Tuple

Just as strings are a sequence of characters, tuples are a sequence of objects. This makes their use far more general.

You can set a tuple by separating the objects using commas. For example:

t = 1, 2, 3, 'a', 'b', 'c'

print(t)

(1, 2, 3, 'a', 'b', 'c')

This is called tuple packing.

You can also put brackets around the objects, which is useful if you need to instance a tuple and use it in the same line (for example as a function argument):

print(('a', 1, 'b', 2, 'c', 3))

('a', 1, 'b', 2, 'c', 3)

Like strings, tuples can be indexed and sliced:

print('Index 3:', t[3])
print('Slice from index 3:', t[3:])

Index 3: a
Slice from index 3: ('a', 'b', 'c')

Tuples are also immutable (like strings):

t[2] = 5

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-5-5255d5d095a8> in <module>
----> 1 t[2] = 5

TypeError: 'tuple' object does not support item assignment

You can unpack a tuple into multiple variables, just like you can pack multiple values into a tuple:

t = (1, 2, 3)
print('t is ', t)

x, y, z = t
print('x is', x) 
print('y is', y)
print('z is', z)

t is  (1, 2, 3)
x is 1
y is 2
z is 3