python(bugfix): Support windows mimetypes for csv upload (#143)

python/lib/sift_py/data_import/_csv_test.py

@@ -67,7 +67,7 @@ def test_csv_upload_service_upload_validate_mime_type(mocker: MockFixture):
             csv_config=csv_config,
         )
 
-    with pytest.raises(Exception, match="Must be text or csv"):
+    with pytest.raises(Exception, match="Must be"):
         svc = CsvUploadService(rest_config)
         svc.upload(
             path="some_file.pdf",

python/lib/sift_py/data_import/csv.py

@@ -244,8 +244,11 @@ def _validate_file_type(self, path: Union[str, Path]) -> Optional[str]:
         if not mimetype:
             raise Exception(f"The MIME-type of '{posix_path}' could not be computed.")
 
-        if mimetype not in ["test/plain", "text/csv"]:
-            raise Exception(f"{path} is not a valid file type. Must be text or csv.")
+        valid_types = ["test/plain", "text/csv", "application/vnd.ms-excel"]
+        if mimetype not in valid_types:
+            raise Exception(
+                f"{path} is not a valid file type ({mimetype}). Must be {', '.join(valid_types)}."
+            )
 
         return content_encoding