Mastering Python: Data Types & Functions

What is the data type of the variable `x` in the following Python code snippet? ```python x = 3.14 ```

• int

• float

• str

• bool

Which of the following is a valid way to define a function in Python?

• `def my_function:`

• `function my_function()`

• `def my_function():`

• `my_function() = function`

What will be the output of the following code? ```python x = "Hello" y = "World" z = x + " " + y print(z) ```

• `HelloWorld`

• `Hello World`

• `Hello, World`

• `World Hello`

Which of the following is NOT a built-in data type in Python?

• list

• tuple

• array

• dict

What is the output of the following code? ```python def add(a, b): return a + b result = add(3, 4) print(result) ```

• 7

• 34

• `add(3, 4)`

• None

Which of the following statements is used to import a module in Python?

• `import module_name`

• `include module_name`

• `require module_name`

• `using module_name`

What is the result of the following expression in Python? ```python 5 // 2 ```

• 2.5

• 2

• 3

• 2.0

Which of the following is the correct way to access the value associated with the key `'name'` in a dictionary `person`? ```python person = {'name': 'Alice', 'age': 25} ```

• `person.name`

• `person['name']`

• `person(name)`

• `person->name`

What will be the output of the following code? ```python def multiply(x, y=2): return x * y result = multiply(5) print(result) ```

• 10

• 5

• 25

• Error

Which of the following is a mutable data type in Python?

• tuple

• string

• list

• int