Answer by prosti for What is the purpose of the word 'self', in Python?
self is inevitable. There was just a question should self be implicit or explicit. Guido van Rossum resolved this question saying self has to stay. So where the self live? If we would just stick to...
View ArticleAnswer by Bugs Buggy for What is the purpose of the word 'self', in Python?
The use of the argument, conventionally called self isn't as hard to understand, as is why is it necessary? Or as to why explicitly mention it? That, I suppose, is a bigger question for most users who...
View ArticleAnswer by Akash Kandpal for What is the purpose of the word 'self', in Python?
First of all, self is a conventional name, you could put anything else (being coherent) in its stead. It refers to the object itself, so when you are using it, you are declaring that .name and .age are...
View ArticleAnswer by user441521 for What is the purpose of the word 'self', in Python?
I'm surprised nobody has brought up Lua. Lua also uses the 'self' variable however it can be omitted but still used. C++ does the same with 'this'. I don't see any reason to have to declare 'self' in...
View ArticleAnswer by skyking for What is the purpose of the word 'self', in Python?
Is because by the way python is designed the alternatives would hardly work. Python is designed to allow methods or functions to be defined in a context where both implicit this (a-la Java/C++) or...
View ArticleClik here to view.
Answer by sw123456 for What is the purpose of the word 'self', in Python?
When objects are instantiated, the object itself is passed into the self parameter. Because of this, the object’s data is bound to the object. Below is an example of how you might like to visualize...
View ArticleAnswer by ytpillai for What is the purpose of the word 'self', in Python?
Python is not a language built for Object Oriented Programming unlike Java or C++. When calling a static method in Python, one simply writes a method with regular arguments inside it. class Animal():...
View ArticleAnswer by kmario23 for What is the purpose of the word 'self', in Python?
Take a look at the following example, which clearly explains the purpose of self class Restaurant(object): bankrupt = False def open_branch(self): if not self.bankrupt: print("branch opened") #create...
View ArticleAnswer by TheEnglishMe for What is the purpose of the word 'self', in Python?
In the __init__ method, self refers to the newly created object; in other class methods, it refers to the instance whose method was called. self, as a name, is just a convention, call it as you want !...
View ArticleAnswer by Arjun Sreedharan for What is the purpose of the word 'self', in...
Let's say you have a class ClassA which contains a method methodA defined as: def methodA(self, arg1, arg2): # do something and ObjectA is an instance of this class. Now when ObjectA.methodA(arg1,...
View ArticleAnswer by dan-klasson for What is the purpose of the word 'self', in Python?
It’s there to follow the Python zen “explicit is better than implicit”. It’s indeed a reference to your class object. In Java and PHP, for example, it's called this. If user_type_name is a field on...
View ArticleAnswer by Gaurav Nishant for What is the purpose of the word 'self', in Python?
Its use is similar to the use of this keyword in Java, i.e. to give a reference to the current object.
View ArticleAnswer by ninjagecko for What is the purpose of the word 'self', in Python?
I will demonstrate with code that does not use classes: def state_init(state): state['field'] = 'init' def state_add(state, x): state['field'] += x def state_mult(state, x): state['field'] *= x def...
View ArticleAnswer by Debilski for What is the purpose of the word 'self', in Python?
Let’s take a simple vector class: class Vector: def __init__(self, x, y): self.x = x self.y = y We want to have a method which calculates the length. What would it look like if we wanted to define it...
View ArticleAnswer by kame for What is the purpose of the word 'self', in Python?
I like this example: class A: foo = [] a, b = A(), A() a.foo.append(5) b.foo ans: [5] class A: def __init__(self): self.foo = [] a, b = A(), A() a.foo.append(5) b.foo ans: []
View ArticleAnswer by Ponkadoodle for What is the purpose of the word 'self', in Python?
As well as all the other reasons already stated, it allows for easier access to overridden methods; you can call Class.some_method(inst). An example of where it’s useful: class C1(object): def...
View ArticleAnswer by Matthew Rankin for What is the purpose of the word 'self', in Python?
The following excerpts are from the Python documentation about self: As in Modula-3, there are no shorthands [in Python] for referencing the object’s members from its methods: the method function is...
View ArticleAnswer by Ming-Tang for What is the purpose of the word 'self', in Python?
self is an object reference to the object itself, therefore, they are same. Python methods are not called in the context of the object itself. self in Python may be used to deal with custom object...
View ArticleAnswer by Thomas Wouters for What is the purpose of the word 'self', in Python?
The reason you need to use self. is because Python does not use the @ syntax to refer to instance attributes. Python decided to do methods in a way that makes the instance to which the method belongs...
View ArticleAnswer by SilentGhost for What is the purpose of the word 'self', in Python?
it's an explicit reference to the class instance object.
View Article