import unittestdef add(x, y):return x + yclass TestAdd(unittest.TestCase):def test_add_positive(self):self.assertEqual(add(1, 2), 3)def test_add_negative(self):self.assertEqual(add(-1, -2), -3)def test_add_zero(self):self.assertEqual(add(0, 0), 0)if __name__ == '__m...
positive_int = int("+789")negative_int = int("-789")print(positive_int, negative_int) # 输出：789 -789 处理错误和异常 当尝试将非数字字符的字符串转换为整数时，Python会抛出 ValueError 异常。因此，处理这种异常是重要的编程实践。示例：try:invalid_str_to_int = int("abc")except ValueError:p...
allkernels(twice to skip confirmation).Creatednewwindowinexisting browser session.To access the notebook,openthisfileina browser:file:///home/wesm/.local/share/jupyter/runtime/nbserver-185259-open.htmlOr copy and paste oneofthese URLs:http://localhost:8888/?token=0a77b52fefe52ab83e3c35dff8de...
A positive argument scrolls up; a negative argument scrolls down. 5 应用示例 5.1 现在鼠标在哪里? 在鼠标移动时,随时显示x, y坐标。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 # from the book: Automate the Boring Stuff with Python print('Press Ctrl-C to quit.') try: while True:...
side:检测范围,为'positive'时检测突增,为'negative'时检测突降,为'both'时突增突降都检测 min_periods:参考窗中最小个数,小于此个数将会报异常,默认为None,表示每个时间点都得有值 原理: 该模型用于检测突变情况,相比于PersistAD,其抗抖动能力较强,不容易出现误报 ...
#Convert a negative number to a Positive in Python Use theabs()function to convert a negative number to a positive, e.g.abs(number). Theabs()function returns the absolute value of a number, which is guaranteed to be positive. main.py ...
text = "Python is a powerful programming language" # 使用肯定预搜索断言匹配包含 "is" 的单词 positive_result = re.findall(r'\b\w+(?= is\b)', text) # 使用否定预搜索断言匹配不包含 "is" 的单词 negative_result = re.findall(r'\b\w+(?! is\b)', text) print("肯定预搜索断言:",...
conf_matrix = pd.DataFrame(data = conf_matrix, columns=['negative','positive'], index=['negative','positive']) # plot confusion matrix plt.figure(figsize=(10, 10), facecolor='w', edgecolor='k') sns.set(font_scale=1.5) sns.heatmap(conf_matrix,cmap='coolwarm',annot=True,fmt='.5g'...
距离计算公式（前半部分为与同类positive之间的距离，后半部分计算与不同类negative的距离。）最终实现效果如下图所示，距离>1.1即可认为相互之间为不同人，即使一个人不同角度也可以被识别为同一人。3.6 人脸识别（特征分类）人脸识别中的人脸验证问题即是验证两张图片是否来自同一个人。主要有以下三种方法，欧氏...
(self, anchor, positive, negative): # anchor: 2D tensor [BATCH_SIZE, DIM] , positive: 2D tensor [BATCH_SIZE, DIM] , negative: 2D tensor [BATCH_SIZE, DIM] , DIM : feature vector dimension (e.g., 128) , BATCH_SIZE : batch size 32 , the input tensors should be normalized to [...