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Python Data Structures
course content

Course Content

Python Data Structures

Python Data Structures

1. List
Creating a ListNested ListChallenge: Create a ListList IndexingList LengthLists Are MutableAppend() MethodInsert() MethodDeleting ElementsRemoving ElementsList Comprehensions
2. Dictionary
Creating a DictionaryChallenge: Craft the DictionaryExtraction of InformationAdding ItemsDel KeywordPop() MethodPopitem() MethodClear() MethodDictionary Comprehensions
3. Tuple
Creating a Tuple Accessing Elements of a TupleConcatenation of Tuples Delete a Tuple Update a TupleAdding Items Challenge: Concatenate Tuples
4. Set
Creating a SetAdd() MethodUpdate() MethodAccessing the Elements of a SetRemove() and Discard() MethodsClear() Method

bookAccessing Elements of a Tuple

Accessing elements in a tuple is straightforward and works the same way as with lists. Simply specify the index number inside square brackets. Remember, indexing starts at 0, just like with lists.


              
123

            
countries = ('India', 'Latvia', 'Panama', 'Serbia', 'Finland', 'Germany', 'Japan')
print(countries[1])
print(countries[5])
copy

Tuples also support negative indexing, where the indexing begins from the end. Thus, the last element has an index of -1, the second to last is -2, and so on.


              
123

            
countries = ('India', 'Latvia', 'Panama', 'Serbia', 'Finland', 'Germany', 'Japan')
print(countries[-1])
print(countries[-4])
copy

In the example above, we access the last element (indexed at -1) and the fourth element from the end (indexed at -4).

Task

Given the tuple:

Retrieve the first, second, fifth, and seventh items to create a new tuple:

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Everything was clear?

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Section 3. Chapter 2
toggle bottom row

bookAccessing Elements of a Tuple

Accessing elements in a tuple is straightforward and works the same way as with lists. Simply specify the index number inside square brackets. Remember, indexing starts at 0, just like with lists.


              
123

            
countries = ('India', 'Latvia', 'Panama', 'Serbia', 'Finland', 'Germany', 'Japan')
print(countries[1])
print(countries[5])
copy

Tuples also support negative indexing, where the indexing begins from the end. Thus, the last element has an index of -1, the second to last is -2, and so on.


              
123

            
countries = ('India', 'Latvia', 'Panama', 'Serbia', 'Finland', 'Germany', 'Japan')
print(countries[-1])
print(countries[-4])
copy

In the example above, we access the last element (indexed at -1) and the fourth element from the end (indexed at -4).

Task

Given the tuple:

Retrieve the first, second, fifth, and seventh items to create a new tuple:

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

Section 3. Chapter 2
toggle bottom row

bookAccessing Elements of a Tuple

Accessing elements in a tuple is straightforward and works the same way as with lists. Simply specify the index number inside square brackets. Remember, indexing starts at 0, just like with lists.


              
123

            
countries = ('India', 'Latvia', 'Panama', 'Serbia', 'Finland', 'Germany', 'Japan')
print(countries[1])
print(countries[5])
copy

Tuples also support negative indexing, where the indexing begins from the end. Thus, the last element has an index of -1, the second to last is -2, and so on.


              
123

            
countries = ('India', 'Latvia', 'Panama', 'Serbia', 'Finland', 'Germany', 'Japan')
print(countries[-1])
print(countries[-4])
copy

In the example above, we access the last element (indexed at -1) and the fourth element from the end (indexed at -4).

Task

Given the tuple:

Retrieve the first, second, fifth, and seventh items to create a new tuple:

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

Accessing elements in a tuple is straightforward and works the same way as with lists. Simply specify the index number inside square brackets. Remember, indexing starts at 0, just like with lists.


              
123

            
countries = ('India', 'Latvia', 'Panama', 'Serbia', 'Finland', 'Germany', 'Japan')
print(countries[1])
print(countries[5])
copy

Tuples also support negative indexing, where the indexing begins from the end. Thus, the last element has an index of -1, the second to last is -2, and so on.


              
123

            
countries = ('India', 'Latvia', 'Panama', 'Serbia', 'Finland', 'Germany', 'Japan')
print(countries[-1])
print(countries[-4])
copy

In the example above, we access the last element (indexed at -1) and the fourth element from the end (indexed at -4).

Task

Given the tuple:

Retrieve the first, second, fifth, and seventh items to create a new tuple:

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Section 3. Chapter 2
Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
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