improve error messages

vega · Feb 18, 2023 · e0cda9e · e0cda9e
1 parent 17f51f9
commit e0cda9e
Showing 1 changed file with 5 additions and 3 deletions.
diff --git a/altair/utils/data.py b/altair/utils/data.py
@@ -284,10 +284,12 @@ def import_pyarrow_interchange():
         return pi
     except pkg_resources.DistributionNotFound:
         # The package is not installed
-        raise ImportError("The package 'pyarrow' is required, but not installed")
+        raise ImportError(
+            "Usage of the DataFrame Interchange Protocol requires the package 'pyarrow', but it is not installed."
+        )
     except pkg_resources.VersionConflict:
         # The package is installed but does not meet the minimum version requirement
         raise ImportError(
-            "The installed version of 'pyarrow' does not meet "
-            "the minimum requirement of version 11.0.0."
+            "The installed version of 'pyarrow' does not meet the minimum requirement of version 11.0.0. "
+            "Please update 'pyarrow' to use the DataFrame Interchange Protocol."
         )