Level 2Exercise #40
Validate every token
Return True only when every token is a non-empty alphanumeric string.
What you’ll practice
This Level 2 exercise focuses on all 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: all().
Sample Test Cases
Example #1
Input:
valid_tokens(['abc','A7',''])Output:
FalseFurther Reading
Reference Solution
Reveal Reference Solution
def valid_tokens(tokens: list[str]) -> bool: return all(token and token.isalnum() for token in tokens)Pro Tips & Keyboard Shortcuts
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