def sign_url(url,key,secret):
        import hmac
        from hashlib import sha1
        import urllib
        import base64
        url = url + 'ApplicationKey=' + key
        byteSecret = bytes(secret, 'utf-8')
        digest = hmac.digest(byteSecret,bytes(url, 'utf-8'),sha1)
        signature = base64.b64encode(digest).decode('UTF-8')
        signature = '&Signature=' + signature
        url = url + signature
        print(url);

sign_url('https://webservices.esd.org.uk/areas/E06000027/bounds?','fmYeaHEfiipJcHQkJOgDPBgYWsksggGDKupVRXnM','ZPEmyyRcyXQTgCCQuJgm')