Tuples are ordered and unchangeable collections of data in Python. A tuple is defined using parentheses and items within a tuple can be accessed by their index. While tuples are immutable, there are workarounds to add or remove items by converting the tuple to a list, modifying it, and converting it back to a tuple. Tuples can also be nested within other tuples to group related data. Basic operations on tuples include addition, multiplication, and checking if an item is contained within the tuple.
Tuples are ordered and unchangeable collections of data in Python. A tuple is defined using parentheses and items within a tuple can be accessed by their index. While tuples are immutable, there are workarounds to add or remove items by converting the tuple to a list, modifying it, and converting it back to a tuple. Tuples can also be nested within other tuples to group related data. Basic operations on tuples include addition, multiplication, and checking if an item is contained within the tuple.
Tuples are ordered and unchangeable collections of data in Python. A tuple is defined using parentheses and items within a tuple can be accessed by their index. While tuples are immutable, there are workarounds to add or remove items by converting the tuple to a list, modifying it, and converting it back to a tuple. Tuples can also be nested within other tuples to group related data. Basic operations on tuples include addition, multiplication, and checking if an item is contained within the tuple.
Tuples are ordered and unchangeable collections of data in Python. A tuple is defined using parentheses and items within a tuple can be accessed by their index. While tuples are immutable, there are workarounds to add or remove items by converting the tuple to a list, modifying it, and converting it back to a tuple. Tuples can also be nested within other tuples to group related data. Basic operations on tuples include addition, multiplication, and checking if an item is contained within the tuple.
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TUPLE
CREATING TUPLE:
• Tuples are used to store multiple items in a single variable.
• Tuple is one of 4 built-in data types in Python used to store collections of data, the other 3 are List, Set, and Dictionary, all with different qualities and usage.
• A tuple is a collection which is ordered and unchangeable.
• Tuples are written with round brackets.
Create a Tuple:
thistuple = ("apple", "banana", "cherry") print(thistuple) UTILITY OF TUPLES: Tuple items are ordered, unchangeable, and allow duplicate values.
Tuple items are indexed, the first item has index [0], the second item has index [1]
Ordered:
When we say that tuples are ordered, it means that the items have a defined order, and that order will not change.
Unchangeable:
Tuples are unchangeable, meaning that we cannot change, add or remove items after the tuple has been created. Allow Duplicates: Since tuples are indexed, they can have items with the same value
Example:
Tuples allow duplicate values:
thistuple = ("apple", "banana", "cherry", "apple", "cherry") print(thistuple) ACCESSING VALUES IN TUPLES: You can access tuple items by referring to the index number, inside square brackets.
cherry UPDATING TUPLES: Tuples are unchangeable, meaning that you cannot change, add, or remove items once the tuple is created. But there are some workarounds. Change Tuple Values Once a tuple is created, you cannot change its values. Tuples are unchangeable, or immutable as it. But there is a workaround. You can convert the tuple into a list, change the list, and convert the list back into a tuple. Example Convert the tuple into a list to be able to change it: x = ("apple", "banana", "cherry") y = list(x) y[1] = "kiwi" x = tuple(y) print(x)
Add Items Since tuples are immutable, they do not have a build-in append() method, but there are other ways to add items to a tuple. 1.Convert into a list:
Just like the workaround for changing a tuple, you can convert it into a list, add your item(s), and convert it back into a tuple.
Example
Convert the tuple into a list, add "orange", and convert it back into a tuple:
thistuple = ("apple", "banana", "cherry")
y = list(thistuple)
y.append("orange")
thistuple = tuple(y) 2. Add tuple to a tuple: You are allowed to add tuples to tuples, so if you want to add one item, (or many), create a new tuple with the item(s), and add it to the existing tuple: Example Create a new tuple with the value "orange", and add that tuple: thistuple = ("apple", "banana", "cherry") y = ("orange",) thistuple += y print(thistuple)
Note: When creating a tuple with only one item, remember to include a comma after the item, otherwise it will not be identified as a tuple. DELETING ELEMENTS IN TUPLES: Tuples are unchangeable, so you cannot remove items from it, but you can use the same workaround as we used for changing and adding tuple items. Example
Convert the tuple into a list, remove "apple", and convert it back into a tuple:
thistuple = ("apple", "banana", "cherry")
y = list(thistuple)
y.remove("apple")
thistuple = tuple(y) you can delete the tuple completely:
EXAMPLE:
The del keyword can be used to delete the tuple completely.
thistuple = ("apple", "banana", "cherry")
del thistuple print(thistuple) #this will raise an error because the tuple no longer exists BASIC TUPLE OPERATIONS: The various operations that we can perform on tuples are very similar to lists. In fact, you just saw the + operator with tuples, it works with tuples just like it works with a list. Some other operators for tuples include: Addition: Using the addition operator, with two or more tuples, adds up all the elements into a new tuple. For example, >>> t = (2, 5, 0) + (1, 3) + (4,) >>> print (t); Output: (2, 5, 0, 1, 3, 4) Multiplication: Multiplying a tuple by any integer, x will simply create another tuple with all the elements from the first tuple being repeated x number of times. For example, t*3 means, elements of tuple t will be repeated 3 times. >>> t = (2, 5) >>> print (t*3); Output: (2, 5, 2, 5, 2, 5) in keyword in keyword, can not only be used with tuples, but also with strings and lists too. It is used to check, if any element is present in the sequence or not. It returns True if the element is found, otherwise False. For example,
>>> t = (1, 2, 3, 6, 7, 8)
>>> 2 in t
>>> 5 in t
Output:
True
False NESTED TUPLES: A nested tuple is a Python tuple that has been placed inside of another tuple. Let's have a look at the following 8-element tuple. tuple = (12, 23, 36, 20, 51, 40, (200, 240, 100)) This last element, which consists of three items enclosed in parenthesis, is known as a nested tuple since it is contained inside another tuple. The name of the main tuple with the index value, tuple[index], can be used to obtain the nested tuple, and we can access each item of the nested tuple by using tuple[index-1][index-2]. EXAMPLE:
