--- primary_color: orange secondary_color: lightgray text_color: black shuffle_questions: false --- ## What is the primary purpose of unit testing in software development? --- shuffle_answers: true --- - [ ] To test the entire application at once - [x] To ensure that each individual component of the software functions correctly - [ ] To test the user interface of the application - [ ] To validate the performance of the software ## In the following Python function, what would be an appropriate unit test to ensure its correctness? --- shuffle_answers: true --- ```python def add(a: int, b: int) -> int: return a + b ``` - [x] Test that checks if the function returns the correct sum of two positive numbers. - [x] Test that verifies if the function handles negative numbers correctly. - [ ] Test that checks if the function raises an exception when non-numeric values are passed. - [ ] Test that ensures the function works with floating-point numbers. ## Writing tests after the code is developed is generally considered a best practice in software development. - [ ] True - [x] False

--- primary_color: orange secondary_color: lightgray text_color: black shuffle_questions: false --- ## What is the purpose of documentation comments in Python? --- shuffle_answers: true --- - [ ] To provide comments that are ignored by the interpreter - [x] To document the code and generate external documentation using tools - [ ] To add comments specifically for developers reading the code - [ ] To specify the indentation level of the code block. ## In Python, how are single-line comments typically denoted? --- shuffle_answers: true --- - [ ] `// Comment` - [ ] `"""Comment """` - [ ] `/* Comment */` - [x] `# Comment` ## What is the difference between single-line and multi-line comments in programming languages? - [ ] Single-line comments are ignored by the compiler/interpreter, while multi-line comments are executed. - [x] Single-line comments can only span one line, while multi-line comments can span multiple lines. - [x] Single-line comments are typically used for code documentation, while multi-line comments are used for internal notes. - [ ] There is no difference; both single-line and multi-line comments serve the same purpose.