There are better reasons to prefer tuples over lists when mutation is not needed, namely that it prevents unexpected mutation performed by other code to which r

There are better reasons to prefer tuples over lists when mutation is not needed, namely that it prevents unexpected mutation performed by other code to which references have been "leaked". This makes code easier to read as a result because such possibilities can be ruled out in the mind of the reader. More generally, mutable objects encourage unnecessarily side-effecty code.