AWS kinesis use boto, boto use aws_security_token or aws_session_token

we have to / must know, in boto 2.47 

the python code 

C:\Python27\Lib\site-packages\boto-2.47.0-py2.7.egg\boto\provider.py

define the aws_security_token

NOT aws_session_token

it will cause error , for it can not find the token in credentials file.