图像加载器中出现意外的缩进错误

Question

我正在尝试构建图像loader.i使用exec函数生成随机图像变量。但解释器说意外的缩进请帮助我。

我使用exec函数为画布生成随机图像。

Traceback (most recent call last):
File "C:\Users\Desktop\gggg.py", line 74, in <module>
MainFrame()
File "C:\Users\Desktop\gggg.py", line 10, in __init__
self.loadImages()
File "C:\Users\Desktop\gggg.py", line 66, in loadImages
for k,v in c.iteritems():exec("%s = %s" % (k,v))
File "<string>", line 1
self.__image0 = PhotoImage( file = 'CRD.gif' )
^
IndentationError: unexpected indent


from Tkinter import *
root = Tk(); root.geometry( "320x240" )
c = Canvas( root, width = 320, height = 240, bg = "white" ); c.pack()


class MainFrame:
"""Class to move an image on a Canvas screen ( Python 2.5 )"""
    def __init__( self):

        self.loadImages()

        #self.__image0 = PhotoImage( file = "CRD.gif" )
        #self.__image1 =  PhotoImage( file = "CRD.gif" )
        #self.__image2 = PhotoImage( file = "CRD.gif" )



         self.__picture0 = c.create_image( 100,100,image =  self.__image0 )

   #     self.__picture1 = c.create_image( 300, 100,image =  self.__image1 )

    #    self.__picture2 = c.create_image( 500, 100,image =  self.__image2 )




         self.__move = False
         c.bind( "<Button-1>", self.startMovement )
         c.bind( "<ButtonRelease-1>", self.stopMovement )
         c.bind( "<Motion>", self.movement )
         c.addtag_all(7)

   def startMovement( self, event ):
       self.__move = True
       self.initi_x = c.canvasx(event.x) #Translate mouse x screen coordinate to canvas coordinate
       self.initi_y = c.canvasy(event.y) #Translate mouse y screen coordinate to canvas coordinate
       print('startMovement init', self.initi_x, self.initi_y)


    ID of where mouse pointer is   c.addtag_withtag(1,3)

      print(self.movingimage)
      print(c.find_all()) # get all canvas objects ID 

   def stopMovement( self, event ):
       self.__move = False

   def movement( self, event ):
       if self.__move:
          end_x = c.canvasx(event.x) #Translate mouse x screen coordinate to canvas coordinate
          end_y = c.canvasy(event.y) #Translate mouse y screen coordinate to canvas coordinate
          print('movement end', end_x, end_y)
          deltax = end_x - self.initi_x #Find the difference
          deltay = end_y - self.initi_y
          print('movement delta', deltax, deltay)
          self.initi_x = end_x #Update previous current with new location
          self.initi_y = end_y
          print('movement init', self.initi_x, self.initi_y)
          c.move(1,deltax,deltay) # move object
          c.move(2,deltax,deltay) # move object
          c.move(3,deltax,deltay) # move object


    def loadImages(self):
         c = {" self.__image0": "PhotoImage( file = 'CRD.gif' )", 
          "self.__image1": "PhotoImage( file = 'CRD.gif' )","self.__image2": 
          "PhotoImage( file = 'CRD.gif' )"}
         for k,v in c.iteritems():exec("%s = %s" % (k,v))



if __name__ == "__main__":


MainFrame()
mainloop()