如何解决在Object._b_.NotImplementedError$ factory处获取错误使用Brython在$ make_exc处评估
嗨,我正在使用 Brython 作为初学者。我的要求是从基于浏览器的应用程序ping一个IP地址。 我想知道是否有可能发生Brython 。我编写了很小的代码来实现它。
index.html
<html>
<head>
<script src="https://cdn.jsdelivr.net/npm/Brython@3.8.10/Brython.min.js">
</script>
<script src="https://cdn.jsdelivr.net/npm/Brython@3.8.10/Brython_stdlib.js">
</script>
<script type="text/python" src="./memos.py"></script>
<script type="text/python" src="./hello.py"></script>
</head>
<body onload="Brython()">
<script type="text/python">
from browser import document,alert
from browser import document
from browser.template import Template
from hello import sayHi,getFullName
from memos import ping
def pingIP(event):
ipAddress = document["ipadrs"].value
pingResponse = ping(ipAddress)
alert(pingResponse)
document <= myFullName
document["pingBtn"].bind("click",pingIP)
Template(document["pingResponse"]).render(pingResponse=document)
</script>
<div id="d2">
<table>
<tr>
<td>Enter IP address:</td>
<td><input type="text" name="ipadrs" id="ipadrs"></td>
<td><button id="pingBtn">Ping</button></td>
<td><span id="pingResponse">Are you able to ping (Ans: True / False): {pingResponse}</span></td>
</tr>
</table>
</div>
</body>
</html>
下面是ping IP地址的Python代码
import platform
import subprocess
def ping(host):
"""
Returns True if host (str) responds to a ping request.
Remember that a host may not respond to a ping (ICMP) request even if the host name is valid.
"""
print("hiii");
# Option for the number of packets as a function of
param = '-n' if platform.system().lower()=='windows' else '-c'
# Building the command. Ex: "ping -c 1 google.com"
command = ['ping',param,'1',host]
return subprocess.call(command) == 0
ping IP地址时出现以下错误。
Uncaught Error
at Object._b_.NotImplementedError.$factory (eval at $make_exc (Brython.js:7989),<anonymous>:1:212)
at $module.<computed> (eval at run_js (Brython.js:9382),<anonymous>:128:43)
at _execute_child13056 (eval at exec_module (Brython.js:9485),<anonymous>:6024:114)
at $ (Brython.js:5492)
at __init__13024 (eval at exec_module (Brython.js:9485),<anonymous>:2801:76)
at r.__call__ (Brython.js:5698)
at s (Brython.js:5876)
at call13011 (eval at exec_module (Brython.js:9485),<anonymous>:1598:98)
at ping9 (eval at run_py (Brython.js:9435),<anonymous>:54:103)
at pingIP0 (eval at e.loop (Brython.js:5368),<anonymous>:63:93)
_b_.NotImplementedError.$factory @ VM161060:1
$module.<computed> @ VM161447:128
_execute_child13056 @ VM161128:6024
$ @ Brython.js:5492
__init__13024 @ VM161128:2801
r.__call__ @ Brython.js:5698
s @ Brython.js:5876
call13011 @ VM161128:1598
ping9 @ VM161126:54
pingIP0 @ VM161117:63
_ @ Brython.js:13593
但是,我可以在NodeJ中实现它。
解决方法
无法通过浏览器进行。您无法从浏览器执行系统调用。 Brython就像打字机一样,是Typescript。
引用this链接。按照此链接“ ,但是出于安全原因,无论如何,都无法在命令行中执行程序,例如从浏览器执行ping,无论是Java脚本还是Brython。”
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