Comparison for Image Resize: Python3, os.chdir(), os.listdir(), PIL.Image()

gm_resize.py

#! /bin/python3
'''`gm_resize` module contains `gm_resize()` method for resizing an image.'''
from os import chdir
from os import listdir
from PIL import Image


def gm_resize():
    '''A dimensional comparison is used to determine whether an image should \
be resized based on image width or image height.'''
    chdir('/usr/local/lib/scifi_wallpaper/img')
    imgs = sorted(listdir('.'))
    for img in imgs:
        img_obj = Image.open(f'/usr/local/lib/scifi_wallpaper/img/{img}')
        print(f'\x1b[1;34mName\x1b[0m: {img} {img_obj.size}')
        print(f'\x1b[1;33mWidth-based\x1b[0m: \
{((1600.0 / img_obj.width) * img_obj.width > 1600.0)} \
| \x1b[1;32mgm mogrify -resize 1600x\x1b[0m foo.jpg')
        print(f'\x1b[1;33mHeight-based\x1b[0m: \
{((900.0 / img_obj.height) * img_obj.height > 900.0)} \
| \x1b[1;32mgm mogrify -resize x900\x1b[0m foo.jpg')
        print(f'\x1b[1;35m--------------------------------------------\x1b[0m')


if __name__ == '__main__':
    gm_resize()