Planets/app.py

import os
from flask import Flask, render_template, send_file
from planets import createRandomPlanet

app = Flask(__name__)

IMG_FOLDER = os.path.join('static', 'IMG')
app.config['UPLOAD_FOLDER'] = IMG_FOLDER

@app.route('/')
def index():
    planet = os.path.join(app.config['UPLOAD_FOLDER'], 'planet.png')
    return render_template('index.html', planet=planet)

@app.route('/<seed>')
def hello(seed):
    createRandomPlanet(seed)
    planet = os.path.join(app.config['UPLOAD_FOLDER'], 'planet.png')
    return send_file(planet)

if __name__=='__main__':
    app.run(debug=True, host='0.0.0.0')