Add more informative error message when passed primitive not found

GeminiDRSoftware · Nov 18, 2022 · 126541a · 126541a
1 parent a25f0ef
commit 126541a
Showing 1 changed file with 6 additions and 2 deletions.
diff --git a/gempy/scripts/showpars.py b/gempy/scripts/showpars.py
@@ -54,8 +54,12 @@ def get_pars(filename, adpkg=None, drpkg=None):
 
 
 def showpars(pobj, primname, tags, show_docstring):
-    print(f"Dataset tagged as {tags}")
-    print(f"\nSettable parameters on '{primname}':")
+    print(f"Dataset tagged as {tags}\n")
+    if primname not in pobj.params:
+        raise KeyError(f"{primname} doesn't exist for "
+                       "this data type.")
+
+    print(f"Settable parameters on '{primname}':")
     print("=" * 40)
     print(f"{'Name':20s} {'Current setting':20s} Description\n")