Python Forum: Questions and Answers

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question@mail.ru · 0000-00-00 00:00:00 · python, вопрос, новичок

Explain the code if __name__ == "__main__" in terms of the Java language

"I'm new to Python and trying to understand everything through the language I know - Java. When I came across if __name__ == "__main__", I got stuck. I read answers on this topic, ...

question@mail.ru · 0000-00-00 00:00:00 · проект

Debugging Python code

I have a project written in Python. I am developing it on the Ubuntu platform, in a text editor. What tools should I use to get step-by-step debugging capabilities?

question@mail.ru · 0000-00-00 00:00:00 · помощь, пример, ии

Infinity symbol recognition

How can I recognize the infinity symbol (specifically it) in a photo or video? I would appreciate it if you could provide code in your answer. UPD: Explain how, for example, using ...

question@mail.ru · 0000-00-00 00:00:00 · словарь, строка, python

Get key by value

"There is a dictionary:d = {'a': '1', 'b': '2', 'c': '3'}and there is a string:stroka = 'a3a2c'If an element of the string is among the values of the dictionary, it is necessary to...

question@mail.ru · 0000-00-00 00:00:00 · python

Finding a rectangle in an image

Task: Find a hard drive in a photo, determine its angle and contours Problem: It is not always possible to find the correct contour of the disk. In the code, I make the images gray...

question@mail.ru · 0000-00-00 00:00:00 · python

How to check if a file exists?

How to check if a file exists at a specific path using Python?

on5fydu8@gmail.com · 0000-00-00 00:00:00 · python

How to output a Unicode string to Windows console from Python?

Simple print() doesn't work. The interpreter crashes with a complaint that it cannot convert Unicode to the encoding used in the Windows console. Maybe there is a way to help it? P...

on5fydu8@gmail.com · 0000-00-00 00:00:00 · кортеж, python, пример

Why can't you just add two dictionaries?

 Why can you add lists, tuples, sets, but not dictionaries?If you don't like +, you could have made a fluent interface - so that dict.update() returns self.The best I've found...

on5fydu8@gmail.com · 0000-00-00 00:00:00 · python, ии

Why doesn't the Python script understand Unicode?

"Script:#! /usr/bin/env python print ""Привет"" Gives an error:File ""./y.sh"", line 2 SyntaxError: Non-ASCII character '\\xd0' in file ./y.sh on line 2, but no encoding declar...

on5fydu8@gmail.com · 0000-00-00 00:00:00 · python, пример, ии, книга, работа

What is an object in Python. Why id(a) == id(b) == id(1)?

"I will elaborate on the question.In Python books, it is written that everything in Python is an object.Let's take the traditional approach to learning/teaching programming languag...

on5fydu8@gmail.com · 0000-00-00 00:00:00 · вопрос, pip

Why you shouldn't use sudo pip?

Why shouldn't you use sudo pip? I don't fully understand this aspect. I was suggested to ask a separate question. It might also be useful for many other people to know.

on5fydu8@gmail.com · 0000-00-00 00:00:00 · python, пример

Variable comparison with multiple values using or works incorrectly

"I have a problem with the if statement and its or function. When working with str it looks something like thisif a==""zero"" or ""null"": print(0)elif a==""one"" or ""single"":...

on5fydu8@gmail.com · 0000-00-00 00:00:00 · python, ии

Current directory in Python

How to get the path to the current directory with the script in a Python program. I know that the os library is required for this, but there are so many different classes and funct...

on5fydu8@gmail.com · 0000-00-00 00:00:00 · боты

Is it safe to run a Telegram Bot on a computer?

Hello, is it safe to run a Telegram bot on my main computer? The virtual machine keeps disconnecting due to VPN. Thanks, RKN.I mean, what if I missed escaping something somewhere, ...

on5fydu8@gmail.com · 0000-00-00 00:00:00 · python, пример

How to implement confirmation of writing or reading in a folder?

Hello! How can I monitor a folder in Python code?For example: I monitor /home/igor/Desktop, and when any program tries to do something with a folder/file inside it, I receive a pro...

on5fydu8@gmail.com · 0000-00-00 00:00:00 · python, вопрос, пример, ии

Is the idea of a new game engine in Python viable?

"Hello everyone! I'd like to get your opinion on the viability of my idea. Below is a brief description of the overall picture.I've been programming in Python for 3 years, I'm 16 (...

on5fydu8@gmail.com · 0000-00-00 00:00:00 · python, ии

Which library is best to use for a discord bot in python?

I'm planning a large bot for discord.I googled libraries and many write that discord.py has ceased its activity.I also found nextcord and disnake, and supposedly disnake is head an...

on5fydu8@gmail.com · 0000-00-00 00:00:00 · break_continue, работа

Why does a script launched from Visual Studio Code freeze?

I launch a script for debugging from VSC.It has a large loop that runs for many hours. Sometimes the task completes fully, sometimes it stops at an arbitrary location without error...

on5fydu8@gmail.com · 0000-00-00 00:00:00 · python, python2, python3

Why is inline keyboard not displayed when editing a message?

"I have Python code for sending messages and then editing them. But when changing the text and buttons in an existing message, the text changes but the buttons disappear.At the sam...

on5fydu8@gmail.com · 0000-00-00 00:00:00 · debug, работа, проект

I run a script for debugging from VSC.

It has a large loop that runs for many hours. Sometimes the task completes fully, sometimes it stops at an arbitrary place without errors. All exceptions are caught and passed thro...

danmodenov@mail.ru · 0000-00-00 00:00:00 · lambda, метод, asyncio

Super argument parser

Write a script that accepts any number of parameters separated by an arbitrary number of spaces as arguments and outputs them in the same sequence to the screen, each on a separate...

danmodenov@mail.ru · 0000-00-00 00:00:00 · обсуждение, совет, python3, новичок

Sleep and while True in tkinter

nFor example, there is code:ndef tk_sleep():n status_send = Tk()n status_send.geometry('400x340')n tx_1 = Text(status_send, font=('times', 12), width=62, height=15, wrap=W...

danmodenov@mail.ru · 0000-00-00 00:00:00 · python, вопрос, помощь

Python for dummies, where to get materials?

Good afternoon! I'm a beginner in Python, recommend good internet resources, books, video tutorials (if any, but unlikely) dedicated to Python and web development in Python, Django...

danmodenov@mail.ru · 0000-00-00 00:00:00 · декоратор, метод, многопроцессорность, парсинг

What does if __name__ == "__main__" do?

nWhat happens during the call if __name__ == "__main__":?n# Threading examplenimport time, threadnndef myfunction(string, sleeptime, lock, *args):n while 1:n lock.ac...

danmodenov@mail.ru · 0000-00-00 00:00:00 · python, вопрос, помощь, проект

Is there a switch case operator in Python?

I've encountered a need to implement multiple conditions, which in other languages I would implement using a switch-case construct. In Python, I have to write everything using if-...