adventurelib.py 文件源码

def _register(command, func, kwargs={}):
    """Register func as a handler for the given command."""
    pattern = Pattern(command)
    sig = inspect.signature(func)
    func_argnames = set(sig.parameters)
    when_argnames = set(pattern.argnames) | set(kwargs.keys())
    if func_argnames != when_argnames:
        raise InvalidCommand(
            'The function %s%s has the wrong signature for @when(%r)' % (
                func.__name__, sig, command
            ) + '\n\nThe function arguments should be (%s)' % (
                ', '.join(pattern.argnames + list(kwargs.keys()))
            )
        )

    commands.append((pattern, func, kwargs))