Python Fundamentals Challenge

What is the output of the following code: `print([1, 2, 3][1])`?

• 1

• 3

• [1, 2, 3]

• 2

How do you create a 2D list in Python? Provide an example.

• [1, 2, 3, 4, 5, 6]

• [[1, 2], [3, 4, 5]]

• {[1, 2, 3], [4, 5, 6]}

• [[1, 2, 3], [4, 5, 6], [7, 8, 9]]

Write a while loop that prints numbers from 1 to 5.

• i = 1 while i < 5: print(i) i += 1

• for i in range(1, 6): print(i)

• i = 1 while i <= 5: print(i) i += 1

• i = 0 while i <= 5: print(i) i += 1

What is the difference between a list and a set in Python?

• A list is unordered and allows duplicates; a set maintains order and allows duplicates.

• A list is mutable and a set is immutable; both allow duplicates.

• A list allows duplicates and maintains order; a set does not allow duplicates and is unordered.

• A list can only contain integers; a set can contain any data type.

How do you access the first element of a list named `my_list`?

• my_list[0]

• my_list.first()

• first(my_list)

• my_list(1)

What will be the output of `print('Hello'[1:4])`?

• ell

• llo

• Hello

• elloo

How do you add a key-value pair to a dictionary in Python?

• dictionary.add(key, value)

• dictionary[key] = value

• dictionary[key] += value

• dictionary.insert(key, value)

Write a for loop that iterates over a list of fruits and prints each fruit.

• for fruit in range(fruits): print(fruit)

• for fruit in fruits: fruit.print()

• fruits = ['apple', 'banana', 'cherry'] for fruit in fruits: print(fruit)

• fruits = ['apple', 'banana', 'cherry'] print(fruits)

What is the purpose of the `open()` function in Python?

• To read data from a database.

• To create a new file in the current directory.

• To open a file and return a file object.

• To close an open file and free resources.

How do you read the contents of a file named `data.txt`?

• Use 'import data.txt' in Python.

• Use 'open('data.txt', 'w').write()' in Python.

• Use 'open('data.txt', 'r').read()' in Python.

• Use 'readfile('data.txt')' in Python.