Live script section breaks removes import

Question

Eugenio Grabovic 2021-10-14

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1563511-live-script-section-breaks-removes-import

评论： Eugenio Grabovic 2021-10-25

In a live script notebook, i f i import a package and add a section break, the import is removed. Is it intended to work that way?

Example:

import casadi.*

***add a section break here ***

x = SX.sym('x');

if i run the first section and then the second one, the first time it works without any issues; but if i try to add to the second section:

x = SX.sym('x');
y = SX.sym('y');

it prduces the error "Unable to solve the name SX.sym" and if i type "import" in the command window it shows the casadi package has been somehow removed, focing me to always rerun the import section

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Arthi Sathyamurthi 2021-10-25

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1563511-live-script-section-breaks-removes-import#answer_815783

编辑：Arthi Sathyamurthi 2021-10-25

The import function adds package, class, or functions to the current import list. The import list scope for a script is the entire script body. The imports in a script are available only in the script body and are not available in the scopes which call the script. Hence executing a script/live script with a particular set of code/sections, allows only that code/sections to have access to that import list scope. And any new modifications/ addition of new sections is not available in the scopes which call the script and gives an error.

You can know more about the scopes of the import function in the link here.

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Eugenio Grabovic 2021-10-25

Thank you for the answer, however this feels counterintuitive: if all variables are accessible by any sections of the script, the imports should be as well (imho).

请先登录，再进行评论。