Python provides built-in functions to find the intersection and union of two sets or lists. These functions areintersectionandunion. In this article, we will explore these functions and see how they can be used in various scenarios. Intersection Theintersectionfunction returns a new set or list ...
''' # 1.找出a和b中都包含了的元素 # set类intersection()函数来获取两个集合的交集 print(list(set(a) .intersection(set(b))) # 2.a或b中包含的所有元素 # 交集 union print(list(set(a). union(set(b))) # 3.a中包含⽽集合b中不包含的元素 # 差集 print(list(set(a) ^ set(b))) 世...
set1 -- 必需,合并的⽬标集合 set2 -- 可选,其他要合并的集合,可以多个,多个使⽤逗号 , 隔开。 ''' # 1.找出a和b中都包含了的元素 # set类intersection()函数来获取两个集合的交集 print(list(set(a) .intersection(set(b))) # 2.a或b中包含的所有元素 # 交集 union print(list(set(a). ...
python的集合set和其他语言类似,是一个无序不重复元素集, 可用于消除重复元素。 支持union(联合), intersection(交), difference(差)和sysmmetric difference(对称差集)等数学运算。 不支持 indexing, slicing, 或其它类序列(sequence-like)的操作。因为,sets作为一个无序的集合,sets不记录元素位置或者插入点。 下面...
python 并集union, 交集intersection, 差集difference, 对称差集symmetric_difference a,b,c = [1,2,3],[2,3,4],[3,4,5] print('--->union') print('a,b取并集:',set(a).union(b)) print('a,b取并集:',set(a)|set(b)) print('a,b,c取并集:',set(a).union(b,c)) print('a,b,...
Last update on January 06 2025 13:35:54 (UTC/GMT +8 hours) Write a Python program that performs common set operations like union, intersection, and difference of two frozensets. Sample Solution: Code: defmain():frozenset_x=frozenset([1,2,3,4,5])frozenset_y=frozenset([0,1,3...
4. Counter Union/Intersection/DifferenceWrite a Python program that creates two 'Counter' objects and finds their union, intersection, and difference.Sample Solution:Code:from collections import Counter # Create two Counter objects ctr1 = Counter(x=3, y=2, z=10) ctr2 = Counter(x=1...
简介:本文将介绍如何使用Python计算图像分割中的IOU(Intersection over Union),并给出示例代码。IOU是一种评估图像分割算法性能的重要指标,用于衡量预测的分割区域与实际分割区域的重叠程度。通过计算IOU,我们可以了解算法的准确性和鲁棒性,进而优化算法以提高分割效果。
def bb_intersection_over_union(boxA, boxB): boxA = [int(x) for x in boxA] boxB = [int(x) for x in boxB] xA = max(boxA[0], boxB[0]) yA = max(boxA[1], boxB[1]) xB = min(boxA[2], boxB[2]) yB = min(boxA[3], boxB[3]) interArea = max(0, xB - xA...
python程序实现 具体实现过程请移步:https://www.pyimagesearch.com/2016/11/07/intersection-over-union-iou-for-object-detection/ 代码语言:javascript 代码运行次数:0 运行 AI代码解释 defbb_intersection_over_union(boxA,boxB):# determinethe(x,y)-coordinatesofthe intersection rectangle ...