Web Accessibility Basics

MediumPython

Problem

What is accessibility?

For this coding exercise, represent an accessibility tree as nested dictionaries containing role, name, and children fields. Implement validate_accessibility(root) to return True only when every interactive node has a non-empty, non-whitespace name; non-interactive nodes are ignored, but their descendants must still be checked. The function receives one root dictionary and returns a Boolean.

Constraints

1 <= number of nodes <= 1000
Each node contains role, name, and children fields
children is a list of valid node dictionaries
Interactive roles are button, link, textbox, checkbox, radio, and select
A name is valid only when it is a string containing at least one non-whitespace character

Function Signature

def validate_accessibility(root):

Code

Run your code to see test output here.