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#!/usr/bin/env python

import os,sys
from Tkinter import *
from glob import glob
from ImageTk import PhotoImage

imgdir = '/home/beibei/media/photo/'
def show_photos(imgdir):
    win.title('show photos')
    photos = map(lambda x: (x,PhotoImage(file=x)),glob(imgdir+'*.jpg'))

    savephotos = []
    for (name,item) in photos:
        Label(win,image=item).pack(side=LEFT)
        savephotos.append(item)
    return savephotos


if __name__ == '__main__':
    win = Tk()
    photo = show_photos(imgdir)
    win.mainloop()


µ«ÊÇÓÐÒ»µã²»Ã÷°×£ºsavephotos = []   savephotos.append(item)  return savephotos
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On 5/2/07, xiaoyi tian <purpen.w在gmail.com> wrote:
> 我想把一个文件夹里的图片，都显示出来，源代码如下：
>
> #!/usr/bin/env python
>
> import os,sys
> from Tkinter import *
> from glob import glob
> from ImageTk import PhotoImage
>
> imgdir = '/home/beibei/media/photo/'
> def show_photos(imgdir):
>     win.title('show photos')
>     photos = map(lambda x:
> (x,PhotoImage(file=x)),glob(imgdir+'*.jpg'))
>
>     savephotos = []
>     for (name,item) in photos:
>         Label(win,image=item).pack(side=LEFT)
>         savephotos.append(item)
>     return savephotos
>
>
> if __name__ == '__main__':
>     win = Tk()
>     photo = show_photos(imgdir)
>     win.mainloop()
>
>
> 但是有一点不明白：savephotos = []   savephotos.append(item)  return savephotos
> 这三句，在此有什么意义？返回的数据又没有在下文直接调用？但是，如果删去，又不能正常显示图片？有点迷惑，谁能指点一下？多谢？

我想是因为作用域的原因，如果不保存，在执行完show_photos之后图片就会自动释放，所以图片无法显示。这样做是为了不让图片释放。

-- 
I like python!
UliPad <>: http://wiki.woodpecker.org.cn/moin/UliPad
My Blog: http://www.donews.net/limodou

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ÔÚ07-5-2£¬limodou <limodou在gmail.com> дµÀ£º
>
> On 5/2/07, xiaoyi tian <purpen.w在gmail.com> wrote:
> > ÎÒÏë°ÑÒ»¸öÎļþ¼ÐÀïµÄͼƬ£¬¶¼ÏÔʾ³öÀ´£¬Ô´´úÂëÈçÏ£º
> >
> > #!/usr/bin/env python
> >
> > import os,sys
> > from Tkinter import *
> > from glob import glob
> > from ImageTk import PhotoImage
> >
> > imgdir = '/home/beibei/media/photo/'
> > def show_photos(imgdir):
> >     win.title('show photos')
> >     photos = map(lambda x:
> > (x,PhotoImage(file=x)),glob(imgdir+'*.jpg'))
> >
> >     savephotos = []
> >     for (name,item) in photos:
> >         Label(win,image=item).pack(side=LEFT)
> >         savephotos.append(item)
> >     return savephotos
> >
> >
> > if __name__ == '__main__':
> >     win = Tk()
> >     photo = show_photos(imgdir)
> >     win.mainloop()
> >
> >
> > µ«ÊÇÓÐÒ»µã²»Ã÷°×£ºsavephotos = []   savephotos.append(item)  return savephotos
> > ÕâÈý¾ä£¬ÔÚ´ËÓÐʲôÒâÒ壿·µ»ØµÄÊý¾ÝÓÖûÓÐÔÚÏÂÎÄÖ±½Óµ÷Ó㿵«ÊÇ£¬Èç¹ûɾȥ£¬ÓÖ²»ÄÜÕý³£ÏÔʾͼƬ£¿ÓеãÃÔ»ó£¬Ë­ÄÜÖ¸µãһϣ¿¶àл£¿
>
> ÎÒÏëÊÇÒòΪ×÷ÓÃÓòµÄÔ­Òò£¬Èç¹û²»±£´æ£¬ÔÚÖ´ÐÐÍêshow_photosÖ®ºóͼƬ¾Í»á×Ô¶¯ÊÍ·Å£¬ËùÒÔͼƬÎÞ·¨ÏÔʾ¡£ÕâÑù×öÊÇΪÁ˲»ÈÃͼƬÊÍ·Å¡£
>
> --
> I like python!
> UliPad <>: http://wiki.woodpecker.org.cn/moin/UliPad
> My Blog: http://www.donews.net/limodou
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