blocks|key|2501779|text|你知道这篇博文吗？http://jakevdp.github.io/blog/2013/06/01/ipython-notebook-javascript-python-communication/|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2501780|我认为他使用的方法不再有效，但也许它可以让你进步一步|2501781|entityMap|0|LINK|mutability|MUTABLE|url|http://jakevdp.github.io/blog/2013/06/01/ipython-notebook-javascript-python-communication/^0|9|2I|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]]|C|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@]|C|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]]]

Are you aware of this blogpost? <a href="http://jakevdp.github.io/blog/2013/06/01/ipython-notebook-javascript-python-communication/" rel="nofollow">http://jakevdp.github.io/blog/2013/06/01/ipython-notebook-javascript-python-communication/</a>

I think the exact way he uses doesn't work anymore, but maybe it can get you a step forward

blocks|key|2501794|text|您可以使用Jupyter.notebook.kernel.execute()函数从JavaScript调用Python代码执行。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2501795|依靠Craig+Dennis提供的这个gist，您可以将此代码插入到Jupyter+cell中并运行它|2501796|%25%25javascript
window.executePython+=+function(python)+{
++++return+new+Promise((resolve,+reject)+=>+{
++++++++var+callbacks+=+{
++++++++++++iopub:+{
++++++++++++++++output:+(data)+=>+resolve(data.content.text.trim())
++++++++++++}
++++++++};
++++++++Jupyter.notebook.kernel.execute(`${python}`,+callbacks);++++
++++});
}

function+Log_out(r)
{+console.log(r);+};

var+code+=+
'for+i+in+range(1,6):'%2B
'++++print(+"#"+%2B+str(i))';

window.executePython(+code+)
++++.then(result+=>+Log_out(result));+//+Log+out|code-block|syntax|javascript|2501797|结果将被输出到浏览器javascript控制台。|2501798|entityMap|0|LINK|mutability|MUTABLE|url|https://gist.github.com/craigsdennis/ddfaa99a6291f05fef879329821872ee^0|5|X|0|J|4|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|Z|8|@]|D|@$9|10|A|11|1|12]]|E|$]]|$1|H|3|I|5|J|7|13|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|14|8|@]|D|@]|E|$]]|$1|O|3|-4|5|6|7|15|8|@]|D|@]|E|$]]]|P|$Q|$5|R|S|T|E|$U|V]]]]

You can call Python code execution from JavaScript with <code>Jupyter.notebook.kernel.execute()</code> function.

Depend on this <a href="https://gist.github.com/craigsdennis/ddfaa99a6291f05fef879329821872ee" rel="nofollow noreferrer">gist</a> from Craig Dennis you can insert this code in Jupyter cell and run it

<pre><code>%%javascript
window.executePython = function(python) {
 return new Promise((resolve, reject) =&gt; {
 var callbacks = {
 iopub: {
 output: (data) =&gt; resolve(data.content.text.trim())
 }
 };
 Jupyter.notebook.kernel.execute(`${python}`, callbacks); 
 });
}

function Log_out(r)
{ console.log(r); };

var code = 
'for i in range(1,6):'+
' print( "#" + str(i))';

window.executePython( code )
 .then(result =&gt; Log_out(result)); // Log out
</code></pre>

Result would be output to browser javascript console.

blocks|key|2711660|text|在花了两天的时间之后，我找到了一个对我有效的解决方案。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2711661|为了运行Python代码，我简单地使用了“Jupyter.notebook.kernel.execute”。为了得到答案，我在这个链接上找到了有用的信息：https://jupyter-notebook.readthedocs.io/en/stable/comms.html|offset|length|2711662|from+ipykernel.comm+import+Comm

js_input+=+[]+#case+willing+to+track

def+func_edit(cobj,text):
++++my_comm+=+Comm(target_name=cobj)+#this+is+the+callback
++++my_comm.send(''+if++text+==+''+else+'Return:+'+%2B+text)

++++global+js_input
++++js_input.append(f'origin={cobj}+text={text}')
++++
++++
++++
from+IPython.display+import+display,+HTML
html+=+"""
<script>
++++var+comm_name+=+"this_control";
++++function+fcalc(x)
++++{
++++++++//+here+I+am+passing+to+the+Python+function+the+value+to+edit+and+the+address+for+getting+the+return+value
++++++++IPython.notebook.kernel.execute("func_edit('"+%2B+comm_name+%2B+"','"+%2B+x.value+%2B+"')")
++++}
++++Jupyter.notebook.kernel.comm_manager.register_target(comm_name,+function(comm,+msg)+
++++++++{
++++++++++//+comm+is+the+frontend+comm+instance,++msg+is+the+comm_open+message,+which+can+carry+data

++++++++++++//+Register+handlers+for+later+messages:
++++++++++++comm.on_msg(function(msg)+{+
++++++++++++++++document.getElementById("out").value+=+msg.content.data;
++++++++++++});
++++++++++++
++++++++++++//comm.on_close(function(msg)+{...});
++++++++++++//comm.send({'foo':+40});+what+is+it??
++++++++});
</script>
<label+for="in">Input:</label>
<input+type="text"+id="in"+name="in"+oninput="fcalc(this)">
<label+for="out">Out:</label>
<input+type="text"+id="out">
"""
display(HTML(html))|code-block|syntax|javascript|2711663|entityMap|0|LINK|mutability|MUTABLE|url|https://jupyter-notebook.readthedocs.io/en/stable/comms.html^0|0|25|1O|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@$D|U|E|V|1|W]]|A|$]]|$1|F|3|G|5|H|7|X|8|@]|9|@]|A|$I|J]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

After spending two days on it, here is the solution that worked for me.
To run Python code I am simpy using 'Jupyter.notebook.kernel.execute'. To get the answer from it I found usefull information at this link: <a href="https://jupyter-notebook.readthedocs.io/en/stable/comms.html" rel="nofollow noreferrer">https://jupyter-notebook.readthedocs.io/en/stable/comms.html</a>
<pre><code>from ipykernel.comm import Comm

js_input = [] #case willing to track

def func_edit(cobj,text):
 my_comm = Comm(target_name=cobj) #this is the callback
 my_comm.send('' if text == '' else 'Return: ' + text)

 global js_input
 js_input.append(f'origin={cobj} text={text}')
 
 
 
from IPython.display import display, HTML
html = &quot;&quot;&quot;
&lt;script&gt;
 var comm_name = &quot;this_control&quot;;
 function fcalc(x)
 {
 // here I am passing to the Python function the value to edit and the address for getting the return value
 IPython.notebook.kernel.execute(&quot;func_edit('&quot; + comm_name + &quot;','&quot; + x.value + &quot;')&quot;)
 }
 Jupyter.notebook.kernel.comm_manager.register_target(comm_name, function(comm, msg) 
 {
 // comm is the frontend comm instance, msg is the comm_open message, which can carry data

 // Register handlers for later messages:
 comm.on_msg(function(msg) { 
 document.getElementById(&quot;out&quot;).value = msg.content.data;
 });
 
 //comm.on_close(function(msg) {...});
 //comm.send({'foo': 40}); what is it??
 });
&lt;/script&gt;
&lt;label for=&quot;in&quot;&gt;Input:&lt;/label&gt;
&lt;input type=&quot;text&quot; id=&quot;in&quot; name=&quot;in&quot; oninput=&quot;fcalc(this)&quot;&gt;
&lt;label for=&quot;out&quot;&gt;Out:&lt;/label&gt;
&lt;input type=&quot;text&quot; id=&quot;out&quot;&gt;
&quot;&quot;&quot;
display(HTML(html))
</code></pre>

I am trying to execute python code through javascript directly:

<ol>
<li>I fire up IPython Notebook on Chrome</li>
<li>Using chrome developer tools I open up the javascript console.</li>
</ol>

In the javascript consolde, I type: <code>IPython.notebook.kernel.execute("2+2")</code>

<a href="https://i.stack.imgur.com/J7lg6.png" rel="noreferrer"><img src="https://i.stack.imgur.com/J7lg6.png" alt="enter image description here"></a>

But I get a strange output: <code>"6CEA73CC644648DDA978FDD6A913E519"</code>

Is there any way to take advantage of all the IPython javascript functions available, to run python code from the javascript console as depicted in the image? I'm sure there's a way but I've been beating at it for way too long and thought I would post here.

(I need this to build an app on top of IPython)

Thanks in advance!

IPython notebook ~ Using javascript to run python code?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我正在尝试通过javascript直接执行python代码：我使用chrome开发人员工具在chrome上启动IPython笔记本我打开javascript控制台。在javascript控制台中，我输入：IPython.notebook.kernel.execute("2+2")​​但是我得到了一个奇怪的输出："6CE...

问IPython notebook ~使用javascript运行python代码？
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