Tuples in Python
Python Tuple is a collection of objects separated by commas. In some ways, a tuple is similar to a list in terms of indexing, nested objects, and repetition but a tuple is immutable, unlike lists which are mutable.
Creating Tuples in Python
To create a tuple we will use () operators.
Python
var = ("Geeks", "for", "Geeks")print(var) |
Output:
('Geeks', 'for', 'Geeks')Note: In case your generating a tuple with a single element, make sure to add a comma after the element.
Accessing Values in Tuples in Python
Method 1: Using Positive Index
Using square brackets we can get the values from tuples in Python.
Python3
var = ("Geeks", "for", "Geeks") print("Value in Var[0] = ", var[0])print("Value in Var[1] = ", var[1])print("Value in Var[2] = ", var[2]) |
Output:
Value in Var[0] = Geeks Value in Var[1] = for Value in Var[2] = Geeks
Method 2: Using Negative Index.
In the above methods, we use the positive index to access the value in Python, and here we will use -ve index within [].
Python3
var = ("Geeks", "for", "Geeks") print("Value in Var[-3] = ", var[-3])print("Value in Var[-2] = ", var[-2])print("Value in Var[-1] = ", var[-1]) |
Concatenation of Tuples in Python
To concatenate the Python tuple we will use plus operators(+).
Python
# Code for concatenating 2 tuples tuple1 = (0, 1, 2, 3)tuple2 = ('python', 'geek') # Concatenating above twoprint(tuple1 + tuple2) |
Output:
(0, 1, 2, 3, 'python', 'geek')
Nesting of Tuples in Python
Python
# Code for creating nested tuples tuple1 = (0, 1, 2, 3)tuple2 = ('python', 'geek')tuple3 = (tuple1, tuple2)print(tuple3) |
Output :
((0, 1, 2, 3), ('python', 'geek'))Repetition Tuples in Python
Python
# Code to create a tuple with repetition tuple3 = ('python',)*3print(tuple3) |
Output:
('python', 'python', 'python')Try the above without a comma and check. You will get tuple3 as a string ‘pythonpythonpython’.
Immutable Tuples in Python
Python
# code to test that tuples are immutable tuple1 = (0, 1, 2, 3)tuple1[0] = 4print(tuple1) |
Output:
Traceback (most recent call last):
File "e0eaddff843a8695575daec34506f126.py", line 3, in
tuple1[0]=4
TypeError: 'tuple' object does not support item assignmentSlicing Tuples in Python
Python
# code to test slicing tuple1 = (0 ,1, 2, 3)print(tuple1[1:])print(tuple1[::-1])print(tuple1[2:4]) |
Output:
(1, 2, 3) (3, 2, 1, 0) (2, 3)
Deleting a Tuple
Python
# Code for deleting a tuple tuple3 = ( 0, 1)del tuple3print(tuple3) |
Error:
Traceback (most recent call last):
File "d92694727db1dc9118a5250bf04dafbd.py", line 6, in <module>
print(tuple3)
NameError: name 'tuple3' is not definedOutput:
(0, 1)
Finding Length of a Tuple
Python
# Code for printing the length of a tuple tuple2 = ('python', 'geek')print(len(tuple2)) |
Output:
2
Converting list to a Tuple
Python
# Code for converting a list and a string into a tuple list1 = [0, 1, 2]print(tuple(list1))print(tuple('python')) # string 'python' |
Output:
(0, 1, 2)
('p', 'y', 't', 'h', 'o', 'n')Takes a single parameter which may be a list, string, set or even a dictionary( only keys are taken as elements) and converts them to a tuple.
Tuples in a loop
Python
# python code for creating tuples in a loop tup = ('geek',)n = 5 # Number of time loop runsfor i in range(int(n)): tup = (tup,) print(tup) |
Output:
(('geek',),)
((('geek',),),)
(((('geek',),),),)
((((('geek',),),),),)
(((((('geek',),),),),),)
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