Implement a Basic Function Decorator

Summary

Create a simple decorator that modifies the return value of a function.

Problem statement

Implement a decorator named double_output. When applied to a function that returns an int or float, the decorator should return twice that numeric result. Use functools.wraps to preserve the wrapped function's __name__ and __doc__. If the wrapped function returns a non-numeric value, raise a TypeError with a clear message. Your decorator should work with positional and keyword arguments and should not modify the original function's behavior beyond doubling the return value.

Task

Write a decorator double_output that doubles the numeric result returned by the wrapped function while preserving its metadata.

Examples

Input format

A call expression of a decorated function, for example: add(2, 3)

Output format

The doubled numeric return value of the decorated function (as a number).

Constraints

- The decorator must use functools.wraps. - The decorated function will return int or float in valid inputs. - If the wrapped function returns a non-numeric value, raise TypeError. - Support arbitrary positional and keyword arguments.

Samples