Differentiate between dev and prod

tharanor-letter.py

@@ -2,7 +2,6 @@ from flask import Flask, render_template, request, jsonify
 from werkzeug.utils import secure_filename
 from pathlib import Path
 from argparse import ArgumentParser
-from warnings import warn
 import sqlite3
 
 app = Flask(__name__)
@@ -160,6 +159,6 @@ if __name__ == '__main__':
     parser.add_argument('-a', '--address', default='127.0.0.1', help="Host IP address to bind to (default: 127.0.0.1)")
     parser.add_argument('-p', '--port', default='5000', help="Port to bind to (default: 5000)")
     args = parser.parse_args()
-    warn("Falls diese Umgebung produktiv ist, nutze besser:\n"
+    print("Falls diese Umgebung produktiv ist, nutze besser:\n"
          f"gunicorn --bind {args.address}:{args.port} --log-level tharanor-letter.py:app")
     app.run(debug=True, host=args.address, port=args.port)