def token_gen_call(username, password):
    """Authenticate and return a token"""
    secret_key = 'super-secret-key-please-change'
    mockusername = 'User2'
    mockpassword = 'Mypassword'
    if mockpassword == password and mockusername == username: # This is an example. Don't do that.
        return {"token" : jwt.encode({'user': username, 'data': 'mydata'}, secret_key, algorithm='HS256')}
    return 'Invalid username and/or password for user: {0}'.format(username)