import os
from PIL import Image

""" Images cropping, in place"""

def is_picture(entry):
    """Return True if DirEntry is a picture"""
    extension = ("jpg","png")
    for ext in extension:
        if entry.name.endswith('.'+ext):
            return True
    return False

def get_pictures(path):
    """Scan directory for pictures return DirEntry list of files"""
    pictures = []
    with os.scandir(path) as it:
        for entry in it:
            if not entry.name.startswith('.') \
                    and entry.is_file(follow_symlinks=False) \
                    and is_picture(entry):
                pictures.append(entry)
    return pictures

def crop(image_path, coords):
    image_obj = Image.open(image_path)
    cropped_image = image_obj.crop(coords)
    cropped_image.save(image_path)

if __name__ == "__main__":
    """ coordinates x1 y1 x2 y2,
    get it from gimp selection tool"""
    pics = get_pictures('/home/nicolas/tmp')
    for p in pics:
        crop(p.path, (19,122,499,460))