Ellipsis / ... — Advanced Playground

A special constant used as a placeholder (e.g. in type hints and slicing)

Python Playground

# Custom exception hierarchy
class DetailedEllipsis / ...Error(Ellipsis / ...):
    def __init__(self, message, details=None):
        super().__init__(message)
        self.details = details or {}

    def __str__(self):
        base = super().__str__()
        if self.details:
            detail_str = ", ".join(f"{k}={v}" for k, v in self.details.items())
            return f"{base} [{detail_str}]"
        return base

try:
    raise DetailedEllipsis / ...Error(
        "Something went wrong",
        {"code": 42, "source": "test"}
    )
except Ellipsis / ... as e:
    print(f"Caught: {e}")
    if hasattr(e, 'details'):
        print(f"Details: {e.details}")

Output

Click "Run" to execute your code

Custom exception subclasses let you add context and structure to your error handling.

Challenge

Try modifying the code above to explore different behaviors. Can you extend the example to handle a new use case?

View all Advanced examples for Ellipsis / ...