The equality operator (==) tests if two variables have an equal value. Given variable x=3 and y=3, we can test for equality using the statement if x == y, which will return true. If we change either x or y, it would return false. It looks like the assignment operator (=) , b...
Check if Variable is String in Python Read more → How to Get Variable Name as String in Python Read more → 5. Checking None in a Conditional Expression Inline None checks are used while filtering data from list, dictionaries, set. Let’s see with help of example: Filtering the list...
Theif __name__ == ‘__main__’conditional statement is aPython programmingconstruct that controls the execution of a script. When a Python script is run, the interpreter sets thename variableto the string ‘__main__‘ if the script is the main program being executed. If the file is be...
Python’sif __name__ == "__main__"idiom allows code to runonly when the script is executed, not when it’s imported. The idiom checks ifthe__name__variable equals"__main__", confirming that the script is thetop-level module. ...
1.Python条件语句Python条件语句是通过一条或多条语句的执行结果(True或者False)来决定执行的代码块。...可以通过下图来简单了解条件语句的执行过程:图片Python程序语言指定任何非0和非空(null)值为true,0 或者 null为false。...Python 编程中 if 语句用于控制程序的执行,基本形式为:if 判断条件: 执行语句……else...
typeof(variable); Example 1:str = "This is my place."; if (typeof str == String) { console.log('The variable is a String.'); } else { console.log('The variable is not a String.'); } Output:The variable is not a String. ...
Python'sif __name__ == "__main__"is useful to include code that's executed only when a script is run directly but not when it's imported. The Python interpreter sets the__name__variable to the name of the module if it's imported and to the string"__main__"if the module is ...
With the print statement positioned under theif name equals mainblock, the developer protects the print statementfrom being executed as unguarded, top-level code. How does Python's__name__variable work? The__name__variable is a special attribute managed by the Python runtime. ...
Stringkeyword="example"; 1. 2. 编写if判断语句 接下来,我们需要编写if判断语句。这个语句将根据keyword变量的值来决定是否执行某些操作。 if(keyword.equals("example")){// 条件满足时执行的代码} 1. 2. 3. 3. 编写跳过关键字的逻辑 在if语句的代码块中,我们可以编写需要跳过的代码。如果keyword的值等于"...
在C#中,可以使用多种方法来简化IF ELSE语句,以下是几种常见的方法: 1. 使用三元运算符(Ternary Operator): 三元运算符可以在一行代码中实现简单的条件判断。它的语法是...