Let’s consider the code below. On first look, one might expect list_1 and list_2 to both have the same content: [“Tom”, “Tom”], but this is not the case. list_1 evaluates to [“Tom”, “Tom”], whereas list_2 evaluates to [“John”, “John”…
Tag: oop
Main code in running but the other code doesn’t run
I am learning design pattern in python and the subject is singleton objects so, I was writing my main code as PRO003 and import it into PRO004. This is PRO003 Code: And This is PRO004 code: But This Is The Output: I think this code want self, but self is not giving and it is by class and it must
How to print an instance of a parent class in base class?
I am able to print the name of Class Student when I inherit the class into Sports and define the values in the init method. but I am not able to figure out how to print the name given when Student class is created without defining the name in Sports class, When I comment out the Student.__init__(self, 1, R…
Define a generator which updates global variables before the first __next__() call
Given the following function in python I would like to update the global variable before calling “next()”. Let me show it to you with an example. Then you can run: Which outputs the following: Finally: please note that there is a way of doing this via a class definition that has a class variable, …
In PyQT why somes widgets needs the “self” parameter before calling them, while others don’t
I’m a little bit confused about the use of the “self” parameter with some widgets like (QLineEdit), indeed when learning to use the QLabel widget, I used to call the class without the self paramater, or when using the QLineEdit widget, the widget wouldn’t work without the “self&#…
Where to find discord.py bot in self attributes in order to assign roles
I am the owner of a Discord server that doesn’t have too many people so I want them to introduce themselves so I can keep track of who’s who. Upon joining, members only have access to a #introductions channel. When they type in their name, they are given the Member role. There isn’t any disc…
How to change room in this game (arcade Python)
I am developing a simple platformer game using the arcade game library of Python. I am still new to this, but I have tried to use as much object oriented programming as I could. I have successfully setup two “rooms” or levels of the game. However, I cannot figure out how to move to the second room…
How do I implement the datetime module into my code?
So how do I make the string a date? The error: Answer When you’re creating your object you have to enclose the value inside quotes: Just 21.12.1999 by itself isn’t a valid Python definition of anything. You can then use strptime of the datetime.datetime module to parse it into a datetime, and retr…
Labels and buttons not appearing PyQt5, Python 3 [closed]
Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers. This question was caused by a typo or a problem that can no longer be reproduced. While similar questions may be on-topic here, this one was resolved in a way less likely to help future readers. Closed 2 y…
more than one constructor in a python class
I come from the Java programming language and I know that you can have more than one constructor there. My question now is: is that also possible in Python? My Problem: I have a class, where I have my help functions for my commands (implemented with click). These commands are not in the history class. Now my …