remaining_colors = {'indigo','orange','red'}# intersection of two setscommon_colors = color_set.intersection(remaining_colors) print(common_colors)# output {'indigo'}# original set after intersectionprint(color_
许多库已经重写,以便与两个版本兼容,主要利用了six库的功能(名称来源于 2 x 3 的乘法,因为从版本 2 到 3 的移植),它有助于根据使用的版本进行内省和行为调整。根据 PEP 373(legacy.python.org/dev/peps/pep-0373/),Python 2.7 的生命周期结束(EOL)已经设定为 2020 年,不会有 Python 2.8,因此对于在 Pyth...
许多库已经重写,以便与两个版本兼容,主要利用了six库的功能(名称来源于 2 x 3 的乘法,因为从版本 2 到 3 的移植),它有助于根据使用的版本进行内省和行为调整。根据 PEP 373(legacy.python.org/dev/peps/pep-0373/),Python 2.7 的生命周期结束(EOL)已经设定为 2020 年,不会有 Python 2.8,因此对于在 Pyth...
It might help to remember—join() is the opposite of split(). >>> marxes = ['Groucho', 'Chico', 'Harpo'] >>> ', '.join(marxes) 'Groucho, Chico, Harpo' 15. Reorder items with sort() or sorted() 16.Get length with len() 17.assign with= 18.Copy with copy(), list(), or...
交并比(Intersection over Union)是目标检测NMS的依据,因此首先要搞懂交并比及其实现。 衡量边界框位置,常用交并比指标,交并比(Injection Over Union,IOU)发展于集合论的雅卡尔指数(Jaccard Index)[3],被用于计算真实边界框Bgt(数据集的标注)以及预测边界框Bp(模型预测结果)的重叠程度。
(ofs.intersection(mother)) == 0: # Offspring is homo, but opposite from parents num_errors += 2 num_ofs_problems += 1 elif len(mother) == 1 and len(father) == 1: # Mother and father are homo and different for ofs in offspring: if len(ofs) == 1: # Homo, should be het ...
A superset is the opposite of a subset. In other words, set x1 is a superset of set x2 if x1 contains every element of x2.Returning to the meal example, you can also use the superset check to determine whether you have all the required ingredients:Python >>> required_ingredients = ...
Instead of maximizing z = x + 2y, you can minimize its negative(−z = −x − 2y). Instead of having the greater than or equal to sign, you can multiply the yellow inequality by −1 and get the opposite less than or equal to sign (≤)....
face of a solid立体的面 hypotenuse斜边 included side夹边 leg三角形的直角边 medianofatriangle三角形的中线 base底边,底数(e.g.2的5次方,2就是底数) opposite直角三角形中的对边 midpoint中点 endpoint端点 vertex(复数形式vertices)顶点 tangent切线的 ...
The development of 3.0 has influenced many features in 2.6. Python 3.0 is a far-ranging redesign of Python that breaks compatibility with the 2.x series. This means that existing Python code will need some conversion in order to run on Python 3.0. However, not all the changes in 3.0 ...