python： if __name__ == "__main__" 到底是什么鬼？就是区分直接执行还是import引用了，在运维py...
Understanding Python’sif __name__ == "__main__"idiom will help you to manage script execution and module imports effectively. In this tutorial you’ll explore its mechanics, appropriate usage, and best practices. Take the Quiz:Test your knowledge with our interactive “Python Name-Main Idiom...
Python has a large number of special variables that begin and end with double underscores. They are referred to as dunder to keep it brief (from Double Underscores). In this case, "__name__" is pronounced "dunder name."Let's use the Python shell to determine what the value of __main...
The statementif __name__ == '__main__':checks if variable__name__is set to the string value'__main__'which holds only within the main source file from which you initially execute your code. In all other contexts—such as in imported code files—the variable__name__is set to a d...
deffun_name(x):'apply operation + to argument'return(x+x)print(fun_name(2))#4 判别素数的函数 frommathimportsqrtdefisprime(x):ifx==1:returnFalse k=int(sqrt(x))foriinrange(2,k+1):ifx%i==0:returnFalsereturnTrueforiinrange(2,20):ifisprime(i):print(i,end='') ...
Python Lambda with Multiple Arguments Python map() with Lambda Function Using filter() with Lambda in Python Python if __name__ == “__main__”: Explain? Python Nested if else Statement Examples Python if else Statement with Examples
Why am I getting this error: Cannot find an overload for 'contains' that accepts an argument type '[Vetex], Vertex' Your Vertex class should confirm to Equatable protocol. This is a good tutorial : Sw... Python code and SQLite3 won't INSERT data in table Pycharm?
- -```python import asyncio from datetime import timedelta @@ -52,6 +42,6 @@ async def request_handler(context: BeautifulSoupCrawlingContext) -> None: # Run the crawler with the initial list of URLs. await crawler.run(['https://crawlee.dev']) + if __name__ == '__main__': ...
<Mock name='mock.do_something()' id='4394778920'> 1. 2. 3. 4. 由于Mock可以动态创建任意属性,因此它适合替换任何对象。 使用前面的示例,如果您要模拟json库并调用dumps(),Python mock对象将创建该方法,以便其接口可以与库的接口匹配: >>> json = Mock() ...
临时修改ifconfigens33iporifconfigens33:0iporifconfigens33:1ip永久修改 方法1.命令nmtui 方法2.ifconfigvim /etc/sysconfig/network-scripts/ifcfg-ens33按i进入insert模式,修改后按esc,再按:wq。 重启网络服务 service network linux基础科普看这一篇就够了 ...