如何将命令的输出分配给 Jupyter Notebook 中的变量？

Question

Is there a way to assign a value to a variable, that value which we get in terminal by writing any command?有没有办法给一个变量赋值，这个值是我们通过编写任何命令在终端中得到的？

I try with this code:我尝试使用此代码：

!number_of_lines=$(wc -l < cord_19.json)
!echo $number_of_lines

I get empty output.我得到空输出。 When I run当我跑

!wc -l < cord_19.json

I get correct response with number.我得到了正确的数字响应。

Do you have idea what is wrong or how can I set variable?你知道出了什么问题或者我如何设置变量？

Answer 1

Try:尝试：

number_of_lines = !wc -l < cord_19.json
!echo $number_of_lines

or:或者：

number_of_lines = !wc -l < cord_19.json
print(number_of_lines)