v0.40: Create exercises. Challenge the community.

is_alpha_palindrome

Your mission

Implement is_alpha_palindrome, a filtered palindrome checker.

See it in action

is_alpha_palindrome("Never odd or even")

Expected result

True

Your checklist

For your own tracking. Tests grade your code.

Create alpha_palindrome.py.
Expose def is_alpha_palindrome(text: str) -> bool:.
Build the comparison string by keeping alphabetic characters only; spaces, digits, punctuation, and other non-letter characters are removed before checking the palindrome.
The comparison is case-insensitive.
Return False when no letter remains after filtering.

More examples

is_alpha_palindrome("almost")

Expected result

False

Constraints

Expected files

alpha_palindrome.py

Allowed functions

None. Write every helper yourself.

is_alpha_palindrome

Your mission

Implement is_alpha_palindrome, a filtered palindrome checker.

See it in action

is_alpha_palindrome("Never odd or even")

Expected result

True

Your checklist

For your own tracking. Tests grade your code.

Create alpha_palindrome.py.
Expose def is_alpha_palindrome(text: str) -> bool:.
Build the comparison string by keeping alphabetic characters only; spaces, digits, punctuation, and other non-letter characters are removed before checking the palindrome.
The comparison is case-insensitive.
Return False when no letter remains after filtering.

More examples

is_alpha_palindrome("almost")

Expected result

False

Constraints

Expected files

alpha_palindrome.py

Allowed functions

None. Write every helper yourself.

Tests

Run the tests to grade your code

Build your code, then check each test here. Open a result to inspect its output.

Build

01Sentence palindromeWaiting

02Simple non-palindromeWaiting

03Punctuation ignoredWaiting

04Digits are removed before comparisonWaiting

05Digits removed but remaining letters are not a palindromeWaiting

06Empty stringWaiting

07No lettersWaiting

08Single letterWaiting

is_alpha_palindrome

Your mission

Implement is_alpha_palindrome, a filtered palindrome checker.

See it in action

is_alpha_palindrome("Never odd or even")

Expected result

True

Your checklist

For your own tracking. Tests grade your code.

Create alpha_palindrome.py.
Expose def is_alpha_palindrome(text: str) -> bool:.
Build the comparison string by keeping alphabetic characters only; spaces, digits, punctuation, and other non-letter characters are removed before checking the palindrome.
The comparison is case-insensitive.
Return False when no letter remains after filtering.

More examples

is_alpha_palindrome("almost")

Expected result

False

Constraints

Expected files

alpha_palindrome.py

Allowed functions

None. Write every helper yourself.

is_alpha_palindrome

Your mission

Implement is_alpha_palindrome, a filtered palindrome checker.

See it in action

is_alpha_palindrome("Never odd or even")

Expected result

True

Your checklist

For your own tracking. Tests grade your code.

Create alpha_palindrome.py.
Expose def is_alpha_palindrome(text: str) -> bool:.
Build the comparison string by keeping alphabetic characters only; spaces, digits, punctuation, and other non-letter characters are removed before checking the palindrome.
The comparison is case-insensitive.
Return False when no letter remains after filtering.

More examples

is_alpha_palindrome("almost")

Expected result

False

Constraints

Expected files

alpha_palindrome.py

Allowed functions

None. Write every helper yourself.

Tests

Run the tests to grade your code

Build your code, then check each test here. Open a result to inspect its output.

Build

01Sentence palindromeWaiting

02Simple non-palindromeWaiting

03Punctuation ignoredWaiting

04Digits are removed before comparisonWaiting

05Digits removed but remaining letters are not a palindromeWaiting

06Empty stringWaiting

07No lettersWaiting

08Single letterWaiting

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