函数说明 Numpy .all () all (a, axis= None, out= None, keepdims=np._NoValue) Test whether all array elements along a given axis evaluate to True. 判断给定轴向上的所有元素是否都为True 零为False,其他情况为True 如果axis为 None ,返回单个布尔值True numpy .delete (arr, obj, axis= None) danerer的专栏.