The idea that we should replace Django with Flask comes up from time to time: "No! This is a really shit idea":
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"The true comparison of these web frameworks depends on your project's needs. Are you building a traditional web application that connects to a database, requires CRUD (Create-Read-Update-Delete) functionality, and user authentication? If yes, Django has built-in solutions for all of these needs. By comparison, Flask requires installing multiple third-party libraries: Flask-SQLAlchemy to connect to the database, Flask-Migrate to manage database migrations, Flask-WTF and WTForms for forms, Flask-Login for user authentication, FLask-Mail for email support, Flask-Security for security features, Flask-Admin for an admin interface to manage application data, Flask-Caching for caching support, Flask-BCrypt for password hashing and so on."
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+
"The true comparison of these web frameworks depends on your project's needs. Are you building a traditional web application that connects to a database, requires CRUD (Create-Read-Update-Delete) functionality, and user authentication? +
"The power of Django is that you don't have to worry about any of these things. They are included, tested, and supported by the community. For Flask, the third-party libraries are not as tightly integrated and require more manual installation by the developer. This affords greater flexibility but also requires more programmer expertise."
- flask-vs-django.
For an updated (June 24, 2025) comparison, see Choosing the Best Python Web Framework