我在节点js app中设置了一个环境变量:process.env.data = "data-env";
在我的python脚本中使用:print(os.environ["data"])
访问相同的环境变量
but getting error throw err;
^
Error: KeyError: 'data'
at PythonShell.parseError (H:\NodeJS\node_modules\python-shell\index.js:184:17)
at terminateIfNeeded (H:\NodeJS\node_modules\python-shell\index.js:98:28)
at ChildProcess.<anonymous> (H:\NodeJS\node_modules\python-shell\index.js:89:9)
at emitTwo (events.js:126:13)
at ChildProcess.emit (events.js:214:7)
at Process.ChildProcess._handle.onexit (internal/child_process.js:198:12)
----- Python Traceback -----
File "script.py", line 5, in <module>
print(os.environ["data"])
File "C:\Program Files\Anaconda3\lib\os.py", line 725, in __getitem__
raise KeyError(key) from None
使用nodeJs中的以下代码运行py脚本
var PythonShell = require('python-shell');
var myPythonScriptPath = './script.py';
var pyshell = new PythonShell(myPythonScriptPath);
pyshell.on('message', function (message) {
// received a message sent from the Python script (a simple "print" statement)
console.log(message);
});
// end the input stream and allow the process to exit
pyshell.end(function (err) {
if (err){
throw err;
};
console.log('finished');
});
我做错了什么吗?
发布于 2018-06-04 03:16:41
修改process.env
会更改当前进程和(可选)子进程的环境变量。
因此,除非您从Node.js应用程序启动Python脚本,否则无法从Python脚本访问在Node.js应用程序中设置的环境变量。
编辑:
PythonShell
接受第二个参数options
,您可以使用该参数将环境变量向下传播到子进程。
var pyshell = new PythonShell(myPythonScriptPath, {
env: process.env,
});
https://stackoverflow.com/questions/50669874
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