As mentioned, Django is a multitasking and sophisticated counterpart to Flask. Flask is less complicated but does less, and Django has greater functionality at the price of greater complexity. For example, Django comes equipped with ORM (object-relational mapping), which allows the framework to convert data between incompatible type systems and languages. Flask does not come stocked with ORM and requires the developer to add it manually. Another example is Django’s preset validators for HTML forms to prevent errored data from entering a server. Flask requires an additional module to perform HTML form validation.

In a Flask vs Django fight, Flask would be well out of its weight class. The Flask framework is ideal for small projects, whereas Django is ideal for a project with plenty of web apps. The most staggering difference between the two frameworks is the lines of code in each. Flask uses roughly 29,000 lines, whereas Django has just about 290,000 lines of code.

With 10 times less code to sift through, Flask can be a much more suitable framework for those new to web development. Also, the benefit of manually adding functionality and applications makes Flask an excellent practice tool for beginners. It is much more convenient to observe the source code to understand what is happening behind the computer screen when there are far fewer lines of code.

Another significant difference is security. With Flask, additional software must be added to introduce more functionality. This can threaten the site’s safety with the inclusion of third-party modules, meaning the added software was written by neither you nor the Python developers.

In Django, the functions that a third-party module adds to Flask are already implemented, reducing the security risk that comes with supplementary modules. These modules are open-source and therefore more vulnerable to hacking and exploitation. These plugins increase the serviceability of the website at the expense of hindering its ability to remain a closed system.

Flask:

Django: