COMPUTER SCIENCE: CHAPTER 8: STRINGS

Text is ubiquitous in computing. Names, addresses, messages, passwords, file contents, web pages—virtually all human-readable information involves text. Yet text isn't stored as humans see it; internally, computers represent each character as numeric codes. Understanding how to work with strings—sequences of characters—is fundamental to programming. Python provides extensive string capabilities: creating strings, extracting parts, modifying them, searching within them, and formatting them for display. Strings are immutable in Python, meaning once created, they cannot be directly modified—operations on strings create new strings. Understanding string operations enables tasks from simple text display to complex text processing like analyzing documents or validating user input. This chapter explores string creation and representation, indexing and slicing, string operations and methods, string traversal, and practical text manipulation techniques.

---