I am reading thru some pygame examples and learning python, I thought I was doing well until I came upon this line of code in aliens.py example:
class Alien(pg.sprite.Sprite):
"""An alien space ship. That slowly moves down the screen."""
speed = 13
animcycle = 12
images: List[pg.Surface] = []
I don't understand the use of a colon (:) as in,
imgaes:
And even what comes after colon,
List[pg.Surface]
is puzzling too, any hints or links to read up on would be greatly appreciated!
