flaskr | Example code for the 'Flaskr ' Flask app by Armin Ronacher | Web Site library

I am new to Flask and trying to build a simple application with a MySQL database. However, I prefer not to use SQLAlchemy. Instead, I would like to use mysql.connector and direct SQL statements to SELECT, INSERT, UPDATE or DELETE from the database.

I have a question: is it mandatory to define the MySQL database connection/parameters inside the factory function? The Flask tutorial shows a SQLite database being defined inside the factory function, create_app().

Sample tutorial code:

I have deployed Flask app successfully but I am getting application error when I click on the herokuapp link. When I checked logs it shows something like this

I am new to Flask and currently exploring the official tutorial available in https://flask.palletsprojects.com/en/2.0.x/tutorial/factory/.

The example creates a blog based on a SQLite database. The database is defined in the following statement:

I want to create comment section for my page but instead of displaying comments for specific post, the comments are showing for all posts. Let's say if any user commented on a specific post so I want that comments for that post only. What I am getting is that comments for all posts. Let me show you code

schema.sql

CONTEXT. Python 3.9.1, Flask 2.0.1 and Windows 10

WHAT I WANT TO DO. Call a module located inside a custom package.

TROUBLE. No matter what I do, the console insists on telling me: ModuleNotFoundError: No module named 'my_package'

WHAT AM I DOING.

I am following the official Flask tutorial https://flask.palletsprojects.com/en/2.0.x/tutorial/index.html. Therefore, the structure of the project is basically this (with slight changes from the tutorial):

I would like to start my Flask application with just flask run with these config informations: host = 0.0.0.0, port = 443 & cert = adhoc. If I wanted to run this through command I would have executed the code below instead:

flask run --host=0.0.0.0 --port=443 --cert=adhoc

But then I have to tell all my group mates and my professor to do it too when they check on my code. So I tried to work around this by using the code below in my app:

flask app gives this error on Heroku. it works fine on localhost

I've been working on a Udacity course on unit testing flask application.

All the files needed are in this Github link, and we will just focus on the "backend" directory. This directory contains the flaskr directory and two files - one of which is the test_flaskr.py, where there is this test_delete_book method that i am trying to fix.

The way this test_delete_book test method is coded currently it will only pass the FIRST test (and will fail in succeeding tests). So what I am trying to do is to get the value of the 'id' key of the last Book entry, and pass it to the delete book API . There is another test_create_new_book method in the same test file test_flaskr.py that ensures the Book table will never run out of data (thus the test_delete_book will never fail after my code change.

By the way, here is the link to the Book table structure.

Here is my code for the test_delete_book (emphasis on just two lines - lines 03 and 04):

Currently referring to this tutorial. https://flask.palletsprojects.com/en/1.1.x/tutorial/factory/

The directory folder is as below.

init.py ->