在Python代码中,经常会碰到类似if __name__ == "__main__"的句式,本文通过简单实例阐述这一句式的作用及其应用场景。首先明确__name__与__main__都是特殊的Python变量。当我们直接运行一个脚本时,脚本内的__name__变量被赋予__main__的值。以脚本 first.py 运行为例: 若我们通过终端执行,输出结果中展示...
对于B选项,if - else 语句最多只能检查两个条件满足的情形,条件超过两个则无法检查,故B错误。 对于C选项,需要检查超过两个的情形,为此可使用Python提供的if-elif-else语句,故C正确 对于D选项,while循环不能检查超过两个条件满足的情形,故D错误 所以需要检查超过两个的情形时,可使用Python提供的if-elif-else语句...
When dealing with multiple conditions that need to be evaluated, Python’sif-elif-elsestructure is particularly useful. Theelifclause (short for “else if”) allows you to specify additional conditions to check if the initialifcondition is not met. This enables a more structured and efficient way...
Apologies if this sounds like a stupid question, but I'm just curious. Say I have this: See my understanding of async/await is that the UI becomes responsive as soon as an await is hit. So in theory, ... Printing object attributes based on user input in Python 3x ...
Python Conditional Statements Test your understanding of Python conditional statements What’s Included: 7 Lessons Video Subtitles and Full Transcripts Accompanying Text-Based Tutorial Interactive Quiz to Check Your Progress Q&A With Python Experts: Ask a Question Certificate of Completion Related Learning...
以下为一个简单的Python程序,请完成代码的编写并运行输出结果。 ```python name = input("请输入您的姓名:") age = int(input("请输入您的年龄:")) print("您好,", name) print("您的年龄是:", age) if age >= 18: print("您已成年。") else: print("您还未成年。") ``` 查看本题试卷 pyt...
【题目】列举Python程序设计语言中,IF语句的三种常见格式。 答案 【解析】单分支语句格式:If(条件表达式):语句A双分支if语句格式:If(条件表达式):语句Aelse:语句Bif.elif..else语句格式If(条件表达式):语句1elif:语句2elif:语句Nelse:语句N+1相关推荐 1【题目】列举Python程序设计语言中,IF语句的三种常见格式。反...
Python中基于各种条件的If else逻辑Pandas允许写复杂的自定义项.在跳转到代码之前，不确定输出数据是否错误...
__name__属性是Python的一个内置属性，记录了一个字符串。若是在当前文件，__name__ 是__main__。
In this course, while exploring thepython bitwise operators,python boolean operatorsandpython comparison operators,you must have noticed one thing: the conditional statements. In the examples in which we dealt with these operators, the operators were absorbed inside"if ", "else-if" and other condit...