There are several advantages.

One is performance: knowing that a string is immutable makes it easy to lay it out at construction time -- fixed and unchanging storage requirements. This is also one of the reasons for the distinction between tuples and lists.

The other is that strings in Python are considered as "elemental" as numbers. No amount of activity will change the value 8 to anything else, and in Python, no amount of activity will change the string "eight" to anything else.

CATEGORY: general

last updated 2 years ago by effbot #