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8 maj 2019 · You can only use self in a context where it's defined. There's a self defined inside your __init__ and login_or_exist functions, but not at the top-level where you're running the first_class(self.Bank_Users.keys(), ...).
Default argument values are evaluated at function define-time, but self is an argument only available at function call time. Thus arguments in the argument list cannot refer each other. It's a common pattern to default an argument to None and add a test for that in code:
29 wrz 2016 · self is the self-reference in a Class. Your code is not in a class, you only have functions defined. You have to wrap your methods in a class, like below. To use the method main(), you first have to instantiate an object of your class and call the function on the object.
10 kwi 2024 · The "NameError: name 'self' is not defined" occurs for multiple reasons: Forgetting to specify the self argument in a method. Trying to use self.attribute as a default value in a method argument. Trying to access self outside of a method. Here is an example of how the error occurs. main.py.
17 sie 2020 · You encounter the “NameError: name ‘self’ is not defined” error if you: Do not specify “self” as an argument. Use “self” as an argument in another argument. Let’s walk through each of these scenarios one-by-one.
In this tutorial, you'll learn how to use the Self type hint in Python to annotate methods that return an instance of their own class. You'll gain hands-on experience with type hints and annotations of methods that return an instance of their class, making your code more readable and maintainable.
Learn how to fix the 'self is not defined' error in Python. This common error can occur when you're trying to access a class member from outside the class definition. Here's a quick guide to help you troubleshoot the issue and get your code working again.
