String Manipulation

String Manipulation\n\nStrings are immutable sequences of Unicode characters. Python offers powerful slicing, formatting, and a rich set of methods.\n\npython\nmsg = 'Hello, World!'\nprint(msg.upper()) # HELLO, WORLD!\nprint(msg[7:12]) # World\n\n# f‑strings (Python 3.6+) for clean interpolation\nname = 'Alice'\nprint(f'Hi, {name}!')\n\n\nBecause strings are immutable, operations like upper() return a new string rather than modifying the original.\n