相当于PIL.Image tobytes（）的python gtk

Question

what is gtk equivalent of PIL.Image tobytes()?

i = PIL.Image.open('image.png')
data = i.tobytes() 

I am trying to get screen with GTK and transform it to the same bytes as in previous PIL:

import gtk, PIL.Image

img_width = gtk.gdk.screen_width()
img_height = gtk.gdk.screen_height()
data = gtk.gdk.Pixbuf(
  gtk.gdk.COLORSPACE_RGB,
  False,
  8,
  img_width,
  img_height
)  
data.get_from_drawable(
  gtk.gdk.get_default_root_window(),
  gtk.gdk.colormap_get_system(),
  0, 0, 0, 0,
  img_width,
  img_height
)
data = data.tobytes() #<-- here trying to get bytes

Answer 1

You're looking for pixbuf.get_pixels() .

Note that it's possible for the returned data to contain padding:

Rows in the image are stored top to bottom, and in each row pixels are stored from left to right. There may be padding at the end of a row. The "rowstride" value of a pixbuf, as returned by gdk_pixbuf_get_rowstride(), indicates the number of bytes between rows.

(from here .)

You can use string/bytes operations to remove this padding, or alternatively use pixbuf.save_to_callback to save the image in a raw RGB format with no padding.