'static' endpoint name: url_for('static', filename='style.css') The file has to be stored on the filesystem as static/style.css. Rendering Templates Generating HTML from within Python is not fun, and actually transmit your files at all. Uploaded files are stored in memory or at a temporary location on the filesystem. You can access those files by looking at the files attribute on the request object. Each uploaded x/datastructures/#werkzeug.datastructures.FileStorage.save] method that allows you to store that file on the filesystem of the server. Here is a simple example showing how that works: from flask import request @app

'static' endpoint name: url_for('static', filename='style.css') The file has to be stored on the filesystem as static/style.css. 1.4.6 Rendering Templates Generating HTML from within Python is not fun transmit your files at all. Uploaded files are stored in memory or at a temporary location on the filesystem. You can access those files by looking at the files attribute on the request object. Each uploaded standard Python file object, but it also has a save() method that allows you to store that file on the filesystem of the server. Here is a simple example showing how that works: from flask import request @app