我需要在 Gui 中实现一个函数,所以你按下按钮mirror
,它会调用函数flip
,并在 Gui 中显示 img。
假设插入到mirror
/的图片flip
是B&W img。
我检查了一下flip
,它工作正常,但当我试图将它组合到Gui
.
我错过了什么?
def flip(im):
'''Flips a picutre horizontally, and returns a new image that is a mirror view of the original'''
org=Image.open(im)
new=Image.new("L",org.size)
for x in range(org.size[0]):
for y in range(org.size[1]):
pixel=org.getpixel((x,y))
new.putpixel((org.size[0]-x-1,y),pixel)
return new
def mirror():
'''Flips the image like a mirror does, left to right'''
global img
out = Image.new('L',img.size, 'white')
out=flip(img)
img = out
display()
def display():
delete()
global img
global photo
photo = ImageTk.PhotoImage(img)
canvas.create_image(250, 250, image=photo)
canvas.pack()
### GUI packing ###
g = Gui()
g.title('PhotoPy 0.2')
global img
### canvas
canvas=g.ca(500, 500, bg='white')
### menu
g.row(weights=[1,0,0,0])
filename = g.en(text='python.bmp', width=16)
g.bu(text='...', command=browse)
g.bu(text='Save', command=save)
g.bu(text='Load', command=load)
g.bu(text='Mirror', command=mirror)
g.endrow()
### start
g.mainloop()
我收到此错误消息:
Exception in Tkinter callback
Traceback (most recent call last):
File "C:\Python27\lib\lib-tk\Tkinter.py", line 1410, in __call__
return self.func(*args)
... line 87, in mirror
out=flip(img)
... line 24, in flip
org=Image.open(im)
... line 1956, in open
prefix = fp.read(16)
... in __getattr__
raise AttributeError(name)
AttributeError: read