Check for indentation, spacing, and syntax errors in the provided Python code.
Do not modify logic, naming or structure.
If there are issues, return the fully corrected code.
If everything is correct, just say so.

Please write all comments and explanations in Russian briefly and concisely,
but at the same time keep in mind that I have almost no experience in creating code.
If possible, offer an example of correcting lines of code or logic,
but do not rewrite the entire file.
If changes are not required, do not rewrite the code.