Strings and String Manipulation: Mastering Text Processing in Python
Covers Python strings from the ground up: single and double quote syntax, triple-quoted multi-line strings, concatenation, and repetition. Demonstrates character access via indexing and slicing, then tours the most useful built-in methods including lower, upper, strip, replace, split, and join. Explains all three string formatting styles — f-strings, str.format(), and %-formatting — and covers escape characters. A text analyzer exercise counts characters, words, and unique words; a password generator challenge applies the random module to build strings meeting specific criteria.