问无法在节点中使用child_process捕获Docker容器中的python

EN

const express = require('express')
const app = express()
path = require('path');
fs = require('fs')

app.get('/call_script', function(req, res) {

  function_choice = req.query.function_choice   
  args_choice = req.query.args_choice

  // call python scripts
  var spawn = require("child_process").spawn;
  var process = spawn("python",["test.py", function_args]);

  process.stdout.on("data", function (data){
    from_python = data.toString("utf8");
    from_python = from_python.replace(/\n/g, " ").replace(/\\n/g, " "); 
    res.json({
       "answer" : from_python
    })

});

function_args = sys.argv[1]

# ..... retrieve function and arguments from function_args

result = locals()[function_choice](*arr_n)

print(result)
sys.stdout.flush()

FROM node:9

# Create app directory
WORKDIR /usr/src/app

# Install app dependencies
# A wildcard is used to ensure both package.json AND package-lock.json are copied
COPY package*.json ./

RUN npm install

RUN apt-get update -y && \
    apt-get install -y python3 && \
    rm -rf /var/lib/apt/lists/*

RUN apt-get update -y
RUN apt-get -y install python3-pip

# Bundle app source
COPY . .

RUN pip3 install -r requirements.txt

EXPOSE 8899
CMD ["npm","start"]

matplotlib

pip3 show matplotlib

import sys, for p in sys.path: print(p)