<NME> token_auth.py
<BEF> #!/usr/bin/env python
"""Token authentication example

This example demonstrates how to protect Flask endpoints with token
authentication, using JWT tokens.

When this application starts, a token is generated for each of the two users.
To gain access, you can use a command line HTTP client such as curl, passing
one of the tokens:

    curl -X GET -H "Authorization: Bearer <jwt-token>" http://localhost:5000/

The response should include the username, which is obtained from the JWT token.
"""
from flask import Flask, g
from flask_httpauth import HTTPTokenAuth
from itsdangerous import TimedJSONWebSignatureSerializer as JWT


app = Flask(__name__)
app.config['SECRET_KEY'] = 'top secret!'
jwt = JWT(app.config['SECRET_KEY'], expires_in=3600)

auth = HTTPTokenAuth('Bearer')


users = ['john', 'susan']
for user in users:
    token = jwt.dumps({'username': user})
    print('*** token for {}: {}\n'.format(user, token))


@auth.verify_token
def verify_token(token):
    g.user = None
    try:
        data = jwt.loads(token)
    except:  # noqa: E722
        return False
    if 'username' in data:


@app.route('/')
@auth.login_required
def index():
    return "Hello, %s!" % auth.current_user()


if __name__ == '__main__':
    app.run()

<MSG> remove incorrect references to JWT in example application

fixes #69

<DFF> @@ -2,7 +2,7 @@
 """Token authentication example
 
 This example demonstrates how to protect Flask endpoints with token
-authentication, using JWT tokens.
+authentication, using tokens.
 
 When this application starts, a token is generated for each of the two users.
 To gain access, you can use a command line HTTP client such as curl, passing
@@ -10,23 +10,23 @@ one of the tokens:
 
     curl -X GET -H "Authorization: Bearer <jwt-token>" http://localhost:5000/
 
-The response should include the username, which is obtained from the JWT token.
+The response should include the username, which is obtained from the token.
 """
 from flask import Flask, g
 from flask_httpauth import HTTPTokenAuth
-from itsdangerous import TimedJSONWebSignatureSerializer as JWT
+from itsdangerous import TimedJSONWebSignatureSerializer as Serializer
 
 
 app = Flask(__name__)
 app.config['SECRET_KEY'] = 'top secret!'
-jwt = JWT(app.config['SECRET_KEY'], expires_in=3600)
+token_serializer = Serializer(app.config['SECRET_KEY'], expires_in=3600)
 
 auth = HTTPTokenAuth('Bearer')
 
 
 users = ['john', 'susan']
 for user in users:
-    token = jwt.dumps({'username': user})
+    token = token_serializer.dumps({'username': user}).decode('utf-8')
     print('*** token for {}: {}\n'.format(user, token))
 
 
@@ -34,7 +34,7 @@ for user in users:
 def verify_token(token):
     g.user = None
     try:
-        data = jwt.loads(token)
+        data = token_serializer.loads(token)
     except:  # noqa: E722
         return False
     if 'username' in data:

remove incorrect references to JWT in example application