Re: [PR] fix(mcp): fix crashes in list tools, dataset info, chart preview, and add owner/favorite filters [superset]

["aminghadersohi (via GitHub)" <gi...@apache.org>]

aminghadersohi commented on code in PR #38277:
URL: https://github.com/apache/superset/pull/38277#discussion_r2880001527


##########
superset/mcp_service/chart/preview_utils.py:
##########
@@ -182,19 +182,23 @@ def _calculate_column_widths(
 def _format_value(val: Any, width: int) -> str:
     """Format a value based on its type."""
     if isinstance(val, float):
-        if abs(val) >= 1000000:
+        import math
+
+        if math.isnan(val):
+            val_str = "N/A"
+        elif math.isfinite(val) and val.is_integer():
+            # Integer-like float (e.g. 1988.0) — format without decimals
+            val_str = str(int(val))
+        elif abs(val) >= 1000000:
             val_str = f"{val:.2e}"  # Scientific notation for large numbers
         elif abs(val) >= 1000:
             val_str = f"{val:,.2f}"  # Thousands separator
         else:
             val_str = f"{val:.2f}"

Review Comment:
   Good catch. Changed to `:g` format to preserve significant digits. Fixed in b755de7.



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