Understanding Python Lists

What is the primary characteristic of lists in Python?

• They are unordered collections.

• They are immutable.

• They maintain the order of elements.

• They can only store integers.

Which method is commonly used to add an element to the end of a list?

• extend()

• add()

• insert()

• append()

In Python, what index is used to access the first element of a list?

• 2

• -1

• 0

• 1

What happens if you try to access an index that is out of range in a list?

• The list returns the last element.

• An IndexError is raised.

• The list returns the first element.

• The list returns None.

What does slicing a list with [2:5] return?

• Elements from index 2 to the end.

• Elements from index 0 to 5.

• Elements from index 2 to 5, excluding 5.

• Elements from index 2 to 5, including 5.

Which of the following is true about lists in Python?

• They can only contain elements of the same type.

• They are immutable.

• They cannot contain duplicate values.

• They can contain elements of different types.

How can you combine two lists in Python?

• Using the / operator.

• Using the * operator.

• Using the + operator.

• Using the - operator.

What is the result of concatenating ['a', 'b'] + [1, 2]?

• [1, 2, 'a', 'b']

• ['a', 1, 'b', 2]

• [1, 'a', 2, 'b']

• ['a', 'b', 1, 2]

Which function can be used to see all available methods for a list?

• help()

• list()

• dir()

• methods()

What does the reverse() method do to a list?

• Duplicates the list.

• Removes all elements from the list.

• Reverses the order of elements in the list.

• Sorts the list in descending order.