import functools
import inspect
 
 
def type_checking(f):
    sig = inspect.signature(f)
    @functools.wraps(f)
    def wrapper(*args, **kwargs):
        bound = sig.bind(*args, **kwargs)
        for k, v in bound.arguments.items():
            if not isinstance(v, sig.parameters[k].annotation):
                raise TypeError()
        return_value = f(*args, **kwargs)
        if not isinstance(return_value, sig.return_annotation):
            raise TypeError()
        return return_value
    return wrapper
 
 
@type_checking
def double(x: int) -> int:
    return x * 2
 
print(double('a'))
 

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