DEV Community

Cover image for Introduction to Clean Code in Python
Om singh
Om singh

Posted on

Introduction to Clean Code in Python

  1. Introduction:
  2. Worked with Python and Airflow for dynamically creating data pipelines based on configurations defined in a web application
  3. Shared insights about Clean Code techniques for diverse data engineering teams in an article series

  4. Technical debt, the silent evil:

  5. Primary challenge revolved around accumulation of technical debt

  6. Technical debt occurs when coding decisions make the code harder to change in the future

3.** Why Clean Code?:**

  • Motivation for embracing Clean Code was to mitigate technical debt and it offers additional benefits
  • Quality code enhances estimation accuracy, facilitating steady and predictable delivery of features
  1. When Clean Code Might Not Be Appropriate:
  2. Clean Code may not be the best choice for every project
  3. Not suitable for single-use scripts, proof of concepts, prototypes and legacy code slated for deprecation

  4. Code Formatting and Tools:

  5. Importance of code formatting and layout in reaching a quality codebase

  6. Introduction to coding standard PEP-8 and its benefits for consistency and error identification

6.** Documentation Best Practices:**

  • Importance of well-documented code and usage of tools like docstrings and annotations
  • Clear guidelines for good documentation in Python using docstrings and annotations

7.** Docstrings:**

  • Explanation of usage and importance of docstrings in documenting code logic
  • The way to add docstrings to the codebase and use of automated documentation tools like sphinx
  1. Annotations:
  2. Introduction to annotations as a tool for documenting code in Python
  3. Explanation of how annotations reduce possibility of errors and aid in automatic type checking

  4. Automatic code formatting with black:

  5. Recommend using black for automatic code formatting.

  6. Black ensures consistent code layout and formatting, reducing git diffs and allowing more effective code reviews.

  7. Static type checking with mypy:

  8. Mypy is recommended for static type checking.

  9. It helps detect bugs early in development but does not enforce type restrictions in Python.

  10. Generic types and type hints:

  11. Type hinting with generic types like Any or Iterable can silently ignore errors.

  12. It's important to use more specific types to avoid such issues.

  13. Linters and code analysis with pylint:

  14. Pylint is recommended for more advanced code analysis beyond PEP-8 standards.

  15. It can validate imports, detect code smells, and provide suggestions for refactoring.

13.** Automating checks using Makefiles:**

  • Using Makefiles to automate the execution of tools is recommended.
  • It allows the configuration of commands for easier availability and execution in CI builds.
  1. Conclusion:
  2. Clean Code goes beyond formatting and layout; it's about setting a coding style standard and implementing automatic checks and good documentation practices.
  3. The next part of the series will focus on Python idioms and design principles.

  4. Alejandro Machado's Joining Date:

  5. Alejandro Machado joined on Feb 28, 2024.

  6. A comment was made on Mar 7 saying 'That's great! Thanks!'

Top comments (0)