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The Pallets organization develops and supports Flask and the libraries it uses. In order to grow the community of contributors and users, and allow the maintainers to devote more time to the projects, please donate today. See our detailed contributing documentation for many ways to contribute, including reporting issues, requesting features, asking or answering questions, and making PRs. ... Download the file for your platform.

      » pip install Flask

Published Feb 19, 2026

Version 3.1.3

Repository https://github.com/pallets/flask/

Flask

Python web framework

flask.palletsprojects.com

Flask is a micro web framework written in Python. It is classified as a microframework because it does not require particular tools or libraries. It has no database abstraction layer, form validation, … Wikipedia

Factsheet

Developer Armin Ronacher

Initial release 1 April 2010; 16 years ago (2010-04-01)

Stable release 3.1.3
/ 19 February 2026; 47 days ago (19 February 2026)

Factsheet

Developer Armin Ronacher

Initial release 1 April 2010; 16 years ago (2010-04-01)

Stable release 3.1.3
/ 19 February 2026; 47 days ago (19 February 2026)

SourceForge

sourceforge.net › projects › flask.mirror

Flask download | SourceForge.net

Flask

Being a “micro” framework does not mean that your whole web application must fit into a single Python file (although it can) or that it be limited; rather it means that Flask aims to keep the core simple but extensible. Flask offers suggestions, but it won’t make any decisions for you ... Flask is a lightweight WSGI web application framework designed to help developers get started with their web applications quickly and easily with the ability to scale up to complex applications. Being a “micro” framework does not mean that your whole web application must fit into a single Python file (althoug

Rating: 5

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flask.palletsprojects.com › en › stable › installation

Installation — Flask Documentation (3.1.x)

These distributions will be installed automatically when installing Flask. Werkzeug implements WSGI, the standard Python interface between applications and servers.

Flask

flask.palletsprojects.com

Welcome to Flask — Flask Documentation (3.1.x)

Get started with Installation and then get an overview with the Quickstart. There is also a more detailed Tutorial that shows how to create a small but complete application with Flask. Common patterns are described in the Patterns for Flask section.

GitHub

github.com › pallets › flask

GitHub - pallets/flask: The Python micro framework for building web applications. · GitHub

# save this as app.py from flask import Flask app = Flask(__name__) @app.route("/") def hello(): return "Hello, World!"

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PyPI

pypi.org › project › flask-app

flask-app · PyPI

Download the file for your platform. If you're not sure which to choose, learn more about installing packages. ... Filter files by name, interpreter, ABI, and platform. If you're not sure about the file name format, learn more about wheel file names. ... Details for the file flask-app-1.0.1.tar.gz.

      » pip install flask-app

Published Jan 28, 2020

Version 1.0.1

Repository https://github.com/kimbugp/flask_app

Google Play

play.google.com › store › apps › details

Flask Web Framework - Apps on Google Play

Downloads · Everyone · info · Install · Share · Add to wishlist · arrow_forward · This is an app that allows you to learn Flask web application from start to finish offline. Flask is a micro web framework written in Python. It is classified as a microframework because it does not require particular tools or libraries.

Rating: 3.4 - 57 votes

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PhoenixNAP

phoenixnap.com › home › kb › devops and development › how to install flask on linux, windows, and macos

How to Install Flask on Linux, Windows, and macOS

December 11, 2025 - Learn how to install Flask on any operating system and how to test the installation with a basic web application.

Stack Overflow

stackoverflow.com › questions › 24577349 › flask-download-a-file

python - Flask Download a File - Stack Overflow

Top answer

1 of 5

107

You need to make sure that the value you pass to the directory argument is an absolute path, corrected for the current location of your application.

The best way to do this is to configure UPLOAD_FOLDER as a relative path (no leading slash), then make it absolute by prepending current_app.root_path:

@app.route('/uploads/<path:filename>', methods=['GET', 'POST'])
def download(filename):
    uploads = os.path.join(current_app.root_path, app.config['UPLOAD_FOLDER'])
    return send_from_directory(uploads, filename)

It is important to reiterate that UPLOAD_FOLDER must be relative for this to work, e.g. not start with a /.

A relative path could work but relies too much on the current working directory being set to the place where your Flask code lives. This may not always be the case.

2 of 5

101

To download file on flask call. File name is Examples.pdf When I am hitting 127.0.0.1:5000/download it should get download.

Example:

from flask import Flask
from flask import send_file
app = Flask(__name__)

@app.route('/download')
def downloadFile ():
    #For windows you need to use drive name [ex: F:/Example.pdf]
    path = "/Examples.pdf"
    return send_file(path, as_attachment=True)

if __name__ == '__main__':
    app.run(port=5000,debug=True)

GitHub

github.com › Muneer320 › Flask-Download-It

GitHub - Muneer320/Flask-Download-It: Hey there! wanna download any video from Internet? Try out "Download It". It's a completely free tool to download any video over the Internet. Just have a try ;) · GitHub

git clone https://github.com/Muneer320/Flask-Download-It.git · Navigate to the Directory: Move into the project folder: ... Configure Host and Port: The application is set to be hosted online by default. To run it locally, adjust the host and port as needed.

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GeeksforGeeks

geeksforgeeks.org › installation guide › how-to-install-flask-in-windows

Flask Basics & Installation - GeeksforGeeks

2 weeks ago - After installation, to confirm that Flask has been installed correctly. Open the Python shell and try importing Flask: ... If no error appears, Flask is installed successfully.

JetBrains

jetbrains.com › help › pycharm › creating-web-application-with-flask.html

Creating Web Applications with Flask | PyCharm Documentation

Now install all the packages required for the MeteoMaster application. The easiest way to do that is to use project dependencies (refer to Use requirements.txt). Right-click the project root and select New | File, then specify requirements.txt as the filename and add the following list of the dependencies to it. blinker==1.7.0 click==8.1.7 contourpy==1.2.0 cycler==0.12.1 flask==3.0.0 fonttools==4.47.0 itsdangerous==2.1.2 jinja2==3.1.2 kiwisolver==1.4.5 markupsafe==2.1.3 matplotlib==3.8.2 numpy==1.26.2 packaging==23.2 pillow==10.2.0 pyparsing==3.1.1 python-dateutil==2.8.2 six==1.16.0 sqlalchemy==2.0.24 typing-extensions==4.9.0 werkzeug==3.0.1

Google Play

play.google.com › store › apps › details

flask - Apps on Google Play

July 14, 2024 - Downloads · Mature 17+ info · Install · Share · Add to wishlist · arrow_forward · Flask is the first App delivering the finest Cocktails directly to your door! Ready made, ready to sip, no mixing needed cocktails delivered at the office or your home. Updated on ·

reddit.com › r/flask › flask working with downloads ..

r/flask on Reddit: Flask working with downloads ..

June 4, 2023 -

Hi all ,

Newish to working with web and flask development . I come from doing lots of GUI development, with Tkinter and others . I have some functions that generate .csv files and then place them in a folder, usually have a file dialog that request for the user to choose . Typically I’ll save these in a config.ini file for desktop apps.

How can I do something like there in flask where I have a wtform that has the user choose where to save .csv files and on submit call my function to generate csv to that said folder , or maybe the users default download folder ?

And maybe implement some sort of progress / loading bar as well freezing the page while the function is running .

Any advice is appreciated and thanks in advance !

Top answer

1 of 1

The file download location is handled by the client's web browser, outside of Flask. So, Flask has no capability to interact directly with the client's filesystem. To do a progress bar setup, you'd first need to track that progress in a database and periodically update the record with the task's status. Then, you could create a new route that simply checks the database and returns the stored progress value. You can use Javascript's fetch or Jquery's $.get() to make the call to this route, and then update the progress bar with the result.

Medium

medium.com › @01one › create-the-simplest-static-file-download-server-with-python-flask-bd6ea3950a56

Create the simplest static file download server with python flask | by Mashiur Rahman | Medium

September 10, 2025 - # app.py from flask import Flask, send_from_directory app = Flask(__name__) @app.route('/<filename>') def download_file(filename): # The directory where the files are located directory = 'static' # Flask's send_from_directory to send the file to the client return send_from_directory(directory, filename, as_attachment=True) if __name__ == '__main__': app.run(host='0.0.0.0', port=5000, debug=True)

Medium

medium.com › @mohitdubey_83162 › python-building-a-file-upload-and-download-system-with-python-flask-69e19e2c83af

[Python] Building a File Upload and Download System with Python Flask | by Mohit Dubey | Medium

September 24, 2024 - Content Type and Headers: send_from_directory handles the necessary content type and headers for file downloads, ensuring proper browser behavior. If your Flask application is running on localhost:5000 and you want to download a file named report.pdf, the command would be:

GeeksforGeeks

geeksforgeeks.org › python › flask-creating-first-simple-application

Flask - Creating First Simple Application - GeeksforGeeks

January 7, 2026 - This command installs Flask along with the required supporting libraries. ... Create a new Python file named app.py.

GeeksforGeeks

geeksforgeeks.org › how-to-install-flask-in-windows

How to Install Flask in Windows? | GeeksforGeeks

June 9, 2024 - Flask provides a built-in way to serve these static files using the /static directory.This guide will show how to serve different types of static files in a Flask web applic ... This article will go over how to upload and download files using a Flask database using Python.

Visual Studio Code

code.visualstudio.com › docs › python › tutorial-flask

Flask Tutorial in Visual Studio Code

November 3, 2021 - Install a version of Python 3 (for which this tutorial is written). Options include: (All operating systems) A download from python.org; typically use the Download button that appears ...