Challenge 1
Use map to double every number.
python
Your answer
values = [2, 4, 6]
result =
print(list(result))Press Ctrl⌘Enter to check your answer
Code Completion
4 Challenges
Complete the Python map and filter code
Practice transforming, selecting, combining iterables, and composing map with filter.
Beginner
~6 min read
Challenge 2
Keep only the even numbers.
python
Your answer
values = [1, 2, 3, 4]
result =
print(list(result))Press Ctrl⌘Enter to check your answer
Challenge 3
Map add across two iterables.
python
Your answer
def add(left, right):
return left + right
left = [1, 2]
right = [10, 20]
result =
print(list(result))Press Ctrl⌘Enter to check your answer
Challenge 4
Remove empty names, then clean the remaining names.
python
Your answer
def clean(name):
return name.strip().title()
raw = [" ada ", "", " grace "]
result =
print(list(result))Press Ctrl⌘Enter to check your answer