Removing dictionary entries in Python - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to remove the key 'b' from the dictionary.

Python

my_dict = {'a': 1, 'b': 2, 'c': 3}
my_dict.[1]('b')
print(my_dict)

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

Apop

Bremove

Cdelete

Ddiscard

Attempts:

3 left

💡 Hint

Common Mistakes

Using list methods like remove() which do not exist for dictionaries.

Trying to use delete which is not a dictionary method.

The pop method removes a key from a dictionary and returns its value.

2fill in blank

medium

Complete the code to remove the key 'x' safely without error if it does not exist.

Python

data = {'x': 10, 'y': 20}
removed = data.[1]('x', None)
print(data, removed)

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

Aremove

Bdelete

Cdiscard

Dpop

Attempts:

3 left

💡 Hint

Common Mistakes

Using remove() which is not a dictionary method.

Using del statement which raises error if key missing.

The pop method can take a default value to avoid errors if the key is missing.

3fill in blank

hard

Fix the error in the code to remove the key 'k' from the dictionary.

Python

d = {'k': 5, 'm': 7}
d.[1]('k')
print(d)

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

Aremove

Bpop

Cdiscard

Ddelete

Attempts:

3 left

💡 Hint

Common Mistakes

Using remove() which is for lists, not dictionaries.

Trying to use delete which is not a method.

pop is the correct method to remove a key from a dictionary.

4fill in blank

hard

Fill both blanks to remove all keys with values less than 5 from the dictionary.

Python

d = {'a': 3, 'b': 7, 'c': 2}
for key in list(d.[1]()):
    if d[key] [2] 5:
        d.pop(key)
print(d)

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

Akeys

B>

C<

Ditems

Attempts:

3 left

💡 Hint

Common Mistakes

Using items() without unpacking keys and values.

Using greater than operator instead of less than.

Use keys() to iterate over keys and remove those with values less than 5 using <.

5fill in blank

hard

Fill all three blanks to create a new dictionary excluding entries with value 0.

Python

original = {'x': 0, 'y': 5, 'z': 0}
filtered = { [1]: [2] for [3] in original.items() if [2] != 0 }
print(filtered)

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

Ak

Bv

Ck, v

Dkey

Attempts:

3 left

💡 Hint

Common Mistakes

Using only one variable to unpack items.

Using wrong variable names inconsistently.

Use k, v to unpack items, then build a dictionary with keys k and values v excluding zeros.