I am trying to create a temperature conversion module. My class is set up as below: I then try to convert using the following: The original prints work but the conversion has the error: NameError: name ‘unit’ is not defined. How can I avoid this? Answer
Tag: class
a simple way to produces classes with global state
Suppose I have a class, defined, for example, thus: Now, I want to create a class which is identical to testclass except I don’t want testclass’ state cl, but rather its own individual state. Experiment shows that inheriting from testclass inherits cl, so that does not work. Any words of wisdom appreciated. Does this require the whole metaclass machinery? (which
Accept only objects in a method and return new object
I want to create a method that only takes objects of the class it is is defined in, manipulates it and returns a new object of the same class. For example: Does anyone have an idea how to get this done? best regards, David Answer You can do something like this : You can add type checking directly in the
Why does a function in a class does not return anything?
For exercising reasons, I am trying to implement a class SSM which stands for Static Sorted Map in python in order to implement the methods min_value(self) : find the minimum value max_value(self) : find the maximum value search(self, key): to find an element in the list The list is assumed to be sorted. Here is the code for the class:
TypeError: __init__() missing 2 required positional arguments: ‘arr’ and ‘n’
This is a problem of the missing number in python. I am getting this error. can anybody solve it? Answer you need put the input outside class,and assign it when you create instance by Obj = Missing(arr,n) code: result:
Wrong Implementation of LinkedList
I am having trouble with the following code segment. I can’t really figure out why it doesn’t work, any help is appreciated. It’s a very very simple mistake that I do not understand: Prints 5 and it keeps printing 5 if you write u.next.next.next.val, what I want is u.val = 5 , u.next.val = 1 and u.next.next = None Answer
Defining functions dynamically does not work inside class objects?
In my current project, I am constructing functions dynamically by assembling a string, executing this string, then appending the resulting functions to a list. This works well inside a console, even when looped, but strangely does not work when I attempt to do the same thing inside a class object. Do you know why, and how I could get this
Two values are same and different after defining a=b=class_name(value1) b=class_name(value2) in python
In the following code, I understand that the print of tree(named in the code) and parent(named in the code) should not be the same. But I do not understand, why the tree is always updating according to the updating of parent? (This question continues the last question here) Code: Output: In the code, it is obvious that the parent is
unbind method from instance and bind to other instance
I have read this. is it possible to change: a1.show to a2.show, I mean, change the orientation of the method to point to different instance. I want to see 2 in console. I mean, for a normal method in class, change its instance, from a1 to a2? You may wonder why I do this, I have got a decorator to
How is the initialization of objects considered in this code?
In this class there is no attribute called “a” then how x.a is considered ? Similarly what is “x.a.b”, “x.a.b.c”, “x.a.b.c.d”, “x.a.b.c.d.e” and how are they considered ?Is b is an attribute of x.a in the case of “x.a.b” and c is a attribute of x.a.b in the case of “x.a.b.c” ? Explain breifly !!! I am totally confused 😵