All MCQs

Names assigned inside a function are usually local to that function’s execution context. This separation prevents unintended interference with names elsewhere in the program.

A parameter is the name listed in a function definition to receive input. An argument is the actual object supplied when the function is called.

`return` provides the function’s output to the code that called it. Execution of that function call stops when the return statement is reached.

The `def` statement creates a named block of reusable code. Functions help organize logic and reduce repeated code.

A `while` loop continues as long as its condition remains true. It is useful when the number of iterations is not known in advance.

A `for` loop iterates directly over each element of a sequence or iterable. It is clearer than manually managing an index for this task.

An `if` statement controls whether a block runs based on a Boolean condition. It is the basic construct for conditional decision making.

Negative indexing counts backward from the end of a sequence. Index -1 therefore refers to the final element.

A slice includes the start index but excludes the stop index. Indices 1, 2, and 3 contain 4, 6, and 8.

Python uses zero-based indexing, so index 2 refers to the third element. The third value in the list is 30.

Sets retain unique elements and automatically eliminate duplicates. They are therefore useful for identifying distinct category values.

A dictionary maps each unique key to an associated value. This allows direct lookup by meaningful labels such as student IDs or feature names.