Iterator protocol in Python - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to get an iterator from the list.

Python

my_list = [1, 2, 3]
my_iter = [1](my_list)

Drag options to blanks, or click blank then click option'

Alist

Bnext

Citer

Drange

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'next' instead of 'iter' to get the iterator.

Trying to convert the list to another list.

Using 'range' which creates a sequence, not an iterator from the list.

The iter() function returns an iterator object from an iterable like a list.

2fill in blank

medium

Complete the code to get the next item from the iterator.

Python

my_list = [10, 20, 30]
my_iter = iter(my_list)
item = [1](my_iter)

Drag options to blanks, or click blank then click option'

Aiter

Bnext

Clist

Dappend

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'iter' again instead of 'next'.

Trying to convert the iterator to a list.

Using 'append' which is a list method, not related to iterators.

The next() function returns the next item from an iterator.

3fill in blank

hard

Fix the error in the code to correctly iterate over the list using an iterator.

Python

my_list = [5, 6, 7]
my_iter = iter(my_list)
while True:
    try:
        item = [1](my_iter)
        print(item)
    except StopIteration:
        break

Drag options to blanks, or click blank then click option'

Anext

Biter

Clist

Dprint

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'iter' inside the loop which resets the iterator.

Using 'list' which is not a function to get next item.

Using 'print' instead of fetching the next item.

The next() function is used inside the loop to get each item until StopIteration is raised.

4fill in blank

hard

Fill both blanks to create a dictionary of squares for numbers greater than 2.

Python

numbers = [1, 2, 3, 4, 5]
squares = {num: num[1]2 for num in numbers if num [2] 2}

Drag options to blanks, or click blank then click option'

A**

B>

C<

D*

Attempts:

3 left

💡 Hint

Common Mistakes

Using multiplication (*) instead of exponentiation (**).

Using less than (<) instead of greater than (>).

Confusing the operators for filtering.

The ** operator is used for exponentiation (square), and > filters numbers greater than 2.

5fill in blank

hard

Fill all three blanks to create a dictionary with uppercase keys and values greater than 10.

Python

data = {'a': 5, 'b': 15, 'c': 20}
result = { [1]: [2] for k, v in data.items() if v [3] 10}

Drag options to blanks, or click blank then click option'

Ak.upper()

Bv

C>

Dk

Attempts:

3 left

💡 Hint

Common Mistakes

Using original keys without uppercase conversion.

Using wrong comparison operator like '<'.

Mixing keys and values in the dictionary comprehension.

Keys are converted to uppercase with k.upper(), values are v, and filter uses > to select values greater than 10.