Get Play Store Application Version

get_version.py

import requests
import urllib
import re
import argparse
import logging

logging.basicConfig(level=logging.INFO)
logger = logging.getLogger("getversion")

PLAY_URL_FMT_STR = "https://play.google.com/store/apps/details?id=%s&hl=%s&gl=%s"
VERSION_RE = re.compile("Current Version.*?>([a-zA-Z0-9\.\- ]+)<", re.M)

def parse_app_version(content):
    result = VERSION_RE.search(content)
    if result:
        return result.groups(1)

def get_app_version(app_name):
    hl = "en_US"
    gl = "US"
    url = PLAY_URL_FMT_STR % (app_name, hl, gl)
    response = requests.get(url)
    data = response.content.decode("utf8")
    result = parse_app_version(data)
    if result is None or len(result[0]) < 2:
        index = data.find("Current Version")
        if index != -1:
            # if we did find a fragment of the regular expression, emit a log message that shows
            # where the RE may have failed.
            logger.warning("Failed to get version data:\'%s'" % (data[index:index + 256]))
    return result

def parse_args():
    ap = argparse.ArgumentParser()
    ap.add_argument("app_name")
    args = ap.parse_args()
    return args

def main():
    args = parse_args()
    version = get_app_version(args.app_name)
    logger.info("Got version: %s" % version)

if __name__ == "__main__":
    main()

Tested against this list of appids. Note that google uses "Varies by version" as a version for some of these, so our RE matches horrendous things like that.