What does __ all __ do in Python?

What is the purpose of __ main __?

Python files can act as either reusable modules, or as standalone programs. if __name__ == “main”: is used to execute some code only if the file was run directly, and not imported.

Why is __ name __ used in Python?

__name__ is a built-in variable which evaluates to the name of the current module. Thus it can be used to check whether the current script is being run on its own or being imported somewhere else by combining it with if statement, as shown below.

What is __ import __ in Python?

__import__() Parameters name - the name of the module you want to import. globals and locals - determines how to interpret name. fromlist - objects or submodules that should be imported by name. level - specifies whether to use absolute or relative imports.

Is __ init __ py necessary?

If you have setup.py in your project and you use find_packages() within it, it is necessary to have an __init__.py file in every directory for packages to be automatically found.