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Python Data Structures
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Python Data Structures

Python Data Structures

1. Mastering Python Lists
Creating Lists in Python: Declaring and Initializing ListsList Indexing in Python: Accessing Elements EfficientlyWorking with Nested Lists in PythonPython List Length: Measuring and Managing List SizeModifying Lists in Python: Updating and Changing ElementsUsing the append() Method: Adding Elements to ListsUsing the insert() Method: Placing Elements at Specific PositionsDeleting Elements in Python Lists: Removing Items SafelyUsing the remove() Method: Deleting Specific Elements from Lists
2. Mastering Python Dictionaries
Creating a Dictionary in Python: Storing Key-Value PairsAccessing Dictionary ValuesAccessing Dictionary KeysAdding Items to a Dictionary: Updating Key-Value PairsUsing the del Keyword: Removing Dictionary EntriesUsing the pop() Method: Deleting Elements with Return ValuesUsing the popitem() Method: Removing the Last Inserted ItemUsing the clear() Method: Emptying a Dictionary Completely
3. Mastering Python Tuples
Creating a Tuple in Python: Defining Immutable Data StructuresAccessing Elements in a Tuple: Indexing TechniqueConcatenating Tuples in Python: Merging Immutable SequencesDeleting Tuples in Python: Removing References to TuplesUpdating Tuples in PythonAdding Items to a Tuple: Alternative Approaches Using ListsCounting Elements in a Tuple: Using the count() MethodFinding Elements in a Tuple: Using the index() Method for Lookup
4. Mastering Python Sets
Creating a Set in Python: Defining Unordered CollectionsUsing the add() Method: Adding Single Elements to a SetUsing the update() Method: Merging Multiple Elements into a SetAccessing Elements in a Set: Iteration and Membership TestingUsing the remove() and discard() MethodsUsing the clear() Method: Removing All Elements from a Set

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Finding Elements in a Tuple: Using the index() Method for Lookup

The index() method in Python is used to find the first occurrence of a specified element in a tuple. It returns the index of the element, which is helpful when you need to locate the position of specific data.

python

The method returns the first index where the element is found. If the element is not present in the tuple, a ValueError is raised.


              
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# Tuple of movies
movies = ("Inception", "Interstellar", "Tenet", "Dunkirk", "Memento")

# Find the index of "Tenet"
tenet_index = movies.index("Tenet")

print(f"'Tenet' is at index {tenet_index}.")
copy

The result, 2, indicates that "Tenet" is the third element (since indexing starts at 0).

Oppgave

Swipe to start coding

You are given the tuple drama_movies.

  • Find the index of the element "Fight Club" in this tuple.
  • Use the index() method to do this.

Løsning

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Seksjon 3. Kapittel 8
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book
Finding Elements in a Tuple: Using the index() Method for Lookup

The index() method in Python is used to find the first occurrence of a specified element in a tuple. It returns the index of the element, which is helpful when you need to locate the position of specific data.

python

The method returns the first index where the element is found. If the element is not present in the tuple, a ValueError is raised.


              
1234567

            
# Tuple of movies
movies = ("Inception", "Interstellar", "Tenet", "Dunkirk", "Memento")

# Find the index of "Tenet"
tenet_index = movies.index("Tenet")

print(f"'Tenet' is at index {tenet_index}.")
copy

The result, 2, indicates that "Tenet" is the third element (since indexing starts at 0).

Oppgave

Swipe to start coding

You are given the tuple drama_movies.

  • Find the index of the element "Fight Club" in this tuple.
  • Use the index() method to do this.

Løsning

Switch to desktopBytt til skrivebordet for virkelighetspraksisFortsett der du er med et av alternativene nedenfor
Alt var klart?

Hvordan kan vi forbedre det?

Takk for tilbakemeldingene dine!

Seksjon 3. Kapittel 8
Switch to desktopBytt til skrivebordet for virkelighetspraksisFortsett der du er med et av alternativene nedenfor
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