Flask provides simplicity, flexibility and fine-grained control. It is unopinionated (it lets you decide how you want to implement things). 

Django provides an all-inclusive experience: you get an admin panel, database interfaces, an ORM, and directory structure for your apps and projects out of the box

University of Michigan - Ann Arbor

Flask is a Python microframework for web development, focused on giving developers complete control of design decisions through its extensibility. Flask is open source, and has extensive documentation

Flask (Web Framework)

https://flask.palletsprojects.com/en/1.1.x/

Flask Documentation

https://flask.palletsprojects.com/en/1.1.x/tutorial/

Flask Tutorial

Django vs Flask

Being a microframework, a flask application is able to be written in something as simple as a single file, for example:
```python
from flask import Flask

app = Flask(__name__)

@app.route('/')
def hello():
    return 'Hello, World!'
```

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