ruff/docs/rules/raise-vanilla-class.md

# raise-vanilla-class (TRY002)

Derived from the **tryceratops** linter.

## What it does
Checks for code that raises `Exception` directly.

## Why is this bad?
Handling such exceptions requires the use of `except Exception`, which
captures _any_ raised exception, including failed assertions,
division by zero, and more.

Prefer to raise your own exception, or a more specific built-in
exception, so that you can avoid over-capturing exceptions that you
don't intend to handle.

## Example
```python
def main_function():
    if not cond:
        raise Exception()
def consumer_func():
    try:
        do_step()
        prepare()
        main_function()
    except Exception:
        logger.error("Oops")
```

Use instead:
```python
def main_function():
    if not cond:
        raise CustomException()
def consumer_func():
    try:
        do_step()
        prepare()
        main_function()
    except CustomException:
        logger.error("Main function failed")
    except Exception:
        logger.error("Oops")
```