Kursusindhold
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
Using the clear() Method: Emptying a Dictionary Completely
Dictionaries also offer a handy clear() method that removes all items, leaving you with an empty dictionary. Here's how it works.
# Creating a dictionary for book details book = { "title": "Pride and Prejudice", "author": "Jane Austen", "year": 1813, "genre": "Romance" } # Printing the dictionary before clearing print("Before clearing:", book) # Clearing all items from the dictionary book.clear() # Printing the dictionary after clearing print("After clearing:", book)
Opgave
Swipe to start coding
We’ve done a great job working with the authors_books dictionary, but it’s time to say goodbye to it.
- Clear the
authors_booksdictionary. - Use the
clear()method to do this.
Løsning
Skift til skrivebord for at øve i den virkelige verdenFortsæt der, hvor du er, med en af nedenstående mulighederVar alt klart?
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Sektion 2. Kapitel 8
Using the clear() Method: Emptying a Dictionary Completely
Dictionaries also offer a handy clear() method that removes all items, leaving you with an empty dictionary. Here's how it works.
# Creating a dictionary for book details book = { "title": "Pride and Prejudice", "author": "Jane Austen", "year": 1813, "genre": "Romance" } # Printing the dictionary before clearing print("Before clearing:", book) # Clearing all items from the dictionary book.clear() # Printing the dictionary after clearing print("After clearing:", book)
Opgave
Swipe to start coding
We’ve done a great job working with the authors_books dictionary, but it’s time to say goodbye to it.
- Clear the
authors_booksdictionary. - Use the
clear()method to do this.
Løsning
Skift til skrivebord for at øve i den virkelige verdenFortsæt der, hvor du er, med en af nedenstående mulighederVar alt klart?
Tak for dine kommentarer!
Sektion 2. Kapitel 8
Skift til skrivebord for at øve i den virkelige verdenFortsæt der, hvor du er, med en af nedenstående muligheder