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Tuple Data Type in Python

Tuples in Python are an ordered collection of different data types.The items in the tuples are separated by commas (,).

  • Tuples are immutable objects.
  • Tuples are iterable objects.
  • Tuples in Python can be indexed/subscripted.
  • In forward indexing, the first element of tuple has index 0.
  • In backward indexing, the last element of tuple has index –

Data Visualize

Create empty tuple:

Python 3.8.4 (tags/v3.8.2:7b3ddb59, Feb 25 2020, 23:03:10) [MSC v.1916 64 bit (AMD64)] on win32

>>> data = ()
>>> print(data)
()
>>> print(type(data))

>>> print(len(data))
0

Create non-empty tuple:

This way to create non-tuple in Python

Python 3.8.4 (tags/v3.8.2:7b3ddb59, Feb 25 2020, 23:03:10) [MSC v.1916 64 bit (AMD64)] on win32

>>> roll = (101,)
>>> print(roll)
(101,)
>>> print(type(roll))

>>> data = (101,'ankita',95.6,('P','C','M'),[96,91,93])
>>> print(data)
(101, 'ankita', 95.6, ('P', 'C', 'M'), [96, 91, 93])
>>> print(type(data))

>>> print(len(data))
5

Tuple Indexing:

Used to select the character at a particular index/position.

Syntax: object[index]

Backward Indexing -5 -4 -3 -2 -1
101 ankita’ 95.6 (‘P’,’C’,’M’) [96, 91, 93]
Forward Indexing 0 1 2 3 4 
Python 3.8.4 (tags/v3.8.2:7b3ddb59, Feb 25 2020, 23:03:10) [MSC v.1916 64 bit (AMD64)] on win32

>>> data = (101,'ankita',95.6,('P','C','M'),[96,91,93])
>>> print(data)
(101, 'ankita', 95.6, ('P', 'C', 'M'), [96, 91, 93])
>>> print(data[3])
('P', 'C', 'M')
>>> print(data[-1])
[96, 91, 93]

Tuple Index slicing:

Process to select a subset of an entire tuple, Index slicing return view of original tuple.

Syntax: object[start : stop : stride(step)]

start (optional) starting index value, the default is 0(in fwd indexing)
stop (optional) ending index value, is not included in the generated sequence, default is len(object)(in fwd indexing)
step (optional) the difference between each item in the sequence, the default is 1(in fwd indexing) 
Python 3.8.4 (tags/v3.8.2:7b3vb59, Feb 25 2020, 23:03:10) [MSC v.1916 64 bit (AMD64)] on win32

>>> data = (101,'ankita',95.6,('P','C','M'),[96,91,93])
>>> print(data)
(101, 'ankita', 95.6, ('P', 'C', 'M'), [96, 91, 93])
>>> print(id(data))
2300730249680
>>> print(data[2:4])
(95.6, ('P', 'C', 'M'))
>>> print(id(data[2:4])
2300730249680
>>> print(data[-4:-1])
('ankita', 95.6, ('P', 'C', 'M'))
>>> print(data[-1::-1])
([96, 91, 93], ('P', 'C', 'M'), 95.6, 'ankita', 101)

Data Insertion

Insertion Tuple in run time is not possible because Tuple is immutable. we can just create the tuple as defined.

Python 3.8.4 (tags/v3.7.8:4b47a5b6ba, Jun 28 2020, 08:53:46) [MSC v.1916 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> t1=(1,2,3,4,"Hello",True)
>>> type(t1)

>>> print(t1)
(1, 2, 3, 4, 'Hello', True)
>>>

Data Deletion

Deletions in tuples are not allowed, just we can use del command to delete the whole tuple.

Python 3.8.4 (tags/v3.7.8:4b47a5b6ba, Jun 28 2020, 08:53:46) [MSC v.1916 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> t1=(1,2,3,4,5,"hello",34)
>>> t1.remove(2)
Traceback (most recent call last):
  File "", line 1, in 
AttributeError: 'tuple' object has no attribute 'remove'
>>> t1.clear()
Traceback (most recent call last):
  File "", line 1, in 
AttributeError: 'tuple' object has no attribute 'clear'
>>> del t1
>>> print(t1)
Traceback (most recent call last):
  File "", line 1, in 
NameError: name 't1' is not defined
>>>

Tuple Operations:

Operator Description
+ Used to join two tuples, known as tuple concatenation.
* Used to repeat the elements of tuple, known as tuple replication.
in not in Used to check the value is exist or not,
is is not Used to check the object address . 
Python 3.8.4 (tags/v3.8.2:7b3ds59, Feb 25 2020, 23:03:10) [MSC v.1916 64 bit (AMD64)] on win32

>>> data = (101,'ankita',95.6,('P','C','M'),[96,91,93])
>>> personal = (16,'F','Delhi')
>>> all = data + personal
>>> print(all)
(101, 'ankita', 95.6, ('P', 'C', 'M'), [96, 91, 93], 16, 'F', 'Delhi')
>>> print(personal*2)
(16, 'F', 'Delhi', 16, 'F', 'Delhi')
>>> print('ankit' in data)
False
>>> print([96,91,93] in data)
True
>>> print('ankit' not in data)
True
>>> own = (16,'F','Delhi')
>>> print(personal is own)
False
>>> print(personal is not own)
True

Python Tuple Methods:

Function Description
index(value, start=0, stop=len(object))
  • Return first index of value.
  • ValueError when value is not present.
count(value) Return number of occurence of the value in tuple. 
Python 3.8.4 (tags/v3.8.2:7b3cc59, Feb 25 2020, 23:03:10) [MSC v.1916 64 bit (AMD64)] on win32

>>> data = (101,'ankita',95.6,('P','C','M'),[96,91,93])
>>> print(data.index(95.6))
2
>>> print(data.count(95.6))
1

Built-in functions on Tuple:

Function Description
min(iterable, key=func) Return the smallest number of the given list.(only with int or float number)
max(iterable, key=func) Returns the biggest number of the given list.(only with int or float number)
sum(iterable, start=0) Returns the sum of the given list.(only with int or float number)
sorted((iterable, key=None, reverse=False) Returns the ascending sorted arrays .(only with int or float number) 
Python 3.8.4 (tags/v3.8.2:7b3acdb59, Feb 25 2020, 23:03:10) [MSC v.1916 64 bit (AMD64)] on win32
>>> marks = [68,92,78,88,65]
>>> print(min(marks))
65
>>> print(max(marks))
92
>>> print(sum(marks))
391
>>> print(sorted(marks))
[65, 68, 78, 88, 92]
>>> print(sorted(marks, reverse=True))
[92, 88, 78, 68, 65]
>>> subject = ['Phy','Chem','Maths','Eng','Hindi']
>>> print(sorted(marks, key=lambda marks:subject))
[68, 92, 78, 88, 65]

For further reference about lambda please refer this link “https://salesforcedrillers.com/learn-python/lambda-functions/“

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