Most modern web applications support uploading and downloading files. Whether you're updating your profile picture, uploading documents, or downloading reports, handling files is a must-have feature. In this article,  we’ll explore how to build a File Upload and Download API using Python and Flask , a lightweight web framework that's perfect for beginners and small projects. Step 1: Set Up Your Project Environment Before writing any code, make sure Flask is installed on your system. pip install flask Create a new file named app.py . This will be your main application file. Step 2: Create a Basic Flask App Structure Let’s start with the foundational setup of a Flask app. from flask import Flask, request, send_from_directory # Import necessary Flask modules import os # Import os for file system operations app = Flask(__name__) # Initialize the Flask app # Define a folder where uploaded files will be stored UPLOAD_FOLDER = 'uploads' # Create the uploads d...