笔记本:使用引号和$将字符串变量作为参数通过命令行(！)传递给python脚本，例如-arg1'$ varible1'

问题描述

在笔记本计算机的命令行中使用变量时，我看到我们可以在变量前使用$，或使用{}包围变量，例如

In using variables in the command line from a notebook cell, I saw that we can use put a $ in front of the variable, or surround the variable using {} , for example

!command {variable}

或

!command $variable

但是，当我在笔记本计算机中使用命令行运行python脚本时，会出现错误

But when I was running a python script using the command line from a notebook cell, I would get errors

variable1 = '/path/to/directory'
variable2 = 7

!Script.py -arg1 $variable1 -arg2 $variable2

和

!Script.py -arg1 {variable1} -arg2 {variable2}

不起作用.

稍作试验后，我发现如果变量是字符串，则用引号将整个arg括起来即可.

After experimenting a little bit, I found that if a variable is a string, surrounding the whole arg with quotes got it to work.

variable1 = '/path/to/directory'
variable2 = 7

!Script.py -arg1 '$variable1' -arg2 $variable2

这是怎么回事?我试图查找这种现象，但找不到任何东西.

What is going on? I tried to look up this phenomena but I couldn't find anything.

如果有所作为，我正在使用google colab colaboratory

If it makes a difference, I am using google colab colaboratory

推荐答案

您尝试过吗?

!Script.py -arg1 $variable1\ -arg2 $variable2\

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