Clean Code in Python

Good uses for decorators

In this section, we will take a look at some common patterns that make good use of decorators. These are common situations for when decorators are a good choice.

From all the countless applications decorators can be used for, we will enumerate a few, the most common or relevant:

• Transforming parameters: Changing the signature of a function to expose a nicer API, while encapsulating details on how the parameters are treated and transformed underneath
• Tracing code: Logging the execution of a function with its parameters
• Validate parameters
• Implement retry operations
• Simplify classes by moving some (repetitive) logic into decorators

Let's discuss the first two applications in detail in the following section.