如何显示从node.js调用的python脚本的输出

Question

我正在使用next方法从node.js脚本中调用python脚本，

 const spawn = require("child_process").spawn;
 const pythonProcess = await spawn('python', ["script.py", "test",]);

如何使python脚本输出与node.js输出一起显示在控制台中？

Answer 1

您可以稍微修改一下nodejs代码以获取输出

假设这是一个python脚本

#!/usr/bin/python
#
# for-loop.py: Sample for loop to print welcome message 3 times
#
for i in '123':
        print "Welcome",i,"times"

Nodejs脚本

require("child_process").spawn('python', ['./loop.py'], {
  cwd: process.cwd(),
  detached: true,
  stdio: "inherit"
});

或者您也可以检查python进程代码。

var childProcess = require("child_process").spawn('python', ['./loop.py'], {stdio: "inherit"})
childProcess.on('data', function(data){
    process.stdout.write("python script output",data);
});
childProcess.on('close', function(code) {
        if ( code === 1 ){
            process.stderr.write("error occured",code);
            process.exit(1);
        }
        else{
            process.stdout.write('"python script exist with code: ' + code + '\n');
        }
    });

这是来自nodejs的控制台日志