function name starting with underscore in python
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in python, function names starting with an underscore have a specific convention and purpose. these names are often referred to as "private" or "internal" functions. while python doesn't have strict private access modifiers like some other languages, these naming conventions serve as a signal to other programmers that the function or method is intended for internal use within the module or class and is not part of the public interface.
let's dive into the details of using underscore-prefixed function names in python:
functions and methods that start with a single underscore are considered "protected". it implies that they are not intended to be used outside of their class or module.
functions and methods that start with double underscores (__) are considered "private". these are intended to be used within the class or module where they are defined and are not meant to be accessed from outside.
use underscore-prefixed names when you want to communicate to other developers that these functions are not part of the public interface and are subject to change without notice.
they can be useful for breaking down complex functions into smaller, more manageable pieces, without exposing unnecessary details to the users of your code.
let's illustrate the usage of underscore-prefixed function names with a simple python class:
in this example, _internal_variable is a protected variable, denoted by the single underscore at the beginning of its name.
similarly, _internal_method() is a protected method, indicated by the single underscore prefix.
the public_method() is a public method that can be accessed from outside the class.
inside public_method(), we can see that _internal_method() is being called. while _internal_method() is technically accessible from outside the class, it's clear from the naming convention that it's intended for internal use only.
encapsulation: using underscore-prefixed function names encourages encapsulation, allowing you to hide implementation details and ...
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