Install Xcode and Xcode Command Line Tools as mentioned. Use Pillow instead, as PIL is basically dead. Pillow is a maintained fork of PIL. https://pypi.org/project/Pillow/ pip install Pillow If you have both Pythons installed and want to install this for Python3: python3 -m pip install Pillow
from PIL import Image im = Image.open(‘whatever.png’) width, height = im.size According to the documentation.
You’re not saying how exactly putdata() is not behaving. I’m assuming you’re doing >>> pic.putdata(a) Traceback (most recent call last): File “…blablabla…/PIL/Image.py”, line 1185, in putdata self.im.putdata(data, scale, offset) SystemError: new style getargs format but argument is not a tuple This is because putdata expects a sequence of tuples and you’re giving it a numpy … Read more
Define a maximum size. Then, compute a resize ratio by taking min(maxwidth/width, maxheight/height). The proper size is oldsize*ratio. There is of course also a library method to do this: the method Image.thumbnail. Below is an (edited) example from the PIL documentation. import os, sys import Image size = 128, 128 for infile in sys.argv[1:]: outfile … Read more