__name__ __main__

Question

Обшарил весь интернет, ну никак не пойму для чего нужно:

If __name__ == "__main__"

Типо чтобы программа, в какой-то момент выполняла только "свой код", без импортированных модулей?
Типо разделитель?

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Searched the entire Internet, well, I do not understand this line:

If __name__ = = "__main__"

As like, to program, in some moment fulfilled only "its code", without imported modules?
Like a separator?

Answer 1

Jay, I know it, but for what? What is the main idea of __name__ == __main__?
To separate peace of code, which will run (as a module) and not run(as a main code) , when we imports this project to another project?

Answer 2

For example:

# project_1

def checker() :
If name == "__main__":
print ("it's native code")
If True:
print ("only for import")

###prints both
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# project_2

Import project_1
project_1.checker()

###prints "only for import"