Level 2Exercise #41
Accept numeric inputs
Return True for int or float inputs, but reject bool explicitly.
What you’ll practice
This Level 2 exercise focuses on isinstance in the Built-ins curriculum. Solve the challenge prompt above using clear, idiomatic Python and the relevant language or standard-library tools.
Relevant Python reference: Python Standard Library — Built-ins.
Sample Test Cases
Example #1
Input:
is_number(True)Output:
FalseFurther Reading
Reference Solution
Reveal Reference Solution
def is_number(value) -> bool: return isinstance(value, (int, float)) and not isinstance(value, bool)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.