Python PIL Paste

Question

I want to insert a bunch of images along with PIL. For some reason, when I run the blank.paste(img,(i*128,j*128)) , I get the following error: ValueError: cannot determine region size; use 4-item box ValueError: cannot determine region size; use 4-item box

I tried messing with it and used a tuple with 4 elements like this (e.g. 128 1288 1288), but it gives me this error: SystemError: new style getargs format but argument is not a tuple

Each image is 128x in size and has a naming style of "x_y.png", where x and y are from 0 to 39. My code is below.

 from PIL import Image loc = 'top right/' blank = Image.new("RGB", (6000,6000), "white") for x in range(40): for y in reversed(range(40)): file = str(x)+'_'+str(y)+'.png' img = open(loc+file) blank.paste(img,(x*128,y*128)) blank.save('top right.png') 

How can I make this work?

Answer 1

You are not loading the image correctly. The built-in open function simply opens a new file descriptor. To load an image using PIL, use Image.open instead:

 from PIL import Image im = Image.open("bride.jpg") # open the file and "load" the image in one statement 

If you have a reason to use the built-in open, do the following:

 fin = open("bride.jpg") # open the file img = Image.open(fin) # "load" the image from the opened file 

With PIL, “loading” an image means reading the image header. PIL is lazy, so it does not load the actual image data until it is needed.

Also consider using os.path.join instead of string concatenation.

Answer 2

This worked for me, I am using Odoo v9 and I have 4.0 pillow.

I did this on my server using ubuntu:

 # pip uninstall pillow # pip install Pillow==3.4.2 # /etc/init.d/odoo restart