filedialog, python, save as

Question

i create a very simple photo editor. I've alredy create open-file and save-file button, and command to open file:

def Open(self):
        #Open Callback
        ftypes = [('Image Files', '*.tif *.jpg *.png')]
        dlg = filedialog.Open(self, filetypes = ftypes)
        filename = dlg.show()
        self.fn = filename
        self.setImage()

Now I want to create save command and I'm stuck:

 def save(self):
        myFormats = [('Windows Bitmap','*.bmp'),\
                     ('Portable Network Graphics','*.png'),\
                     ('JPEG / JFIF','*.jpg'),('CompuServer GIF','*.gif'),]
        filename = filedialog.asksaveasfilename()

How to use this formats as formats my saving image?

Answer 1

To include those formats use filetypes option:

filename = filedialog.asksaveasfilename(filetypes=myFormats)

if filename:
    #do save

For example if I open an image like this:

import Image
image = Image.open(filename)

To save I have just to do:

image.save(filename)