What keyword is used in Python to yield values one at a time from a generator function?
Option A is correct. The yield statement turns a standard function into a generator function, pausing function execution and returning a generator iterator to the caller.
What does the Global Interpreter Lock (GIL) in CPython enforce?
Option B is correct. The GIL is a mutual exclusion lock used by CPython to prevent multiple native threads from executing Python bytecodes concurrently, protecting memory management.
Which decorator in Python is used to define a method inside a class that does not receive an implicit self or cls reference?
Option A is correct. @staticmethod defines a static method that behaves like a plain function inside a class namespace without receiving implicit self or cls arguments.
What is the output of [x**2 for x in range(5) if x % 2 == 0]?
Option A is correct. range(5) yields 0, 1, 2, 3, 4. Even numbers are 0, 2, 4. Their squares are 0, 4, 16, resulting in [0, 4, 16].
Which module in Python provides support for compiling and matching Regular Expressions?
Option B is correct. The re module is standard in Python for regular expression processing, offering functions like re.search(), re.match(), re.findall(), and re.sub().