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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

book
Deleting Tuples in Python: Removing References to Tuples

A tuple in Python is immutable, meaning once it's created, you cannot change, add, or remove its elements. However, you can delete the entire tuple using the del statement.


              
1234567

            
movies = ("Inception", "Interstellar", "Tenet", "Dunkirk", "Memento")

# Deleting the tuple
del movies

# Attempting to print the deleted tuple will raise an error
print(movies)
copy

Removing Items

Note

Since tuples are immutable, you cannot directly remove items from them. However, you can work around this by converting the tuple into a list, modifying the list, and then converting it back into a tuple.


              
12345678910111213

            
movies = ("Inception", "Interstellar", "Tenet", "Dunkirk", "Memento")

# Convert the tuple to a list
movies_list = list(movies)

# Remove specific items
movies_list.remove("Tenet")
movies_list.remove("Dunkirk")

# Convert the list back to a tuple
movies = tuple(movies_list)

print(movies)
copy
Uppgift

Swipe to start coding

The animal movies didn't appeal to the audience, except for the animated movie "Finding Nemo".

  • Convert the tuple movie_poster into a list and assign it to the variable temp_list.
  • Remove the elements "The Lion King" and "Jurassic Park" from the list.
  • Convert the list back into a tuple and assign the value to the variable movie_poster.
  • Delete the list temp_list.

Lösning

Switch to desktopByt till skrivbordet för praktisk övningFortsätt där du är med ett av alternativen nedan
Var allt tydligt?

Hur kan vi förbättra det?

Tack för dina kommentarer!

Avsnitt 3. Kapitel 4
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book
Deleting Tuples in Python: Removing References to Tuples

A tuple in Python is immutable, meaning once it's created, you cannot change, add, or remove its elements. However, you can delete the entire tuple using the del statement.


              
1234567

            
movies = ("Inception", "Interstellar", "Tenet", "Dunkirk", "Memento")

# Deleting the tuple
del movies

# Attempting to print the deleted tuple will raise an error
print(movies)
copy

Removing Items

Note

Since tuples are immutable, you cannot directly remove items from them. However, you can work around this by converting the tuple into a list, modifying the list, and then converting it back into a tuple.


              
12345678910111213

            
movies = ("Inception", "Interstellar", "Tenet", "Dunkirk", "Memento")

# Convert the tuple to a list
movies_list = list(movies)

# Remove specific items
movies_list.remove("Tenet")
movies_list.remove("Dunkirk")

# Convert the list back to a tuple
movies = tuple(movies_list)

print(movies)
copy
Uppgift

Swipe to start coding

The animal movies didn't appeal to the audience, except for the animated movie "Finding Nemo".

  • Convert the tuple movie_poster into a list and assign it to the variable temp_list.
  • Remove the elements "The Lion King" and "Jurassic Park" from the list.
  • Convert the list back into a tuple and assign the value to the variable movie_poster.
  • Delete the list temp_list.

Lösning

Switch to desktopByt till skrivbordet för praktisk övningFortsätt där du är med ett av alternativen nedan
Var allt tydligt?

Hur kan vi förbättra det?

Tack för dina kommentarer!

Avsnitt 3. Kapitel 4
Switch to desktopByt till skrivbordet för praktisk övningFortsätt där du är med ett av alternativen nedan
Vi beklagar att något gick fel. Vad hände?
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