Python and Visual Studio Code: Pylance(reportUndefinedVariable)

Question

I have the following Code:

import random

FONT_COLOUR = (255, 255, 255)
WIDTH = 800
HEIGHT = 600
CENTRE_X = WIDTH/2
CENTRE_Y = HEIGHT/2
CENTRE = (CENTRE_X, CENTRE_Y)
FINAL_LEVEL = 6
START_SPEED = 10
COLOURS = ["green", "blue"]

game_over = False
game_complete = False
current_level = 1
stars = []
animations = []

def draw():
    global stars, current_level, game_over, game_complete
    screen.clear()
    screen.blit("space", (0, 0))
    if game_over:
        display_message("GAME OVER!", "Versuche es erneut.")
    elif game_complete:
        display_message("DU HAST GEWONNEN!", "Gut gemacht.")
    else:
        for star in stars:
            star.draw()

def update():
    global stars
    if len(stars) == 0:
        stars = make_stars(current_level)

def make_stars(number_of_extra_stars):
    colours_to_create = get_colours_to_create(number_of_extra_stars)
    new_stars = create_stars(colours_to_create)
    layout_stars(new_stars)
    animate_stars(new_stars)
    return new_stars

def get_colours_to_create(number_of_extra_stars):
    colours_to_create = ["red"]
    for i in range(0, number_of_extra_stars):
        random_colour = random.choice(COLOURS)
        colours_to_create.append(random_colour)
    return colours_to_create


def create_stars(colours_to_create):
    new_stars = []
    for colour in colours_to_create:
        star = Actor(colour + "-star")
        new_stars.append(star)
        return new_stars

def layout_stars(stars_to_layout):
    number_of_gaps = len(stars_to_layout) + 1
    gap_size = WIDTH/number_of_gaps
    random.shuffle(stars_to_layout)
    for index, star in enumerate(stars_to_layout):
        new_x_pos = (index + 1) * gap_size
        star.x = new_x_pos

def animate_stars(stars_to_animate):
    for star in stars_to_animate:
        duration = START_SPEED - current_level
        star.anchor = ("center", "bottom")
        animation = animate(star, duration=duration, on_finished=handle_game_over, y=HEIGHT)
        animations.append(animation)

def handle_game_over():
    global game_over
    game_over = True

def on_mouse_down(pos):
    global stars, current_level
    for star in stars:
        if star.collidepoint(pos):
            if "red" in star.image:
                red_star_click()
            else:
                handle_game_over()
                
def red_star_click():
    global current_level, stars, animations, game_complete
    stop_animations(animations)
    if current_level == FINAL_LEVEL:
        game_complete = True
    else:
        current_level = current_level + 1
        stars = []
        animations = []
        
def stop_animations(animations_to_stop):
    for animation in animations_to_stop:
        if animation.running:
            animation.stop()
            
def display_message(heading_text, sub_heading_text):
    screen.draw.text(heading_text, fontsize=60, center=CENTRE, color=FONT_COLOUR)
    screen.draw.text(sub_heading_text,
                     fontsize=30,
                     center=(CENTRE_X, CENTRE_Y + 30),
                     color=FONT_COLOUR)

... and Visual Studio Code is presenting me the following problems:

• "screen" is not defined - Pylance(reportUndefinedVariable) [24,5]
• "screen" is not defined - Pylance(reportUndefinedVariable) [25,5]
• "Actor" is not defined - Pylance(reportUndefinedVariable) [57,16]
• "animate" is not defined - Pylance(reportUndefinedVariable) [73,21]
• "screen" is not defined - Pylance(reportUndefinedVariable) [105,5]
• "screen" is not defined - Pylance(reportUndefinedVariable) [106,5]

What can I do?

Answer 1

Hello sorry for everything and thanks for your answers. Fact is that only Visual Studio Code is showing these problems but the programm is working. I think there is a bibliothek not installed. But which one is not installed I need to know...