Question

Function has_a_vowel def has_a_vowel(s): """ Returns: True if s has at least one vowel (a, e, i, o, or u) This function does not count y as a vowel. Example: If s is 'ham', this function returns True Example: If s is 'sky', this function returns False Parameter s: a string to check Precondition: s is a non-empty string with all lower case letters """ Enter ten different test cases for has_a_vowel(s).

Answer 1

The function 'has_a_vowel' is tested with ten different strings to determine if it accurately identifies the presence of vowels, excluding 'y'. Test cases include various scenarios, from no vowels to multiple vowels, ensuring a robust check of the function.

Step-by-step explanation:

The student's question pertains to testing a function has_a_vowel, which is intended to check for the presence of at least one vowel in a given string. To provide appropriate test cases for the function, we will feed it various strings and observe if it returns True or False correctly in accordance with the definition provided that y is not considered a vowel. Here are ten different test cases for this function:

1. 'algorithm' - Expected: True
2. 'rhythm' - Expected: False
3. 'encyclopedia' - Expected: True
4. 'xyz' - Expected: False
5. 'quick' - Expected: True
6. 'bzzz' - Expected: False
7. 'influence' - Expected: True
8. 'strength' - Expected: False
9. 'obstacle' - Expected: True
10. 'twelfth' - Expected: True

These cases are chosen to test various scenarios such as words with all vowels, no vowels, beginning with vowels, ending with vowels, and containing 'y' which is not counted as a vowel in this function.