furas.pl / blog.furas.pl

blog.furas.pl · python/pillow

Pillow: Jak wstawić transparentny animowany gif na inny obraz?

To jest przykład jak pobrać animowany GIF i wstawić go na innym obrazku. Kod używa ImageSequence do pobrania animacji klatka-po-klatce i wstawia je na powielane tło. Ponieważ GIF m...

14.12.2020 blog.furas.pl

blog.furas.pl · uikit

Problem with button in Google Search with framework UIKIT

After adding Google Search its button was incorrect Problem makes standard setting in framework UIKIT svg { max-width: 100%; } It helps to add this CSS rule .gsc-search-button.gsc-...

11.12.2020 blog.furas.pl

blog.furas.pl · uikit

Problem z przyciskiem w Google Search pod UIKIT

Po wstawieniu na stronę wyszukiwarki Google jej przycisk był niepoprawny Powodem tego było standardowe ustawienie w frameworku UIKIT svg { max-width: 100%; } Pomogło dodanie tej re...

11.12.2020 blog.furas.pl

blog.furas.pl · python

Python: How in pynput runs function only once when you click many times and function is already running?

If you will use Listener to run long-running code directly in current thread then it will block listener and listener will not execute other code. Listener will also not get mouse...

11.12.2020 blog.furas.pl

blog.furas.pl · python

Python: Jak w pynput uruchamiać funkcję tylko raz pomimo wielokrotnego klikania myszą gdy funcja już jest uruchomiona?

Jeśli będzie używał Listener do uruchamia w głównym wątku długo trwającego kodu wtedy będzie on blokował listener i nie będzie on mógł wykonywac innego kodu. Listener nie będzie mó...

11.12.2020 blog.furas.pl

blog.furas.pl · python

Python: How to merge and update dictionary without changing old dictionary? New method in Python 3.9.

In Python 3.9 there is new method to create new dictionary with updated values and keep old dictionary without updates - using operator | new_dict = old_dict | dict_with_updates Wi...

09.12.2020 blog.furas.pl

blog.furas.pl · python

Python: How to read incorrect/dirty JSON data?

If you have incorrect (dirty) JSON data then you can try to use module dirtyjson For example it can read - dictionary keys without " " (but not dictionary values), - dictionary key...

09.12.2020 blog.furas.pl

blog.furas.pl · python

Python: How to use module struct-to-convert-(un)signed-byte-to-integer-value

In languages like C/C++ when you use signed byte then value \xff means -1 (and byte can have values -128...127) and when you use unsigned byte then value \xff means 255 (and byte c...

09.12.2020 blog.furas.pl

blog.furas.pl · python

Python: Jak wczytać niepoprawne dane JSON?

Jeśli masz niepoprawne dane JSON wtedy możesz spróbować użyć modułu dirtyjson Dla przykładu wczytuje on - klucze słownkia bez " " (ale nie wartości słownika bez " "), - klucze/wart...

09.12.2020 blog.furas.pl

blog.furas.pl · python/tkinter

Tkinter: How to change state to disable/enable Button or other widget

You can deactivate button with button.config(state="disabled") and activate it back with button.config(state="normal") eventually button.config(state="active") The same way you can...

09.12.2020 blog.furas.pl

blog.furas.pl · python/tkinter

Tkinter: Why Label doesn't display image? Bug with Garbage Collector in PhotoImage.

Sometimes image can disappear when you move code into function. It is common problem with bug in PhotoImage with garbage collector which removes image from memory when image is ass...

09.12.2020 blog.furas.pl

Brak podglądu

blog.furas.pl

Python: How to use "struct" to convert (un)signed byte to integer value.

In languages like C, C++ when you use unsigned or signed variables and then byte \xff means 255 (as unsigned ) or -1 (as signed ) \n Unsigned byte may have values 0..255 and signed...

09.12.2020 blog.furas.pl

blog.furas.pl · python

How to run pynput Listener simultaneously with other Python module

pynput documentation shows examples how to monitoring the keyboard and how to monitoring the mouse For keyboard it looks similar for this from pynput import keyboard # --- function...

07.12.2020 blog.furas.pl

blog.furas.pl · python

How to get keycode in Python using Tkinter or PyGame

Tkitner This code uses tkinter to get pressed/released key and display its keycode (scancode), keysym, char (unicode) import tkinter as tk # --- functions --- def on_press(event):...

06.12.2020 blog.furas.pl

blog.furas.pl · python/tkinter

Tkinter: How to use Radiobutton and grid() to create clickable calendar.

This simple example shows how to use Radiobutton and grid (and datetime) to create calendar for one month. It also shows how to use command= in Radiobutton to execute function whic...

10.04.2020 blog.furas.pl

blog.furas.pl · python

Python: Pobieranie po trzy elementy z jednej listy za pomocą `zip()`

Pobieranie po trzy elementy z jednej listy Python 3 wymaga użycia list() w pewnych momentach. Za pomocą listy - nie dziala a = [1,2,3,4,5,6,7,8,9] print('A:', list(zip(a, a, a)) )...

09.03.2020 blog.furas.pl

blog.furas.pl · python scraping

Scraping: How to use regular expression in BeautifulSoup to scrape Nobel Laureats from table in Wikipedia

I wanted to try to use regex to get links to laureats in table on page List of Nobel Memorial Prize laureates in Economics First I tried to use r'^/wiki/[A-Z][a-z]*_[A-Z][a-z]*$')...

09.03.2020 blog.furas.pl

blog.furas.pl · python scraping

Scraping: Jak użyć wyrażenia regularnego w BeautifulSoup aby pobrać Laureatów Nobla z tabeli w Wikipedii

Chciałem użyć wyrażenia regularnego do pobrania linków do laureatów w tabeli na stronie List of Nobel Memorial Prize laureates in Economics Najpierw próbowałem użyć r'^/wiki/[A-Z][...

09.03.2020 blog.furas.pl

blog.furas.pl · python

Python: Taking 3 elements from one list using `zip()`

Taking 3 elements from one list BTW: Python 3 needs soetime to use list(). Using list - doesn't work a = [1,2,3,4,5,6,7,8,9] print('A:', list(zip(a, a, a)) ) Using three iter() (it...

09.03.2020 blog.furas.pl

blog.furas.pl · python/tkinter

Tkinter: How to load, display and replace image on Label, Button or Canvas

Example images At start few images which I will use in examples. You can download them to use in own examples. Reading image Tkinter uses PhotoImage to read PNG, GIF, PGM/PPM. Olde...

09.03.2020 blog.furas.pl