> tabs for indentation I don’t know a single Python project that does it. You can’t mix space and tabs for indentation. 4 spaces is the default for Python for

> tabs for indentation I don’t know a single Python project that does it. You can’t mix space and tabs for indentation. 4 spaces is the default for Python formatters like black, ruff (not sure whether it is configurable—never tried to change). Big indent is a feature—deep nesting is a code smell.