python - Chasing game - Error message: "'module' object has no attribute 'display'" -

i new programming , trying set simulation in 1 circle moving in random pattern , being chased second circle. hoping add 5 circles distractors moving around randomly.

in code called circle moving randomly "mouse" , circle chasing "cat".

i researched online , looked @ other people's code ideas , came far:

from pygame import * import random import sys, pygame, math, random pygame.locals import *  pygame.init() background_colour = (255,255,255) (width, height) = (1024, 768) screen = pygame.display.set_mode((width, height),pygame.fullscreen)   class mouse(pygame.sprite.sprite):     def __init__(self, (x, y), size):         pygame.sprite.sprite.__init__(self)         self.x = mx         self.y =         self.size = 30         self.colour = (0, 0, 0)         self.thickness = 2         self.speed = 2         self.angle = random.uniform(0, math.pi*2)       def display(self):         pygame.draw.circle(screen, self.colour, (int(mx), int(my)), self.size, self.thickness)      def move(self):         self.x += math.sin(self.angle) * self.speed         self.y -= math.cos(self.angle) * self.speed   class cat(pygame.sprite.sprite):     def __init__(self, (x, y), size):         pygame.sprite.sprite.__init__(self)         self.x = cx         self.y = cy         self.size = 30         self.colour = (0, 0, 0)         self.thickness = 2         self.speed = 2         self.angle = random.uniform(0, math.pi*2)         pixchangec = 2      def display(self):         pygame.draw.circle(screen, self.colour, (int(cx), int(cy)), self.size, self.thickness)      def move(self):         if mx >= cx:             cx += pixchangec             else:             cx -= pixchangec         if >= cy:             cy += pixchangec         else:             cy -= pixchangec  def main():      pygame.display.set_caption('chase')     mouse = mouse()     cat = cat()   running = true while running:     event in pygame.event.get():         if event.type == pygame.quit or (event.type == keyup , event.key == k_escape):             pygame.quit()             sys.exit()       screen.fill(background_colour)      mouse.display()     mouse.move()     cat.display()     cat.move()      pygame.display.flip()  

unfortunately, when try run code this, following error message:

" file "c:...", line 75, in mouse.display() attributeerror: 'module' object has no attribute 'display'"

i not find answer online going wrong if has advice/ideas, appreciate help!

pydude on right track stopped way soon. you're getting un-helpful error message because pygame.mouse (with small m) imported when use from blank import * method of importing pygame, should overwrite 1 have mouse = mouse(). problem indentation wrong. running = true down needs indented once more, including line. then, main() function run, need include @ end of file:

if __name__ == "__main__":     main() 

so happening when run code have skips right on main() method (which never called in code) , runs stuff after indentation goes back, starting running = true. when gets mouse.display() you haven't run line mouse = mouse() yet uses mouse imported pygame. mouse doesn't have display() method, hence error message.

you'll have more errors in code after fixing that, change past 1 error. next 1 has more helpful error message @ least, should able figure out.

also, advice: from blank import * discouraged reason. it's better either import pygame , refer as, eg, pygame.sprite (which you're doing well...which odd you're doing both...) or from pygame import sprite, foo, bar, ... , explicitly list each specific thing want out of module. these 2 methods prevent having unknown stuff cluttering namespace, , have prevented getting confusing error message couldn't figure out.