WGU D335 Introduction to Programming in Python OBJECTIVE ASSESSMENT| GRADED A+

1. Which of the following code snippets correctly demonstrates the use of the decimal module to avoid floating-point precision errors when adding two decimal numbers? from decimal import Decimal num1 = Decimal('0.1') num2 = Decimal('0.2') result = num1 + num2 print(result) num1 = 0.1 num2 = 0.2 result = num1 + num2 print(f'Sum: {result}') from decimal import Decimal num1 = 0.1 num2 = 0.2 result = Decimal(num1) + Decimal(num2) print(f'Sum: {result}') from decimal import Decimal num1 = Decimal('0.1') num2 = Decimal('0.2') result = num1 * num2 print(f'Accurate product using decimal: {result}') 2. The arithmetic operators used in mathematical expressions are as follows: _____. addition uses &, subtraction uses $, multiplication uses #, division uses /, and modulo division uses ! addition uses @, subtraction uses -, multiplication uses *, division uses , and modulo division uses % addition uses +, subtraction uses -, multiplication uses *, division uses /, and modulo division uses % addition uses &, subtraction uses -, multiplication uses #, division uses /, and modulo division uses 3. What does "slicing" mean in Python? Extracting a portion of a list, tuple, or string Removing the first element of a list Sorting a list in reverse order Combining two lists into one 4. Which of the following lines of code will print the elements at indices 2, 3, and 4 from the my_list list? print (my_list[2:3] ) print (my_list(2:5) ) print (my_list[2:5] ) print (my_(2, 3) ) 5. What is the primary purpose of the pickle module in Python? To convert Python objects into a byte stream for storage or transmission To perform mathematical operations on data To manage file input and output operations To create graphical user interfaces 6. One of the ways to deal with the inaccuracies that may result from floating- point arithmetic operations is to use the decimal() method of the decimal module to round the results do the math with Decimal objects instead of floating-point numbers use the format() method of the decimal module to round the results convert the floating-point results to Decimal objects 7. Which of the following statements a), b), or c) is false? The Python Standard Library's pickle module can serialize objects into the data formats of many popular programming languages. Pickle has potential security issues. If you write your own pickling and de-pickling code, pickling can be secure. All of the above statements are true. 8. Which of the following statements is False about the Python module? Consider a module to be the same as a code library. A file containing a set of functions you want to include in your application. You can import and use built-in modules except for user-defined modules 9. What is the primary purpose of the pickle module in Python? To read and write CSV files To serialize and deserialize Python objects To perform mathematical operations To manage file input and output 10. Which of the following Python code snippets correctly prompts the user for two numbers, multiplies them, and displays the product? def multiply_numbers(): num1 = float(input('Enter the first number: ')) num2 = float(input('Enter the second number: ')) product = num1 * num2 print(f'The product of {num1} and {num2} is {product}') multiply_numbers() def multiply_numbers(): num1 = input('Enter the first number: ') num2 = input('Enter the second number: ') product = num1 + num2 print(f'The product of {num1} and {num2} is {product}') multiply_numbers() def multiply_numbers(): num1 = int(input('Enter the first number: ')) num2 = int(input('Enter the second number: ')) product = num1 - num2 print(f'The product of {num1} and {num2} is {product}') multiply_numbers() def multiply_numbers(): num1 = float(input('Enter the first number: ')) num2 = float(input('Enter the second number: ')) product = num1 / num2 print(f'The product of {num1} and {num2} is {product}') multiply_numbers() 11. What is the purpose of the 'with' statement in the following code snippet? with open('', 'r') as file: content = () print(content) To ensure the file is properly closed after its suite finishes, even if an error is raised. To create a new file if it does not exist. To read the file line by line instead of all at once. To open the file in write mode instead of read mode. 12. It is good programming practice to plan for possible exceptions and provide code t