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| Developer(s) | Armin Ronacher |
|---|---|
| Initial release | April 1, 2010 |
| Stable release | 3.0.3[1] 
/ 7 April 2024 |
| Repository | github |
| Written in | Python |
| Type | Web framework |
| License | BSD 3-clause license |
| Website | palletsprojects |
Flask is a micro web framework written in Python. It is classified as a microframework because it does not require particular tools or libraries.[2] It has no database abstraction layer, form validation, or any other components where pre-existing third-party libraries provide common functions. However, Flask supports extensions that can add application features as if they were implemented in Flask itself. Extensions exist for object-relational mappers, form validation, upload handling, various open authentication technologies and several common framework related tools.[3]
Applications that use the Flask framework include Pinterest and LinkedIn.[4][5]
- ^ "Release 3.0.3". 7 April 2024. Retrieved 23 April 2024.
- ^ "Flask Foreword". Archived from the original on 2017-11-17.
- ^ "Flask Extensions". Archived from the original on 2018-05-17.
- ^ What challenges has Pinterest encountered with Flask?
- ^ Rachel Sanders: Developing Flask Extensions - PyCon 2014