print("before __name__ guard") if __name__ == '__main__': functionA() functionB() print("after __name__ guard") Special Variables When the Python interpeter reads a source file, it first defines a few special variables. In this case, we care about the__name__variable. When ...
if __name__=="__main__": 语句之前和之后的代码都被执行。 第二种情况: importmain_test#导入main_test文件if__name__=='__main__':print('main_test2')#当单独执行该文件时,即python mian_test2.py,输出结果"""first# main_test模块中的printmain_test# 当main_test被导入时, main_test.py中p...
EM算法 - 高斯混合模型: EM算法,于其说它是一种算法,不如说它是一种思路,具体到高斯混合模型,可以用下面的代码来实现它的EM算法,但是对于其它的分布来说,也可以使用EM算法,比如K-means算法实际上也是使用了EM算法的思路。 ''' EM算法 --- 数据集:两个生成的正态分布 训练集数量:10000 --- 训练结果: 时...
@app.function_name(name="HttpTrigger1") @app.route(route="hello") def test_function(req: func.HttpRequest) -> func.HttpResponse: logging.info('Python HTTP trigger function processed a request.') name = req.params.get('name') if not name: try: req_body = req.get_json() except Valu...
(fn, name):start = perf_counter() result = fn(DATA) duration = perf_counter() - start print('{} took {:.3f} seconds\n\n'.format(name, duration))fordinresult:assert-1<= d <=1," incorrect values"if__name__ =="__main__": print('Running benchmarks with COUNT = {}'....
name = tuple(['Tom', 'Tony', 'Allen', 'Cydin', 'Lucy', 'Anna']) print(name) x = input() if x in name: print('Congratulations!') else: print('What a pity!') 5.牛牛有一个元组,其中记录数字1-5,请创建该元组,并使用len函数获取该元组的长度。 牛牛觉得这个元组太短了,想要在该元...
plt.show()if__name__=='__main__': main() 四、实验步骤 (1)引入数据,数据标准化 因为数据是面试中的得分,量纲相同,并且数据的分布无异常值,所以数据可以不进行标准化。 (2)建立相关系数矩阵 计算皮尔森相关系数,从热图中可以明显看出变量间存在的相关性。
Scalable, Portable and Distributed Gradient Boosting (GBDT, GBRT or GBM) Library, for Python, R, Java, Scala, C++ and more. Runs on single machine, Hadoop, Spark, Dask, Flink and DataFlow - xgboost/python-package/xgboost/core.py at master · dmlc/xgboos
Or if I wanted to access say the first or the last element of that string,I can use my common generic sequence operations. 我也会做切片。 I can also do slicing. 所以我可能想从字符串的最开始开始,取前三个对象。 So I might want to start from the very beginning of the string and take...
Although, we wouldn’t typically do this in a Python program,for us to really see the content of that range object,so what we can do in this case is we can turn it into a list. 所以如果我们说“范围5列表”,我们会看到范围对象由五个数字组成,从0到4。 So if we say "list of range ...