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Flask

Flask is a python web framework.

WSGI

Web Server Gateway Interface

Is a protocol of communication used so the request from the webserver can reach the web app, in this case Flask.

Jinja 2

It is a web template engine, that can combine templates with data sources. A data source can be for example:

  • CSV Sheet
  • SQL Database
  • NoSQL Database
  • Machine Learning model

Those below are astral/uv script dependencies, it can be define inside script file. You can run it like uv run my_script.py then they will be automatically installed

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# /// script
# requires-python = ">=3.13"
# dependencies = [
#     "flask",
# ]
# ///

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from flask import Flask, render_template

app = Flask(__name__)  # WSGI compliant application instance


@app.route("/")
def home():
    return render_template("index.html")


@app.route("/health")
def health():
    return {"status": "ok"}


if __name__ == "__main__":
    app.run(
        debug=True,  # Enables hot reload if True
    )