Python Naming Convention > Method Naming

snake_case

Should be all in lowercase
Preferably a verb e.g. get_car(), purchase(), book()
If the name contains multiple words, it should be separated by underscores (_) e.g. get_json()

class Person:
    def get_height(self):
        return self.height

Private Method

Python does not support privacy directly. This naming convention is used as a weak internal use indicator.

Should follow the above naming conventions
Should use a leading underscore (_) to distinguish between "public" and "private" functions in a module
For more read the official python documentation.

class Person:
    def _foot_to_centimeter(self): # private method
        return self.height * 30.48