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Why should you avoid using single-letter variable names in Python code?

  1. They increase the file size of the Python script

  2. They make the code run slower during execution

  3. They reduce code readability and make the purpose of the variable unclear

  4. They are not compatible with Python 3

Show answer & explanation

Correct answer

They reduce code readability and make the purpose of the variable unclear

Explanation

Single-letter variable names (except for loop counters like i, j) reduce code clarity and make it harder to understand what the variable represents.

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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?