ParseError

[renanrosalojasmm]

I am getting the following issue:

at PythonShell.parseError (C:\Users\renan.rosa\Documents\Projetos\Biometria Facial\Servidor\node_modules\python-shell\index.js:190:17)
at terminateIfNeeded (C:\Users\renan.rosa\Documents\Projetos\Biometria Facial\Servidor\node_modules\python-shell\index.js:98:28)
at ChildProcess. (C:\Users\renan.rosa\Documents\Projetos\Biometria Facial\Servidor\node_modules\python-shell\index.js:88:9)
at ChildProcess.emit (events.js:159:13)
at Process.ChildProcess._handle.onexit (internal/child_process.js:209:12)

This error is very unclear to me, It is not telling the exact problem.

[Almenon]

That is not the entire exception log - can you post it in full?

…

On Wed, Mar 14, 2018, 11:33 AM lojasmm-renanrosa ***@***.***> wrote: I am getting the following issue: at PythonShell.parseError (C:\Users\renan.rosa\Documents\Projetos\Biometria Facial\Servidor\node_modules\python-shell\index.js:190:17) at terminateIfNeeded (C:\Users\renan.rosa\Documents\Projetos\Biometria Facial\Servidor\node_modules\python-shell\index.js:98:28) at ChildProcess. (C:\Users\renan.rosa\Documents\Projetos\Biometria Facial\Servidor\node_modules\python-shell\index.js:88:9) at ChildProcess.emit (events.js:159:13) at Process.ChildProcess._handle.onexit (internal/child_process.js:209:12) This error is very unclear to me, It is not telling the exact problem. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#113>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AMeZhXJ2RZqPENXC7h-3ZHjaO7BuFvvyks5teWKEgaJpZM4Sq9mM> .

[adrian-mei]

Error Message:

/Users/adrian/Documents/testing/nodejs_restapi/api/controllers/s2pController.js:68
        if (err) throw err;

                 ^

Error: Using TensorFlow backend.

    at PythonShell.parseError (/Users/adrian/Documents/testing/nodejs_restapi/node_modules/python-shell/index.js:191:17)
    at terminateIfNeeded (/Users/adrian/Documents/testing/nodejs_restapi/node_modules/python-shell/index.js:98:28)
    at ChildProcess.<anonymous> (/Users/adrian/Documents/testing/nodejs_restapi/node_modules/python-shell/index.js:89:9)
    at ChildProcess.emit (events.js:180:13)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:209:12)

How I use the PythonShell:

exports.create_a_task = function(req, res) {
  upload(req, res, function (err) {
      if (err) {
          // An error occurred when uploading
      }
      res.json({
          success: true,
          message: 'Image uploaded!',
          path: req.file.path, 
      });

      // --------------- testing-------------------
      // Python scripts
      var PythonShell = require('python-shell');
      var pyshell = new PythonShell('s2p/ai.py');
      // sends a message to the Python script via stdin
      //pyshell.send(req.file.path);

      pyshell.on('message', function (message) {
        // received a message sent from the Python script (a simple "print" statement)
        console.log(message);
      });

      // end the input stream and allow the process to exit
      pyshell.end(function (err,code,signal) {
        if (err) throw err;
        console.log('finished');
      });
      // -----------------end testing---------------------
  })
};

What I am trying to do:
I want to run my python script whenever there is a POST request. Within the python script, I am importing tensorflow, keras and ML models.

[san-j-vig]

Python warnings are also treated as errors which haults the execution. So to overcome this:-

In node_modules/python-shell/index.js, on line 72, you'll find this function
this.stderr.on('data', function (data) {
errorData += ''+data;
});

Change this to:
this.stderr.on('data', function (data) {
//errorData += ''+data; <--- Comment this line
console.log("Python Error: ", data); <--- Add this line (optional) so that you can atleast see all errors.
});

It will prevent your application from haulting due to tensorflow warnings thrown by python. You can also modify this function just to bypass tensorflow warnings so that other unexpected errors can report to python-shell.

[Almenon]

no response from OP - maybe sanjayvig's suggestion worked.

Thanks @sanjayvig