create internal etl for people to upload data with python and flask

from flask import Flask, render_template, requestfrom werkzeug import secure_filenameapp = Flask(__name__)@app.route('/upload')def upload_file():   return render_template('upload.html')	@app.route('/uploader', methods = ['GET', 'POST'])def upload_file():   if request.method == 'POST':      f = request.files['file']      f.save(secure_filename(f.filename))      return 'file uploaded successfully'		if __name__ == '__main__':   app.run(debug = True)