fix anonymous credential obj

Author: l-iberty

qcloud_cos/cos_auth.py

@@ -45,8 +45,10 @@ def filter_headers(data):
 class CosS3Auth(AuthBase):
 
     def __init__(self, conf, key=None, params={}, expire=10000, sign_host=None):
-        self._secret_id = conf._secret_id if conf._secret_id else conf._credential_inst.secret_id
-        self._secret_key = conf._secret_key if conf._secret_key else conf._credential_inst.secret_key
+        self._secret_id = conf._secret_id if conf._secret_id else \
+            (conf._credential_inst.secret_id if conf._credential_inst else None)
+        self._secret_key = conf._secret_key if conf._secret_key else \
+            (conf._credential_inst.secret_key if conf._credential_inst else None)
         self._anonymous = conf._anonymous
         self._expire = expire
         self._params = params

qcloud_cos/cos_client.py

@@ -127,6 +127,7 @@ def __init__(self, Appid=None, Region=None, SecretId=None, SecretKey=None, Token
         elif self._anonymous:
             self._secret_id = None
             self._secret_key = None
+            self._credential_inst = None
         else:
             raise CosClientError('SecretId and SecretKey is Required!')