How you lay out your code has a huge role in how readable it is. Vertical whitespace, or blank lines, can greatly improve the readability of your code. Code that’s bunched up together can be overwhelming and hard to read. Similarly, too many blank lines in your code makes it look very sparse, and the reader might need to scroll more than necessary.
For functions, have two blank lines above and below:
Use blank lines sparingly inside functions to show clear steps. Sometimes, a complicated function has to complete several steps before the return statement. To help the reader understand the logic inside the function, it can be helpful to leave a blank line between each step.
An even better way would be to put comments where the blank lines are: