simple script for downloading the latest chromedriver with python

downloadLatestChromeDriver.py

import requests
from xml.dom import minidom
from subprocess import call
from distutils.version import StrictVersion

def checkValidVersion(s):
    if len(s) < 1:
        return None
    try:
        parsed = float(s[:-1])
        if parsed:
        	# parseable, but we want the string
        	return s[:-1]
    except ValueError:
        pass

page = requests.get('https://chromedriver.storage.googleapis.com/?delimiter=/&prefix=').text
xml = minidom.parseString(page)
versionNodes = xml.getElementsByTagName('Prefix')
versions = [ checkValidVersion(n.firstChild.nodeValue) for n in versionNodes if n.firstChild ]
versions = [ v for v in versions if v is not None]
versions.sort(key=StrictVersion)

if len(versions) > 1:
    latest = versions[-1]
    print('downloading version %s'%latest)
    r = requests.get('https://chromedriver.storage.googleapis.com/%s/chromedriver_win32.zip'%latest, stream=True)
    with open('chromedriver.zip', 'wb') as f:
        for chunk in r.iter_content(chunk_size=1024): 
            if chunk: # filter out keep-alive new chunks
                f.write(chunk)

    # simply call the unzip tool (must be available in path), using pythons zipfile package didn't work (incompatible format)
    call(['unzip', 'chromedriver.zip'])
else:
    print('no valid version found')