pynode-fix v0.4.7

PyNode

Call python code from node.js

Node v10 or above is required

Only tested with python 3.6.x and python 3.7.x. Probably wont work with Python 2.7

Installation

BEFORE NPM INSTALL OR YARN INSTALL

• Make sure python in your system PATH is the correct one: python --version
• Linux and Mac only: make sure python-config is also in your path and is from the correct python installation. You may have to symlink python3-config to /usr/local/bin.
• yarn add @fridgerator/pynode or npm install @fridgerator/pynode

Usage

In a python file test.py:

def add(a, b):
  return a + b

in node:

const pynode = require('@fridgerator/pynode')

// Workaround for linking issue in linux:
// https://bugs.python.org/issue4434
// if you get: `undefined symbol: PyExc_ValueError` or `undefined symbol: PyExc_SystemError`
pynode.dlOpen('libpython3.6m.so') // your libpython shared library

// optionally pass a path to use as Python module search path
pynode.startInterpreter()

// add current path as Python module search path, so it finds our test.py
pynode.appendSysPath('./')

// open the python file (module)
pynode.openFile('test')

// call the python function and get a return value
pynode.call('add', 1, 2, (err, result) => {
  if (err) return console.log('error : ', err)
  result === 3 // true
})