Python: Tuple
Tuple is like a List , except that it cannot be changed. The slot values cannot change, the length cannot change.
Create Tuple by Literal Expression
()- Empty tuple.
(a,)- Tuple with 1 item a.
(a, b, c)- Tuple with item a, b, c.
a,- Tuple with 1 item a.
a, b, c- Tuple with item a, b, c.
Convert Iterable to Tuple
tuple(iterable)-
Return a new tuple with items of iterable.
x = tuple([3, 4, 5]) y = 3, 4, 5 print(x) # (3, 4, 5) print(y) # (3, 4, 5) print(x == y) # True
Tuple Cannot Change
Tuple cannot be changed, not item, and not length.
# tuple cannot be changed xx = (3, 4, 5) xx[0] = 9 # TypeError: 'tuple' object does not support item assignment
Nested Tuple and List
List and tuple can contain mixed datatypes, and nested in anyway.
# list and tuple can contain mixed datatypes, and nested in anyway xx = [3, "4", [11, "12"], ("a", 2), 5] yy = (3, "4", [11, "12"], ("a", 2), 5)