Podcast
Questions and Answers
What will be the result of executing numbers.pop() if the numbers list initially contains [1, 2, 3, 4, 5]?
What will be the result of executing numbers.pop() if the numbers list initially contains [1, 2, 3, 4, 5]?
- [1, 2, 3]
- [1, 2, 3, 4, 5]
- [1, 2, 3, 4] (correct)
- [2, 3, 4, 5]
Which statement correctly describes the behavior of del when applied to the list numbers = [10, 20, 30, 40, 50] with the command del numbers[1:3]?
Which statement correctly describes the behavior of del when applied to the list numbers = [10, 20, 30, 40, 50] with the command del numbers[1:3]?
- It removes the items at indices 1 and 2, leaving [10, 40, 50]. (correct)
- It removes all items from the list, resulting in an empty list.
- It keeps the list unchanged.
- It removes only the item at index 1, leaving [10, 30, 40, 50].
What will be the output after executing del numbers if numbers was defined as [1, 2, 3]?
What will be the output after executing del numbers if numbers was defined as [1, 2, 3]?
- The last element is removed, resulting in [1, 2]
- The list becomes empty.
- An error message indicating that `numbers` is not defined. (correct)
- [1, 2, 3]
If numbers is defined as [7, 8, 9, 10], what will be printed after executing del numbers[0]?
If numbers is defined as [7, 8, 9, 10], what will be printed after executing del numbers[0]?
Which statement correctly initializes a list with five elements, all set to zero?
Which statement correctly initializes a list with five elements, all set to zero?
What output is expected when executing numbers.pop(2) with numbers set to [4, 5, 6, 7]?
What output is expected when executing numbers.pop(2) with numbers set to [4, 5, 6, 7]?
What is the result of the following code: my_list = [1, 2, 3, 4]; my_list[1] = 10;?
What is the result of the following code: my_list = [1, 2, 3, 4]; my_list[1] = 10;?
Which of the following statements would effectively create an empty list?
Which of the following statements would effectively create an empty list?
What will be the output of the following code: my_list = [None] * 10; print(my_list[5])?
What will be the output of the following code: my_list = [None] * 10; print(my_list[5])?
What does the assignment my_list = [10, 20, 30, 40] store in my_list?
What does the assignment my_list = [10, 20, 30, 40] store in my_list?
What will the output be after executing the numbers.append(6) method on the initial list [1, 20, 3, 4, 5]?
What will the output be after executing the numbers.append(6) method on the initial list [1, 20, 3, 4, 5]?
What happens when numbers.insert(3, 40) is executed on the list [1, 20, 3, 4, 5, 6]?
What happens when numbers.insert(3, 40) is executed on the list [1, 20, 3, 4, 5, 6]?
Which method is used to remove the first occurrence of a specified value from the list?
Which method is used to remove the first occurrence of a specified value from the list?
If you start with the list [1, 20, 3, 4, 5] and apply numbers.remove(3), what will the second element in the modified list be?
If you start with the list [1, 20, 3, 4, 5] and apply numbers.remove(3), what will the second element in the modified list be?
What will be the output after performing the operations numbers.append(6) followed by numbers.insert(3, 40) on the list [1, 20, 3, 4, 5]?
What will be the output after performing the operations numbers.append(6) followed by numbers.insert(3, 40) on the list [1, 20, 3, 4, 5]?
What is the primary advantage of using an array or list over separate variables for storing multiple scores?
What is the primary advantage of using an array or list over separate variables for storing multiple scores?
Which statement about Python lists is correct?
Which statement about Python lists is correct?
Why might a programmer prefer using a list in Python over a traditional array structure?
Why might a programmer prefer using a list in Python over a traditional array structure?
In the example provided, how would you access the second score from the list?
In the example provided, how would you access the second score from the list?
What limitation do traditional arrays have in comparison to Python lists?
What limitation do traditional arrays have in comparison to Python lists?
Flashcards
pop() method
pop() method
Removes and returns an element at a specified index. If no index is given, removes the last element.
pop(index)
pop(index)
Removes and returns the item at the specified index in a list.
del method
del method
Deletes an element at a specific index or a range of elements (a slice).
del numbers[2:3]
del numbers[2:3]
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Removing elements
Removing elements
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Modifying List Elements
Modifying List Elements
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Changing element value
Changing element value
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Adding element (append)
Adding element (append)
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Inserting element (insert)
Inserting element (insert)
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Removing element (remove)
Removing element (remove)
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Array in Python
Array in Python
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Empty List
Empty List
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List with Values
List with Values
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Normal Variable
Normal Variable
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Assigning Elements at Creation
Assigning Elements at Creation
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List (alternative to array)
List (alternative to array)
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Initializing a List with a Set Value
Initializing a List with a Set Value
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Array vs. Normal Variable for multiple scores
Array vs. Normal Variable for multiple scores
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List Index
List Index
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List Initialization (Nones)
List Initialization (Nones)
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Study Notes
Removing an Element
-
Method 1 (Using
pop()): Removes and returns the element at a specified index. If no index is provided, it removes the last element. -
Example:
numbers.pop(1)print(numbers)# Output: [1, 3, 4, 5, 6] -
Method 2 (Using
del): Deletes an element at a specific index or deletes a slice (range) of elements. -
Example:
del numbers[1]print(numbers)# Output: [1, 4, 5, 6]del numbers[2:3]print(numbers)# Output: [1, 4]
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