flask_app_debug.py

from flask import Flask
from flask import render_template
from flask import url_for, redirect
import threading
import subprocess

app = Flask(__name__)

@app.route('/debug/<path:path>', methods=['GET', 'POST'])
def dencoder(path):

    try:
        # return render_template('rendering_animation.html')
        #return "harrrrr"
        print("starting process")
        commands = ["py3", "semi_process.py",  "8"]
        th = Ck_Thread(commands)
        th.start()

        #return redirect(url_for('static', filename='rendering_animation.html'))
        print("process started, returning flow")
        return "seems to work!"

    except:
        return "try that again!"


class Ck_Thread(threading.Thread):
    def __init__(self, commands):
        self.commands = commands
        threading.Thread.__init__(self)

    def run(self):
        print("doing script")
        p = subprocess.Popen(self.commands, 
                        stdout=subprocess.PIPE, 
                        stderr=subprocess.STDOUT, 
                        shell=True).communicate()
        print("ended scripts")


if __name__ == '__main__':
    app.run() # host='0.0.0.0')