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What is OOP about?

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I learned about the principles of encapsulation, abstraction, inheritance and polymorphism, and now I can ...

FileNotFoundError: [WinError 3] The system cannot find the path specified

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I’m trying to rename a file with os.rename() in Python and I get this: FileNotFoundError: [WinError 3] The...

Threading, asyncio, multiprocessing

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What is the difference between threading, asyncio and multiprocessing libraries? I heard about all of them...

Zbar doesn't work

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Hello! I’m trying to use ZBar with Python (I’m using pyzbar module for Python 3) to find barcodes and it d...

Private class methods in Python

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I used to work with Java and there were private methods. Is there something like this in Python?

how to build a project management system

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On Python, can someone help me with tips on how to build a system that takes the task of project assignmen...

What is the lambda function for?

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Hi everyone. I recently learned in Python classes at a university what a lambda function is. But I don’t r...

Exec() function in Python

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Why shouldn't I use the exec() function? I heard from fellow students that this is a very bad practice, bu...

How to download CSV file with results of computer vision model prediction from Python web app?

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My computer vision model is deployed in the Django web application. It takes images as input and produces ...

C++ and Python for data science

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I can see that some part of data science job positions requires knowledge of C++ as a programming language...

Why the need to use virtual environments?

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In articles, people often describe how to set up a virtual environment for the project but without much ex...

URL parameters in Django get_queryset() function

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I am developing a Django application. For one of my class-based views, I want to use "generic.ListView" as...

Unusual operator in Python code

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What is the := operator? I know about = operator (assignment). Also, I know that there are += and -= synta...

Problem with multiprocessing library in Python

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I need to speed up the execution of my code. After I had written the synchronized version of my code, I ha...

Star and slash in Python's functions definitions

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Recently, I start to see stars and slashes in Python's function definitions. They are like regular functio...

Changing the field in the Django form after submit

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Hi! I want to change the value of the form field in Django after the user submits the form. But when I try...

OOP in Django

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How can I use object-oriented programming in order to better structure my code in Django? I am interested ...

What does "f" character in front of the string mean?

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I noticed that sometimes strings in python have an "f" symbol in front of them. Also, they have some value...

Non-stationary time series

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My current task is to create a machine learning model for time-series forecasting. I have heard that it is...

Double underscore vs single underscore before Python method

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What is the meaning of double leading underscore (_) and single leading underscore () before the Python me...

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