Level 3Exercise #67
Evict the oldest entry
Remove and return the least-recently inserted item.
What you’ll practice
This Level 3 exercise focuses on OrderedDict.popitem in the Collections curriculum. Solve the challenge prompt above using clear, idiomatic Python and the relevant language or standard-library tools.
Relevant Python reference: re — Regular expression operations, collections.OrderedDict.
Sample Test Cases
Example #1
Input:
evict_oldest(__import__('collections').OrderedDict([('a',1),('b',2)]))Output:
('a',1)Further Reading
Reference Solution
Reveal Reference Solution
def evict_oldest(cache): return cache.popitem(last=False)Pro Tips & Keyboard Shortcuts
Color Theme
Ctrl + K then T
Open VS Code Color Theme Quick Pick to select from 20 dark and light themes.
Editor SettingsCtrl + K
Open practice settings drawer to toggle line numbers, indenting, font size & hints.
Search MenuCtrl + /
Expand sidebar menu, focus search bar, and highlight search text instantly.
Focus Code Editor
Esc or Ctrl + `
Instantly highlight and focus code editor from anywhere, restoring cursor right where you left off.
Normal ViewEsc
Collapse sidebar and close all popups or settings drawers for clean focus view.