Python Programming Prowess

What is the correct way to check if the user input is a number in Python?

• `if input.isdigit():`

• `if input().isnumeric():`

• `if input.isnumeric():`

• `if isinstance(input, int):`

How do you convert the string `"123"` to an integer in Python?

• `int("123")`

• `str(123)`

• `"123".to_i()`

• `integer("123")`

Which of the following function definitions is correct in Python?

• `def my_function:`

• `function my_function():`

• `def my_function():`

• `define my_function():`

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

• `my_dict.add('key', 'value')`

• `my_dict['key'] = 'value'`

• `my_dict.append({'key': 'value'})`

• `my_dict.insert('key', 'value')`

What is the output of the following code snippet? ```python my_list = [1, 2, 3] my_list.append(4) print(my_list) ```

• `[1, 2, 3, 4]`

• `[4, 1, 2, 3]`

• `[1, 2, 3]`

• `SyntaxError`

How do you remove the last item from a list in Python?

• `my_list.remove(-1)`

• `my_list.delete(last)`

• `my_list.pop()`

• `del my_list[-1]`

What is the correct way to concatenate two strings, `a` and `b`, in Python?

• `a + b`

• `a.concat(b)`

• `a.append(b)`

• `concat(a, b)`

How do you iterate over a list and print each element in Python?

• `for i in range(len(my_list)): print(my_list[i])`

• `for element in my_list: print(element)`

• `for my_list as element: print(element)`

• `for element in my_list: print(my_list[element])`

What is the output of the following code snippet? ```python my_dict = {'a': 1, 'b': 2, 'c': 3} del my_dict['b'] print(my_dict) ```

• `{'a': 1, 'c': 3}`

• `{'a': 1, 'b': 2}`

• `KeyError`

• `{'b': 2, 'c': 3}`

What is the correct way to format the string `"Hello, {}!"` with the name `"Alice"`?

• `"Hello, {}!".format("Alice")`

• `"Hello, {Alice}!"`

• `"Hello, " + "Alice" + "!"`

• `"Hello, %s!" % "Alice"`