def num_images_in_dir(path):
    """
    returns the number of images in a directory
    """
    num_imgs = 0
    for root, dirs, files in os.walk(path):
        for fname in files:
            if fpath_has_imgext(fname):
                num_imgs += 1
    return num_imgs
def num_images_in_dir ( path ) : num_imgs = 0 for root , dirs , files in os . walk ( path ) : for fname in files : if fpath_has_imgext ( fname ) : num_imgs += 1 return num_imgs
returns the number of images in a directory