filedialog, tkinter and opening files
I’m working for the first time on coding a Browse button for a program in Python3. I’ve been searching the internet and this site, and even python standard library.
Python
Regex for existence of some words whose order doesn’t matter
I would like to write a regex for searching for the existence of some words, but their order of appearance doesn’t matter.
How to get exception message in Python properly
What is the best way to get exceptions’ messages from components of standard library in Python?
What is the best way to copy a list?
What is the best way to copy a list? I know the following ways, which one is better? Or is there another way? lst = ['one', 2, 3] lst1 = list(lst) lst2 = lst[:] import copy lst3 = copy.copy(lst) Answers: Thank you for visiting the Q&A section on Magenaut. Please note that all the answers … Read more
Custom loss function in Keras
I’m working on a image class-incremental classifier approach using a CNN as a feature extractor and a fully-connected block for classifying.
How to bind a click event to a Canvas in Tkinter?
In this example, we use the bind method of the frame widget to bind a callback function to an event called . Run this program and click in the window that appears. Each time you click, a message like “clicked at 44 63” is printed to the console window. Keyboard events are sent to the widget that currently owns the keyboard focus. You can use the focus_set method to move focus to a widget:
Using .pth files
I am trying to make a module discoverable on a system where I don’t have write access to the global site-packages directory, and without changing the environment (PYTHONPATH). I have tried to place a .pth file in the same directory as a script I’m executing, but it seems to be ignored. E.g., I created a file extras.pth with the following content:
Convert Year/Month/Day to Day of Year in Python
I’m using the datetime module, i.e.:
What is the purpose of subclassing the class “object” in Python?
All the Python built-ins are subclasses of object and I come across many user-defined classes which are too. Why? What is the purpose of the class object? It’s just an empty class, right?
What does hash do in python?
I saw an example of code that where hash function is applied to a tuple. As a result it returns a negative integer. I wonder what does this function do? Google does not help. I found a page that explains how hash is calculated but it does not explain why we need this function.