app.root_path contains the root path for the application. This is determined based on the name passed to Flask. Typically, you should use the instance path (app.instance_path) not the root path, as the instance path will not be within the package code. filename = os.path.join(app.instance_path, ‘my_folder’, ‘my_file.txt’)
There is no app.stop() if that is what you are looking for, however using module atexit you can do something similar: https://docs.python.org/2/library/atexit.html Consider this: import atexit #defining function to run on shutdown def close_running_threads(): for thread in the_threads: thread.join() print “Threads complete, ready to finish” #Register the function to be called on exit atexit.register(close_running_threads) #start … Read more
Your (debug) logging messages are getting suppressed by Flask as you’re not running in debug mode. If you set the following flag to True, your code will work. app.run(debug=True) The messages will now appear as expected. BennyE$ python3 stackoverflow.py 2015-03-08 12:04:04,650 ERROR: firs test message… [in stackoverflow.py:31] * Running on http://0.0.0.0:5000/ (Press CTRL+C to quit) … Read more
UPDATED, 2022-12-08 Extending the ModelSchema from marshmallow-sqlalchemy instead of Flask-Marshmallow you can use the load method, which is defined like this: load(data, *, session=None, instance=None, transient=False, **kwargs) Putting that to use, it should look like that (or similar query): node_schema.load(json_data, session= current_app.session, instance=Node().query.get(node_id)) And if you want to load without all required fields of Model, … Read more
Finally got answer from Flask documentation, we can get cursor from db object using, from sqlalchemy import create_engine engine = create_engine(‘your_connection_string’) connection = engine.raw_connection() cursor = connection.cursor()
Celery and RQ is overengineering for simple task. Take a look at this docs – https://docs.python.org/3/library/concurrent.futures.html Also check example, how to run long-running jobs in background for Flask app – https://stackoverflow.com/a/39008301/5569578
A better solution…. You can use startswith directly in field because field is a python String. {% if field.startswith(‘i-‘) %} More, you can use any String function, including str.endswith(), for example.
I tried something, and it seems to work. I put preload_app = True in my gunicorn.conf and now the lock seems to be shared. I am still looking into exactly what’s happening here but for now this is good enough, YMMV.
Installing older version of eventlet solved the problem: pip install eventlet==0.30.2 EDIT: you can use the newer versions like this: pip install eventlet==0.33.0 https://github.com/benoitc/gunicorn/archive/refs/heads/master.zip#egg=gunicorn==20.1.0 see: https://github.com/benoitc/gunicorn/pull/2581#issuecomment-994198667 thank you @jmunsch
I had the same problem. It is because Werkzeug 3.0.0 was released and Flask doesn’t specify the dependency correctly (requirements says Werkzeug>=2.2.0). This is why, Werkzeug 3.0.0 is still installed and Flask 2.2.2 isn’t made for Werkzeug 3.0.0. Solution: Just set a fix version for Werkzeug such as Werkzeug==2.2.2 in your requirements.txt and it should … Read more