Xonsh: "c" - creates pretty part of the URL, "resizeDir" - resize and auto orient images in given directory

.xonshrc

import unicodedata

def cData_(x):
    s = unicodedata.normalize('NFKD', x).encode('ascii', 'ignore').lower().decode('ascii')
    newS = ''.join(map(lambda x: x if x.isalnum() else '-', s))
    oldS = None
    while oldS != newS:
        oldS = newS
        newS = newS.replace('--', '-')
    if newS:
        if newS[-1] == '-':
            newS = newS[:-1]
    print(newS)
    return None

aliases['c'] = lambda a,b: cData_(' '.join(a))

import os
import glob
import PIL.Image # Pillow python library

def resizeDir(path = '', autoOrient = True):
    if path:
        path += '/'

    for pattern in ('*.jpg', '*.JPG', '*.png', '*.PNG'):
        for x in glob.glob(path + pattern):

            if not autoOrient:
                try:
                    if max(PIL.Image.open(x).size) <= 2048:
                        continue
                except Exception as e:
                    print(x, e)
                    continue

            rname = x + '_resized.jpg'
            if autoOrient:
                conv = !(convert @(x) -auto-orient -resize '2048x2048>' @(rname))
            else:
                conv = !(convert @(x) -resize '2048x2048>' @(rname))

            if (conv.rtn == 0) and (autoOrient or not conv.errors):
                os.rename(rname, x)
            else:
                print(x)
                try:
                    os.remove(rname)
                except Exception:
                    pass