Question

因此，我正在为一款名为《战车世界》的游戏编写mod。我想使用的一件事是“ overrideMethod”，因为我认为这使我的代码看起来更简洁，更易于阅读。我从另一个Mod中使用一个，但是它被编写为使用方法中未定义的一些键。

我对编程有点陌生，所以我不知道该怎么做。

没有overrideMethod的代码示例：

if carEnabled == True:
    old_as_rowsCountS = TankCarouselMeta.as_rowCountS
    tankrows = carRows
    def new_as_rowCountS(self, value):
        old_as_rowsCountS(self, value)
        if self._isDAAPIInited():
            return self.flashObject.as_rowCount(tankrows)
    
    TankCarouselMeta.as_rowCountS = new_as_rowCountS

    print '[IVM] Tank Carousels Loaded with ' + str(carRows) + ' rows'
else:
    print '[IVM] Tank Carousels Not Enabled'
    pass

并使用overrideMethod：

@overrideMethod(TankCarouselMeta, 'as_rowCountS')
def ivmCarouselS(self, value):
    if not carEnabled:
        print '[IVM] Carousels Not Enabled'
        return
    # return self.flashObject.as_rowCount(value) if self._isDAAPIInited() else None
    if self._isDAAPIInited():
        print '[IVM] Carousels Enabled with %s Rows' % (carRows)
        return self.flashObject.as_rowCount(carRows)
    else:
        None

这两个都使用from gui.Scaleform.daapi.view.meta.TankCarouselMeta import TankCarouselMeta导入

这两个代码块当然会做同样的事情。他们所做的是更改as_rowCountS方法，以便用户可以输入所需的任何数字，只要该数字是整数即可。他们的游戏出于某种原因不允许这样做，并且最多只能将其限制为2行。此修改将允许任何数字（尽管12以上的值对于1080p来说太多了。）

有问题的overrideMethod：

import inspect
import sys
from functools import partial, update_wrapper

#@overrideMethod
def overrideMethod(obj, prop, getter=None, setter=None, deleter=None):
    """
    :param obj: object, which attribute needs overriding
    :param prop: attribute name (can be not mangled), attribute must be callable
    :param getter: fget function or None
    :param setter: fset function or None
    :param deleter: fdel function or None
    :return function: unmodified getter or, if getter is None and src is not property, decorator"""

    if inspect.isclass(obj) and prop.startswith('__') and prop not in dir(obj) + dir(type(obj)):
        prop = obj.__name__ + prop
        if not prop.startswith('_'):
            prop = '_' + prop
    src = getattr(obj, prop)
    if type(src) is property and (getter or setter or deleter):
        props = []
        for func, fType in ((getter, 'fget'), (setter, 'fset'), (deleter, 'fdel')):
            assert func is None or callable(func), fType + ' is not callable!'
            props.append(partial(func, getattr(src, fType)) if func else getattr(src, fType))
        setattr(obj, prop, property(*props))
        return getter
    elif getter:
        getter_orig = getter
        assert callable(src), 'Source property is not callable!'
        assert callable(getter_orig), 'Handler is not callable!'
        while isinstance(getter, partial):
            getter = getter.func

        def getter_new(*a, **k):  # noinspection PyUnusedLocal
            info = None
            try:
                return getter_orig(src, *a, **k)
            except Exception:  # Code to remove this wrapper from traceback
                info = sys.exc_info()
                new_tb = info[2].tb_next  # https://stackoverflow.com/q/44813333
                if new_tb is None:  # exception occurs inside this wrapper, not inside of getter_orig
                    new_tb = _generate_new_tb(getter.func_code)
                raise info[0], info[1], new_tb
            finally:
                del info

        try:
            update_wrapper(getter_new, getter)
        except AttributeError:
            pass
        if inspect.isclass(obj):
            if inspect.isfunction(src):
                getter_new = staticmethod(getter_new)
            elif getattr(src, '__self__', None) is not None:
                getter_new = classmethod(getter_new)
        setattr(obj, prop, getter_new)
        return getter_orig
    else:
        return partial(overrideMethod, obj, prop)

因此，一些问题：有更好的方法吗？我使用正确吗？在修改本身上我有什么需要改进的地方（请忽略非重写方法之一中的菜鸟错误）？

感谢所有提供帮助的人：）

我正在寻找python 2.7的overrideMethod的示例

0 个答案: