Feature Request: Improve Structure View with Custom Section Support

Dear JetBrains PyCharm Team,

I would like to suggest an improvement to the Structure View in PyCharm.

The current Structure View is very useful because it provides a clear overview of classes, functions, and other code elements. However, it only displays automatically detected code structures. For larger files, it would be helpful to allow users to add custom section titles to organize the view.

For example:

# SECTION: Data Loading

def load_data():
    pass


# SECTION: Data Processing

def clean_data():
    pass


# SECTION: Model Calculation

def calculate_result():
    pass

The Structure View could display:

Data Loading
    load_data()

Data Processing
    clean_data()

Model Calculation
    calculate_result()

This would make the Structure View more flexible without changing the code execution or language syntax. User-defined sections could simply act as organizational nodes in the tree.

Classes and functions are already displayed as structural elements. Adding section titles would provide another useful layer of organization, especially for files that are large but still logically belong together and do not need to be split into multiple modules.

A possible implementation could be based on a customizable comment pattern, similar to the existing TODO feature.

Thank you for considering this improvement.

Best regards