shell python自定义模块安装_使用python-shell无法在heroku中安装python模块

I'm trying to import a python file into node web application. On my local machine it works fine, but when I upload it to heroku, the modules don't get imported correctly, and I get an error message saying, ModuleNotFoundError: No module named 'tensorflow'.

I'm assuming that the modules are not installed. So I made a requirements.txt file, and imported in python like this:

import subprocess

import sys

subprocess.call([sys.executable, "-r", "pip3", "install", 'requirements.txt'])

I still get the previous error of: ModuleNotFoundError: No module named 'tensorflow'. How can I install python modules in heroku while using python-shell?

Python Imports

import json

import pickle

import random

import tensorflow as tf

import tflearn

import numpy as np

import nltk

from nltk.stem.lancaster import LancasterStemmer

stemmer = LancasterStemmer()

Node

const options = {

pythonOptions: ['-u'],

pythonPath: 'python3'

};

let pyshell = new PythonShell('./python_2/script.py', options);

Here's the full output error I'm receiving:

2019-09-02T19:11:03.182951+00:00 app[web.1]: events.js:174

2019-09-02T19:11:03.182964+00:00 app[web.1]: throw er; // Unhandled 'error' event

2019-09-02T19:11:03.182967+00:00 app[web.1]: ^

2019-09-02T19:11:03.182969+00:00 app[web.1]:

2019-09-02T19:11:03.182971+00:00 app[web.1]: Error: ModuleNotFoundError: No module named 'tensorflow'

2019-09-02T19:11:03.182973+00:00 app[web.1]: at PythonShell.parseError (/app/node_modules/python-shell/index.js:260:21)

2019-09-02T19:11:03.182975+00:00 app[web.1]: at terminateIfNeeded (/app/node_modules/python-shell/index.js:139:32)

2019-09-02T19:11:03.182978+00:00 app[web.1]: at ChildProcess. (/app/node_modules/python-shell/index.js:131:13)

2019-09-02T19:11:03.182980+00:00 app[web.1]: at ChildProcess.emit (events.js:189:13)

2019-09-02T19:11:03.182983+00:00 app[web.1]: at Process.ChildProcess._handle.onexit (internal/child_process.js:248:12)

2019-09-02T19:11:03.182985+00:00 app[web.1]: ----- Python Traceback -----

2019-09-02T19:11:03.182987+00:00 app[web.1]: File "python_2/model.py", line 5, in

2019-09-02T19:11:03.182989+00:00 app[web.1]: import tensorflow as tf

2019-09-02T19:11:03.182991+00:00 app[web.1]: Emitted 'error' event at:

2019-09-02T19:11:03.182994+00:00 app[web.1]: at terminateIfNeeded (/app/node_modules/python-shell/index.js:153:26)

2019-09-02T19:11:03.182996+00:00 app[web.1]: at ChildProcess. (/app/node_modules/python-shell/index.js:131:13)

2019-09-02T19:11:03.182998+00:00 app[web.1]: at ChildProcess.emit (events.js:189:13)

2019-09-02T19:11:03.183000+00:00 app[web.1]: at Process.ChildProcess._handle.onexit (internal/child_process.js:248:12)

2019-09-02T19:11:03.224746+00:00 app[web.1]: npm ERR! code ELIFECYCLE

2019-09-02T19:11:03.225516+00:00 app[web.1]: npm ERR! errno 1

2019-09-02T19:11:03.230041+00:00 app[web.1]: npm ERR! backend@1.0.0 start: `node index.js`

2019-09-02T19:11:03.230381+00:00 app[web.1]: npm ERR! Exit status 1

2019-09-02T19:11:03.230929+00:00 app[web.1]: npm ERR!

2019-09-02T19:11:03.232455+00:00 app[web.1]: npm ERR! Failed at the backend@1.0.0 start script.

2019-09-02T19:11:03.233317+00:00 app[web.1]: npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

2019-09-02T19:11:03.270676+00:00 app[web.1]:

2019-09-02T19:11:03.272904+00:00 app[web.1]: npm ERR! A complete log of this run can be found in:

2019-09-02T19:11:03.273603+00:00 app[web.1]: npm ERR! /app/.npm/_logs/2019-09-02T19_11_03_247Z-debug.log

解决方案

Assuming you've already configured multiple buildpacks for your app, which if you've got both node and python you likely have, you should be able to simply add tensorflow to your existing requirements.txt file to have it installed during deployment.

That file should be in the root directory of your application, beside your package.json.

I just added a runtime.txt file inserting: Python-3.6.5 but I'm still getting the error

Your runtime.txt should also be in the root directory of your project, and your requested Python version should be all lowercase, e.g.

python-3.6.5