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Electronとpython-shellの実行環境作成(vueも少し)

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※正しい方法かはわからないので、使用する際は自身で検証してください。

Electronとpython-shellを使ったアプリを作ろうと思い、調べた結果をまとめる。
(実際には作ってない。)

1.Electronアプリ作成

npx create-electron-app myapp
cd myapp
npm start

2.pythonの環境作成とactivate

cd src
python -m venv --copies py38
source py38/bin/activate

3.ElectronでPythonを使用するためにpython-shellをインストール。

npm install python-shell
python -m pip install python-shell

4.preload.jsを作成する。

preload.js
const { contextBridge, ipcRenderer } = require('electron')

contextBridge.exposeInMainWorld('myapi',{
    send: async (data) => await ipcRenderer.invoke('showdir',data),
    on : (channel,func) =>{
        ipcRenderer.once(channel,(event,data)=>func(data))
    }
})


contextBridge.exposeInMainWorld('myapi1',{
    send: async (data) => await ipcRenderer.invoke('showexecute',data),
    on : (channel,func) =>{
        ipcRenderer.once(channel,(event,data)=>func(data))
    }
})

5.index.jsとindex.htmlは下記のように変更

index.jsの下記を追加して、 PythonShell.runString に渡してあげると作成したpythonの環境を使用してくれている(はず)

const options = {
  mode :'text',
  pythonPath : __dirname + '/py38/bin/python'
}
index.html
<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8" />
    <title>Hello World!</title>
    <link rel="stylesheet" href="index.css" />
    <script src="https://unpkg.com/vue@next"></script>
  </head>
  <body>
    <div id="app">
      <p>wellcome!</p>
      <div>
        <button type="button" v-on:click="showdir">Button</button>
        <button type="button" v-on:click="showexec">Button1</button>
      </div>
    </div>
  </body>
  <script>
    const app = {
      setup(){

      },
      data(){
        return {
          title : "TitleA"
        }
      },
      methods:{
        async showdir(){
          const message = window.myapi.send({"send_data":"send"})
          const message2 = window.myapi.on("return_data",async(data)=>{
            alert(data)
          })
        },

        async showexec(){
          const message = window.myapi1.send({"send_data":"send"})
          const message2 = window.myapi1.on("return_data1",async(data)=>{
            alert(data)
          })
        }
      }
    }

    Vue.createApp(app).mount('#app')
  </script>
</html>
index.js
const { app, BrowserWindow, ipcMain } = require('electron');
const path = require('path');
const { PythonShell } = require('python-shell')

if (require('electron-squirrel-startup')) {
  app.quit();
}

const createWindow = () => {
  // Create the browser window.
  const mainWindow = new BrowserWindow({
    width: 800,
    height: 600,
    webPreferences: {
      preload: path.join(__dirname, 'preload.js'),
    },
  });

  // and load the index.html of the app.
  mainWindow.loadFile(path.join(__dirname, 'index.html'));

  // Open the DevTools.
  mainWindow.webContents.openDevTools();
};

app.on('ready', createWindow);
app.on('window-all-closed', () => {
  if (process.platform !== 'darwin') {
    app.quit();
  }
});

app.on('activate', () => {
  // On OS X it's common to re-create a window in the app when the
  // dock icon is clicked and there are no other windows open.
  if (BrowserWindow.getAllWindows().length === 0) {
    createWindow();
  }
});

// In this file you can include the rest of your app's specific main process
// code. You can also put them in separate files and import them here.


const options = {
  mode :'text',
  pythonPath : __dirname + '/py38/bin/python'
}

ipcMain.handle('showdir', async (event,data)=>{
  PythonShell.runString('import os; print(os.getcwd());',options,function(err,result){
    if (err) throw err;
    event.sender.send("return_data",result)
  })
})

ipcMain.handle('showexecute', async (event,data)=>{
  PythonShell.runString('import sys; print(sys.executable);',options,function(err,result){
    if (err) throw err;
    event.sender.send("return_data1",result)
  })
})


6.アプリをビルドする。

npm run make

7.参考

こちらの記事を参考にしました。

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