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31 / 40Best Practices and Code StyleHardPython Basics

Predict the behavior: What will Hari's code output, and is it following best practices for readability?

def calculate_discount(price, discount_percent):
    """
    Calculate the final price after applying discount.
    
    Args:
        price: Original price
        discount_percent: Discount percentage
    
    Returns:
        Final price after discount
    """
    discount_amount = price * (discount_percent / 100)
    final_price = price - discount_amount
    return final_price

result = calculate_discount(1000, 20)
print(result)

  1. 800, and it follows best practices

  2. 200, and it violates PEP 8 conventions

  3. 1000, and the calculation is incorrect

  4. The function will raise a TypeError

Show answer & explanation

Correct answer

800, and it follows best practices

Explanation

The function calculates: 1000 * (20/100) = 200 discount, so 1000 - 200 = 800. The code follows best practices with proper docstring, spacing, and naming conventions.

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All 40 Best Practices and Code Style questions

  1. 1.What is the primary purpose of following consistent naming conventions in Python code?
  2. 2.What does PEP 8 recommend regarding the maximum line length in Python code?
  3. 3.What is the correct way to name a constant in Python according to best practices?
  4. 4.Why should you avoid using single-letter variable names in Python code?
  5. 5.What is the recommended approach for organizing imports in Python according to PEP 8?
  6. 6.What does the DRY principle stand for in software development?
  7. 7.What is the purpose of using docstrings in Python functions?
  8. 8.What is considered a best practice when writing conditional statements in Python?
  9. 9.How should you handle exceptions in Python according to best practices?
  10. 10.What is the recommended maximum number of arguments a function should have?
  11. 11.What is the purpose of type hints in Python code?
  12. 12.What does the KISS principle recommend in software development?
  13. 13.What is the recommended practice for handling mutable default arguments in Python functions?
  14. 14.What is the purpose of code reviews in software development?
  15. 15.What is considered a best practice when naming boolean variables in Python?
  16. 16.What is the primary purpose of following PEP 8 style guidelines in Python development?
  17. 17.Predict the output:
  18. 18.Which naming convention should be used for function names according to Python best practices?
  19. 19.Identify the bug:
  20. 20.What is the recommended maximum line length in Python code according to PEP 8 standards?
  21. 21.Predict the behavior:
  22. 22.Which of the following best demonstrates proper code organization and readability in Python best practices?
  23. 23.Find the error:
  24. 24.What is the purpose of using docstrings in Python functions according to code style best practices?
  25. 25.Predict the output:
  26. 26.What is the recommended approach for handling imports in a Python file following PEP 8 best practices?
  27. 27.Identify the style violation:
  28. 28.Predict the output:
  29. 29.What is the correct way to write a docstring for a function according to Python best practices?
  30. 30.Find the bug:
  31. 31.Predict the behavior:
  32. 32.Which of the following code snippets best demonstrates proper error handling and code style in Python?
  33. 33.Identify the violation:
  34. 34.Predict the output:
  35. 35.What are the key principles for writing maintainable and readable Python code according to best practices?
  36. 36.What is the primary purpose of following PEP 8 style guidelines in Python development?
  37. 37.Predict the output and identify the style issue in the following code snippet written by Hari
  38. 38.What should Prasath do to improve code readability when dealing with long function parameter lists?
  39. 39.Predict what issue Deepak will encounter when reviewing this code for style compliance
  40. 40.What is the correct approach for organizing imports and what does Ravi need to fix in this code structure?