1 2 if __name__ == '__main__': # some logic here Every Python module defines a variable called __name__. It can either contain module name or __main__ depending upon how a module is executed.We can execute a Python file (or module) in two ways:...
What is if __name__ == "__main__"? By: Rajesh P.S.In Python, the __name__ attribute is a special built-in variable that holds the name of the current module or script. When the Python interpreter runs a script or module, it assigns the value __main__ to the __name__ ...
Every module in Python has a special attribute called __name__. The value of __name__ attribute is set to '__main__' when module run as main program. Otherwise, the value of __name__ is set to contain the name of the module....
What Does if __name__ == "__main__" Mean in Python? Theif __name__ == "__main__"idiom is a Python construct that helps control code execution in scripts. It’s a conditional statement that allows you to define code that runs only when the file is executed as a script, not ...
Today, let’s discuss something that’s all over the place in many code bases: what doesif __name__ == '__main__'do in Python? The statementif __name__ == '__main__':checks if variable__name__is set to the string value'__main__'which holds only within the main source fil...
$ python __name__main.py The value of __name__ is __main__ Instead, the value of __name__ if we import the module via the Python shell is __name__main ?>>> import _name_main __name__ value is __name__main So, the value of __name__ varies depending on how our Python...
python中的if __name__ == '__main__' what hell is it? python认为一切模块都可能被执行或者被import 如果一个模块是被import导入的,那么该模块的调用者可能仅仅希望使用模块的部分代码,而不是直接运行它 如果模块是直接运行的,那么像c或者java语言一样,需要一个入口main ...
Python'sif __name__ == '__main__':in action The exact syntax of Python'sif name equals mainconstruct, demonstrated ina simple Hello World program, is as follows: if__name__=="__main__":print("Hello World") Copy If a file containing this code was run directly on the Python runti...
print("Chat server is listening...") Step 4- Define thehandle_clientFunction def handle_client(client_socket): while True: try: data = client_socket.recv(1024) if not data: break for client in clients: client.send(data) except:
This is the second line This is the third line""" To make sure we are on the same page, when we want Python to output a string to the console we use theprint()function. Theprint()function takes a value, tries to convert it to a string if it isn’t one already, and then write...