How to avoid having class data shared among instances?
What I want is this behavior:
class
Why do Python classes inherit object?
Why does the following class declaration inherit from object?
What is the difference between old style and new style classes in Python?
What is the difference between old style and new style classes in Python? When should I use one or the other?
How can I call a function within a class?
I have this code which calculates the distance between two coordinates. The two functions are both within the same class.
What is a clean “pythonic” way to implement multiple constructors?
I can’t find a definitive answer for this. As far as I know, you can’t have multiple __init__ functions in a Python class. So how do I solve this problem?
Instance variables vs. class variables in Python
I have Python classes, of which I need only one instance at runtime, so it would be sufficient to have the attributes only once per class and not per instance. If there would be more than one instance (which won’t happen), all instance should have the same configuration. I wonder which of the following options would be better or more “idiomatic” Python.
How do I call a parent class’s method from a child class in Python?
When creating a simple object hierarchy in Python, I’d like to be able to invoke methods of the parent class from a derived class. In Perl and Java, there is a keyword for this (super). In Perl, I might do this:
How to invoke the super constructor in Python?
class A: def __init__(self): print("world") class B(A): def __init__(self): print("hello") B() # output: hello In all other languages I’ve worked with the super constructor is invoked implicitly. How does one invoke it in Python? I would expect super(self) but this doesn’t work. Answers: Thank you for visiting the Q&A section on Magenaut. Please note that … Read more
Why is the id of a Python class not unique when called quickly?
I’m doing some things in Python (3.3.3), and I came across something that is confusing me since to my understanding classes get a new id each time they are called.
How to create a custom string representation for a class object?
Consider this class: