Pygame：使用精灵时出错

Question

嘿，我正在用pygame做一个小游戏项目，但每次我运行代码时，使用我的精灵（sprite）时就会出错：

class Sprite:
    def _init_(self, xposition, yposition, name):
        self.x = xposition
        self.y = yposition
        self.bitmap = image.load(name)
        self.bitmap.set_colorkey ((0,0,0))
    def set_position(self, xposition, yposition):
        self.x = xposition
        self.y = yposition
    def render(self):
        screen.blit(self.bitmap, (self.x, self.y))

这是我调用它的方式

hero = Sprite(20,400, 'spaceship.bmp')
herobullet = Sprite(0,480, 'bulete.bmp')
enemiebullet = Sprite(0,480, 'bulete.bmp')

更新

这是在命令行中出现的错误信息

C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\Extensions\Microsoft\Python Tools for Visual Studio\2.0\visualstudio_py_debugger.py:720: UnicodeWarning: Unicode相等比较失败，无法将两个参数转换为Unicode - 解释为不相等 if filename == frame.f_code.co_filename or (not bound and breakpoint_path_match(filename, frame.f_code.co_filename)): C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\Extensions\Microsoft\Python Tools for Visual Studio\2.0\visualstudio_py_util.py:265: RuntimeWarning: 使用surfarray时找不到模块numpy或Numeric (ImportError: 找不到模块numpy或Numeric) obj_repr = repr(obj) C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\Extensions\Microsoft\Python Tools for Visual Studio\2.0\visualstudio_py_util.py:265: RuntimeWarning: 使用sndarray时找不到模块numpy或Numeric (ImportError: 找不到模块numpy或Numeric) obj_repr = repr(obj) 程序'[6344] python.exe'已退出，代码为-1073741510 (0xc000013a)。

这是完整的代码

from pygame import *
import random
from Space_invader import *

#create the sprite for both enemy and hero
class Sprite:
    def _init_(self, xposition, yposition, name):
        self.x = xposition
        self.y = yposition
        self.bitmap = image.load(name)
        self.bitmap.set_colorkey ((0,0,0))
    def set_position(self, xposition, yposition):
        self.x = xposition
        self.y = yposition
    def render(self):
        screen.blit(self.bitmap, (self.x, self.y))

# colision detection betwee two 32*32 sprite
def Intersect(o1_x, o1_y, o2_x, o2_y):
    if (o1_x > o2_x - 32) and (o1_x < o2_x + 32) and (o1_y > o2_y - 32) and (o1_y < o2_y + 32):
                return 1
    else:
                return 0 

#initialise pygame 
init()
screen = display.set_mode((640,480))
key.set_repeat(1,1)     #make sure you can press the same key more then one and that there is a delay between each action
display.set_caption('UON Invader') #set windows name
background = image.load('background.png') #load background picture
hero = Sprite(20,400, 'spaceship.bmp')
herobullet = Sprite(0,480, 'bulete.bmp')
enemiebullet = Sprite(0,480, 'bulete.bmp')

unicode pygame importerror game development sprite surfarray sndarray runtimewarning

Pygame：使用精灵时出错

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