安装 aliyun sts python SDK 错误?

python3 安装
aliyun-python-sdk-core (2.0.37)
aliyun-python-sdk-sts (2.1.6)

运行时出现错误：
[GCC 4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.57)] on darwin
Type "help", "copyright", "credits" or "license" for more information.

from aliyunsdkcore import client
Traceback (most recent call last):

File "", line 1, in
File "/usr/local/lib/python3.5/site-packages/aliyunsdkcore/client.py", line 26, in

from .profile import region_provider

File "/usr/local/lib/python3.5/site-packages/aliyunsdkcore/profile/region_provider.py", line 65

except Exception, ex:
                ^

SyntaxError: invalid syntax