__name__ is a path where the script, module or package is.
And this repository shows you how __name__ works.
$ git clone https://github.com/niconico25/__name__
$ python3 script.py
__file__: script.py
__name__: __main__
__file__: /Users/user/__name__/package0/__init__.py
__name__: package0
__file__: /Users/user/__name__/package0/module1.py
__name__: package0.module1
__file__: /Users/user/__name__/package0/package1/__init__.py
__name__: package0.package1
__file__: /Users/user/__name__/package0/package1/module2.py
__name__: package0.package1.module2
$ tree
$ tree
.
├── script.py
└── package0
├── __init__.py
├── module1.py
└── package1
├── __init__.py
└── module2.py
2 directories, 5 files
$
__name__
The__name__attribute must be set to the fully-qualified name of the module. This name is used to uniquely identify the module in the import system.