Fix for metadata entries table for MOR tables containing Delete Files.

Author: guptaakashdeep

pyiceberg/table/inspect.py

@@ -205,9 +205,13 @@ def _readable_metrics_struct(bound_type: PrimitiveType) -> pa.StructType:
                             "record_count": entry.data_file.record_count,
                             "file_size_in_bytes": entry.data_file.file_size_in_bytes,
                             "column_sizes": dict(entry.data_file.column_sizes),
-                            "value_counts": dict(entry.data_file.value_counts),
-                            "null_value_counts": dict(entry.data_file.null_value_counts),
-                            "nan_value_counts": dict(entry.data_file.nan_value_counts),
+                            "value_counts": dict(entry.data_file.value_counts) if entry.data_file.value_counts else {},
+                            "null_value_counts": dict(entry.data_file.null_value_counts)
+                            if entry.data_file.null_value_counts
+                            else {},
+                            "nan_value_counts": dict(entry.data_file.nan_value_counts)
+                            if entry.data_file.nan_value_counts
+                            else {},
                             "lower_bounds": entry.data_file.lower_bounds,
                             "upper_bounds": entry.data_file.upper_bounds,
                             "key_metadata": entry.data_file.key_metadata,