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Discover how to efficiently refactor your Python code in PyCharm by `extracting methods` and managing method calls to maintain code readability and functionality.
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Refactoring in PyCharm: Extracting Methods and Managing Calls Efficiently

Refactoring is an essential task for developers, allowing them to improve the structure and readability of their code without altering its functionality. However, certain refactoring tasks can be a bit tricky, especially when it comes to extracting methods and controlling how and where those methods are called. If you've found yourself in a similar situation while using PyCharm, rest assured that you're not alone. Here’s a step-by-step guide to help you through refactoring your Python code, particularly focusing on extracting methods and ensuring that they are called appropriately.

The Problem

In our scenario, we have a User class with a method called doStuff that performs several functionalities. The goal is to split this method into two new methods: one for calculating A and another for calculating B and C. Importantly, we don't want the original doStuff to call these new methods. Instead, we want the calling methods (callerA, callerAA, etc.) to manage the calls to the newly defined methods.

Current State of the Code

[[See Video to Reveal this Text or Code Snippet]]

Desired Outcome

After refactoring, the method should look like this:

[[See Video to Reveal this Text or Code Snippet]]

Step-by-Step Refactoring Guide

Let's break down the refactoring process into manageable steps.

Step 1: Extract Two New Methods

The first step involves extracting the existing functionality into two new methods in the User class. You can achieve this by defining methods for the different calculations.

Here's how to extract:

Identify the parts of the original doStuff method.

Create two new methods: one for calculateA and another for calculateB and calculateC.

Revised Code:

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Inline doStuff Method

Next, we need to inline the call to the doStuff method in the caller methods and replace it with the calls to the new methods.

Updated Code:

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Rename Methods

Finally, for better clarity and maintenance, you may want to rename your methods to better reflect their purpose. This makes your code more self-documenting.

Resulting Code:
Ensure your methods have meaningful names, as seen in the previous step.

Conclusion

By following these steps, you can efficiently refactor your code in PyCharm. The process involves extracting methods into cleanly defined function areas within your classes and appropriately managing their calls within your program. Doing so enhances the readability and maintainability of your code while ensuring existing functionality remains unaffected.

Feel free to explore these techniques in your next refactoring project and make full use of PyCharm’s robust features to streamline your coding efforts!