Tuples and Lists
list =  tuple = ()
You can use the
type() object to see what it is your working with.
The key difference being:
Lists are mutable
Tuples are immutable
You can modify a list once declared but not a tuple.
Since lists are mutable they cannot be used in Dictionaries.
Since Tuples are mutable they cannot be copied.
If you try to copy a tuple it will simply return itself. If you run
tuple(tuple_name), it will immediately return itself:
names = (‘Nicholas’, ‘Michelle’, ‘Alex’) copyNames = tuple(names) print(names is copyNames)
The two are the same.
list(list_name) requires copying of all data to a new list, for example:
names = [‘Nicholas’, ‘Michelle’, ‘Alex’] copyNames = list(names) print(names is copyNames)
Memory is allocated to tuples in larger blocks with a low overhead, because they are immutable. Tuples will use less memory than a dynamic list. A list has a variable size, a tuple is allocated a fixed size.
- Dictionaries are similar to arrays. They use keys and values to manage data (rather than indexes). Each value can be accessed by calling it’s key. A value can be any object (strings, ints, lists etc). Only immutable object can be written to a dictionary. Use tuples, not lists. (Ref: Tuples and Lists)