adapted from http://www.macstories.net/tutorials/resolve-short-urls-with-pythonista-on-ios/

Pythonista CleanURL for TextTool

import re
import string
import console
import urllib
import sys
import clipboard
import webbrowser
 
console.clear()

# Count arguments passed to script, if less than 2 run regex against clipboard
numArgs = len(sys.argv)
 
if numArgs == 2:
    redirect = sys.argv[1]
elif numArgs < 2:
    redirect = clipboard.get()
    
# Provided by Peter Hansen on StackOverflow:
# http://stackoverflow.com/questions/1986059/grubers-url-regular-expression-in-python/1986151#1986151
pat = r'\b(([\w-]+://?|www[.])[^\s()<>]+(?:\([\w\d]+\)|([^%s\s]|/)))'
pat = pat % re.escape(string.punctuation)
 

match = re.findall(pat, redirect)
 
if match:
    for x in match:
        console.show_activity()
        # Get the first match without redirects
        cleaned = urllib.urlopen(x[0]).geturl()
        final = urllib.quote(cleaned, safe='')
        
        clipboard.set(cleaned)
        console.hide_activity()
        webbrowser.open('texttool://x-callback-url/transform?text=' + final + '&method=replace&find=www&replace=dl&x-success=texttool%3A%2F%2Fx-callback-url%2Ftransform%3Ftext%3D%5B%5Boutput%5D%5D%26method%3Daffix%26prefix%3D!%255B%255D%2528%26suffix%3D%2529')
elif not match:
    console.alert('No match found')