Can anyone explain it briefly, How it will print Welcome?

Question

if __name__== "__main__":
print("Hi")
else:
print("Welcome")

Answer 1

if __name__ == "__main__"

these lines are used to determine if the module was included in another file, or run by itself.

if __name__ is indeed __main__ then it means the script is the "main" script running, i.e. you ran it on it's own. this is often used to execute some example code for a library/module.

if __name__ is not __main__ this means you have included the script as a module in another script. this means the code after the if statement will not execute.

Answer 2

== stands for equal , basically you are telling the program if the name is equal to main print hi, if it is not equal print welcome