Using If-Else Statements and For Loops with Lists in Python
18 Questions
1 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the result of x[::2] when applying slicing with a step of 2 to the list x = ['Ahmed', 'Alex', 'Luic', 'Kenza', 'Taha']?

  • ['Ahmed', 'Kenza']
  • ['Alex', 'Kenza']
  • ['Ahmed', 'Luic'] (correct)
  • ['Ahmed', 'Taha']

    • If you want to access the last two elements of the list x=['Ahmed', 'Alex', 'Luic', 'Kenza', 'Taha'] using slicing, which of the following correctly represents this?

  • x[-2:] (correct)
  • x[:-2]
  • x[3:]
  • x[-3:]

    • In the nested list scenario given, what does account[-1][2:] represent?

  • The third and fourth elements of the list followers
  • The last element of list account
  • The second element of the list followers
  • The third to last elements of the list followers (correct)

    • To obtain the number of elements in a list, which function should be used?

    <p>len()</p> Signup and view all the answers

    Which method is used to add an item at a specified index in a list?

    <p>insert()</p> Signup and view all the answers

    What is the purpose of the pop() method in Python lists?

    <p>To remove an item at a given index and return it</p> Signup and view all the answers

    What will be the output of the code snippet 'population_2 = population[:2]'?

    <p>['4M', '2M']</p> Signup and view all the answers

    In Python, what is a key difference between tuples and lists?

    <p>Tuples are immutable while lists are mutable.</p> Signup and view all the answers

    What does the 'enumerate()' method do when used with a list in Python?

    <p>Returns an iterator of tuples containing the index and item.</p> Signup and view all the answers

    How would you define tuple comprehension in Python?

    <p>Generating a sequence of tuples based on certain conditions.</p> Signup and view all the answers

    What is the primary implication of tuples being immutable in Python?

    <p>Elements in tuples cannot be changed after creation.</p> Signup and view all the answers

    How does Python handle iteration when using 'zip()' with lists of unequal lengths?

    <p>It automatically truncates both lists to the length of the shorter list.</p> Signup and view all the answers

    What is the correct syntax to create a comprehension tuple in Python?

    <p>tuple(expression for variable in sequence)</p> Signup and view all the answers

    Which data structure in Python represents a collection of unique elements?

    <p>Set</p> Signup and view all the answers

    What will be the output when searching for the element 45653 in a tuple 't' using 'in' operator?

    <p>found</p> Signup and view all the answers

    Which object was created using list comprehension in the provided Python code snippet?

    <p>'l'</p> Signup and view all the answers

    How do you create a list in Python using comprehension?

    <p>[expression for variable in sequence]</p> Signup and view all the answers

    What is the difference in execution time between searching for an element in a list 'l' vs. a tuple 't'?

    <p>Searching is slower in list 'l' than tuple 't'</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser