GCE creds fix (#192)

pjbull · web-flow · commit 3827cd813493 · 2022-01-22T16:59:51.000-08:00
diff --git a/HISTORY.md b/HISTORY.md
@@ -3,7 +3,7 @@
 ## Unreleased (2022-01-05)
 
  - Fixed error when "directories" created on AWS S3 were reported as files. ([Issue #148](https://github.com/drivendataorg/cloudpathlib/issues/148), [PR #190](https://github.com/drivendataorg/cloudpathlib/pull/190))
-
+ - Fixed bug where GCE machines can instantiate default client, but we don't attempt it. ([Issue #191](https://github.com/drivendataorg/cloudpathlib/issues/191)
 
 ## v0.6.4 (2021-12-29)
 
diff --git a/cloudpathlib/gs/gsclient.py b/cloudpathlib/gs/gsclient.py
@@ -11,8 +11,10 @@
     if TYPE_CHECKING:
         from google.auth.credentials import Credentials
 
+    from google.auth.exceptions import DefaultCredentialsError
     from google.cloud.storage import Client as StorageClient
 
+
 except ModuleNotFoundError:
     implementation_registry["gs"].dependencies_loaded = False
 
@@ -74,7 +76,10 @@ def __init__(
         elif application_credentials is not None:
             self.client = StorageClient.from_service_account_json(application_credentials)
         else:
-            self.client = StorageClient.create_anonymous_client()
+            try:
+                self.client = StorageClient()
+            except DefaultCredentialsError:
+                self.client = StorageClient.create_anonymous_client()
 
         super().__init__(local_cache_dir=local_cache_dir)
 
