You can do the following: Python 2.x import hashlib print hashlib.md5(“whatever your string is”).hexdigest() Python 3.x import hashlib print(hashlib.md5(“whatever your string is”.encode(‘utf-8′)).hexdigest()) However in this case you’re probably better off using this helpful Python module for interacting with the Flickr API: http://stuvel.eu/flickrapi … which will deal with the authentication for you. Official documentation of hashlib
You can write custom deserializer for this class. It could look like this: class FlickrAccountJsonDeserializer extends JsonDeserializer<FlickrAccount> { @Override public FlickrAccount deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException, JsonProcessingException { Root root = jp.readValueAs(Root.class); FlickrAccount account = new FlickrAccount(); if (root != null && root.user != null) { account.setId(root.user.id); if (root.user.username != null) { account.setUsername(root.user.username.content); } … Read more