villebro commented on a change in pull request #7643: 7620: Start removing 
dependencies on requests
URL: 
https://github.com/apache/incubator-superset/pull/7643#discussion_r298258842
 
 

 ##########
 File path: superset/connectors/druid/models.py
 ##########
 @@ -65,10 +71,15 @@
 from superset.exceptions import MetricPermException, SupersetException
 from superset.models.helpers import AuditMixinNullable, ImportMixin, 
QueryResult
 from superset.utils import core as utils, import_datasource
-from superset.utils.core import DimSelector, DTTM_ALIAS, flasher
-
-DRUID_TZ = conf.get("DRUID_TZ")
-POST_AGG_TYPE = "postagg"
+try:
+    from superset.utils.core import (
+        DimSelector, DTTM_ALIAS, flasher,
+    )
+except ImportError:
+    print(_('DimSelector depends on Having, but it is not available '
+            'because pydruid is an optional dependency'))
 
 Review comment:
   Same here.

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