如何使通过 Jupyter.kernel.execute 命令执行的 python 命令在 Jupyter Notebook 的输入单元中可见

Question

我可以通过 Jupyter.kernel.execute(command) 从 Javascript 端执行 python 命令。例如，命令可能类似于“a = 3”。我可以看到一个名为“a”的新变量设置为 3，没关系。

我想让这个命令在 INPUT CELL 中回显，就好像它是手动输入的一样。有没有可能，怎么做？

Answer 1

一个非常简单的例子是（将下面的代码粘贴到笔记本单元格中）：

%%javascript

// Function that accepts a string of code
var create_and_execute_cell_below = function (code){
    var nb = Jupyter.notebook

    // create cell below this one
    nb.insert_cell_below()

    // select cell below (the one we have created)
    var cell = nb.select_next().get_selected_cell()

    // set text in the cell
    cell.set_text(code)

    // execute cell
    cell.execute()
}

// run the function created above with code 'k = 1'
// and it will create a new cell, filled with 'k = 1'
// and it will execute that cell.
// if you run this cell using [ctrl] + [enter] only one cell
// will be created.
// if you run this cell using [Shift] + [enter] two cells
// will be created, the one of the [Shift] + [enter] command
// and the one of the function created above with the code.
create_and_execute_cell_below('k = 1')

希望对你有帮助。

OTOH，the front-end API could be not very stable and there is a lack of documentation 和一些东西可能会改变，也许上面发布的代码不是满足您需要的最佳方式。