集合difference_update()方法修改了现有集合。如果执行(AB),则将A修改为(AB);如果执行(BA),则将B修改为(BA)。 用法: A.difference_update(B)for (A - B)B.difference_update(A)for (B - A) 该函数返回None并更改现有集合的值。在此示例中,我们将获得两组之间的差异,并显示difference_update的工作原理。
A.difference_update(B) for (A - B) B.difference_update(A) for (B - A) 该函数返回None并更改现有集合的值。 在此示例中,我们将获得两个集合之间的差异,并显示difference_update的工作方式。 # Python代码使用set A和set B之间的difference_update()获得两个set之间的差异 # 测试代码 A = {10, 20...
"None" = "无 " "ReWire unavailable" = "重新布线不可用 " "No device open" = "没有设备打开 " "Note: these channel lists may be blank when the device\'s UI is not running" = "注:可能是空白的,没有运行设备的用户界面时,这些频道列表 " ...
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error C2471: cannot update program database error C2664: 'int swscanf_s(const wchar_t *,const wchar_t *,...)' : cannot convert argument 1 from 'const TCHAR *' to 'const wchar_t *' error C2665: 'CObject::operator new' : none of the 3 overloads could convert all the argument ...