add a protected static method to a class in python

To add a protected static method to a Python class, you can use the @staticmethod decorator and the underscore (_) convention to indicate that the method should be considered protected:

main.py
class MyClass:
    @staticmethod
    def _my_protected_static_method():
        # do something
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In this example, we've defined a static method called _my_protected_static_method() within the MyClass class. The underscore at the beginning of the method name is a convention in Python to indicate that the method should not be accessed from outside the class (i.e. it should be protected). By defining the method as static using the @staticmethod decorator, we can call it directly on the class without having to create an instance of the class.

Note that this is only a convention in Python, and the method can still be accessed from outside the class if someone really wants to. It's important to keep in mind that encapsulation in Python is not as strict as in some other object-oriented languages.