Why is the PyGame animation is flickering

The problem is caused by multiple calls to pygame.display.update(). An update of the display at the end of the application loop is sufficient. Multiple calls to pygame.display.update() or pygame.display.flip() cause flickering. Remove all calls to pygame.display.update() from your code, but call it once at the end of the application loop: while running: screen.fill((225, 0, 0)) … Read more

tkinter: how to use after method

You need to give a function to be called after the time delay as the second argument to after: after(delay_ms, callback=None, *args) Registers an alarm callback that is called after a given time. So what you really want to do is this: tiles_letter = [‘a’, ‘b’, ‘c’, ‘d’, ‘e’] def add_letter(): rand = random.choice(tiles_letter) tile_frame … Read more

How do I type hint a method with the type of the enclosing class?

TL;DR: As of today (2019), in Python 3.7+ you must turn this feature on using a “future” statement, from __future__ import annotations. (The behaviour enabled by from __future__ import annotations might become the default in future versions of Python, and was going to be made the default in Python 3.10. However, the change in 3.10 … Read more