Decode the hashed token conditionally

Start accepting the fingerprint parameter for GitHub#authorize and
alias GitHub#authorize to GitHub#create_authorization

github3/auths.py

@@ -59,7 +59,9 @@ class Authorization(models.GitHubCore):
         #: base64-encoded of the SHA-256 digest of the token
         self.hashed_token = auth.get('hashed_token')
         #: SHA-256 digest of the token (derived from ``hashed_token``)
-        self.sha256_hashed_token = base64.b64decode(self.hashed_token)
+        self.sha256_hashed_token = None
+        if self.hashed_token:
+            self.sha256_hashed_token = base64.b64decode(self.hashed_token)
         #: A string that distinguishes the new authorization from others for
         #: the same client ID and user
         self.fingerprint = auth.get('fingerprint')

github3/github.py

@@ -144,7 +144,7 @@ class GitHub(GitHubCore):
         return self._iter(int(number), url, Authorization, etag=etag)
     def authorize(self, username, password, scopes=None, note='', note_url='',
-                  client_id='', client_secret=''):
+                  client_id='', client_secret='', fingerprint=''):
         """Obtain an authorization token.
         The retrieved token will allow future consumers to use the API without
@@ -170,12 +170,16 @@ class GitHub(GitHubCore):
                     'client_id': client_id, 'client_secret': client_secret}
             if scopes:
                 data['scopes'] = scopes
+            if fingerprint:
+                data['fingerprint'] = fingerprint
             with self.session.temporary_basic_auth(username, password):
                 json = self._json(self._post(url, data=data), 201)
         return self._instance_or_null(Authorization, json)
+    create_authorization = authorize
+
     def check_authorization(self, access_token):
         """Check an authorization created by a registered application.