Superuser.
你可以从超级用户那里看到更多关于美元符号历史的讨论。
#1
14
As of now, Python does not implement $ in its syntax. So, it has nothing to do with Python.
到目前为止，Python并没有在其语法中实现$ $。因此，它与Python无关。
Instead, what you are seeing is the terminal prompt of a Unix-based system (Mac, Linux, etc.)
相反，您看到的是基于unix的系统(Mac、Linux等)的终端提示符。
#2
6
When you open up command prompt in Windows, you'll see something like:
当您在Windows中打开命令提示符时，您将看到如下内容:
C:\Users\Michael0x2a\Blah>
The $ symbol is the equivalent in Linux-based systems.
$符号在基于linux的系统中是等价的。
Whenever you see the $ sign, simply ignore it and type in the rest of the line without modification.
每当您看到$符号时，只需忽略它并在其余行中输入，而无需修改。
#3
4
The $ is the command prompt. It is used to signify that python ez_setup.py should be run on a command line and not on a python/perl/ruby shell
$是命令提示符。它用于表示python ez_setup。py应该在命令行上运行，而不是在python/perl/ruby shell上运行。
You might also see % python ez_setup.py, which also means the same thing
您可能还会看到% python ez_setup。py，也意味着相同的东西。
#4
2
As the two previous answers told, $ is the beginning of commandline prompt waiting for your input in Unix/Linux -systems. In Windows the similar example notation would be like
正如前面两个回答所述，$是命令行提示符的开始，等待您在Unix/Linux系统中的输入。在Windows中，类似的示例符号类似
C:\> python ez_setup.py
So you don't have to write the dollar sign. Just imagine the beginnings of Windows CMD or Powershell prompt in the beginning of line :)
所以你不需要写美元符号。想象一下Windows CMD或Powershell提示在开始时的开头:)
You can read more discussion about the history of dollar sign from Superuser.
你可以从超级用户那里看到更多关于美元符号历史的讨论。