Add google-endpoints to third_party/.

third_party/google-endpoints/dogpile/cache/exception.py

+"""Exception classes for dogpile.cache."""
+
+
+class DogpileCacheException(Exception):
+    """Base Exception for dogpile.cache exceptions to inherit from."""
+
+
+class RegionAlreadyConfigured(DogpileCacheException):
+    """CacheRegion instance is already configured."""
+
+
+class RegionNotConfigured(DogpileCacheException):
+    """CacheRegion instance has not been configured."""
+
+
+class ValidationError(DogpileCacheException):
+    """Error validating a value or option."""