Chapter 22: Advanced Python Programming - Using the Pillow Library to Edit Images
22.1 Introduction Image processing is a common requirement in many Python applications, including automation, web development, and data science. The Pillow library—an easy-to-use fork of the Python Imaging Library (PIL)—offers powerful tools for image manipulation such as resizing, cropping, filtering, and format conversion. This chapter provides a practical introduction to Pillow, explaining its installation, basic operations, and advanced image editing techniques with code examples. 22.2 Installing Pillow To install Pillow, use the Python package installer: pip install Pillow You can now import the library using: from PIL import Image 22.3 Opening and Displaying Images Opening an Image from PIL import Image img = Image.open("example.jpg") img.show() Getting Image Information print(img.format) # JPEG, PNG, etc. print(img.size) # (width, height) print(img.mode) # RGB, L (grayscale), etc. 22.4 Saving Images You can save an i...