[Tkinter] Saving images

[Christina]

I imported PIL at the begining of my code: from PIL import Image, ImageTk .
I have longer code (it is only part which I use to save photo) unfortunately I wrote it in different language so I must rewrite it to english before I sent it here.

image = Image.open(filename)
photo = ImageTk.PhotoImage(image)
a = image.filename = asksaveasfilename(initialdir = "/",title = "Select file",filetypes = (('JPEG', ('*.jpg','*.jpeg','*.jpe','*.jfif')),('PNG', '*.png'),('BMP', ('*.bmp','*.jdib')),('GIF', '*.gif')))
image.save(a)

I save image (class Image not PhotoImage). Should I use PhotoImage for save? Like:

 a = photo.filename..., photo.save(a)

? But I think PhotoImage has no module to save it. Where else could there be the problem?