better error message if reduce versions clash, reduction.py

HiPERCAM · Jun 4, 2021 · 3af816a · 3af816a
1 parent becaea4
commit 3af816a
Showing 1 changed file with 4 additions and 3 deletions.
diff --git a/hipercam/reduction.py b/hipercam/reduction.py
@@ -105,10 +105,11 @@ def read(cls, filename, readcal=True):
         if sect["version"] != hcam.REDUCE_FILE_VERSION:
             # check the version
             raise hcam.HipercamError(
-                "Version mismatch: file = {:s}, reduce = {:s}".format(
-                    sect["version"], hcam.REDUCE_FILE_VERSION
-                )
+                f"Version mismatch: reduce file = {sect['version']}, reduce = {hcam.REDUCE_FILE_VERSION}"
+                "If your reduce file date is earlier than the reduce version, you may want to try"
+                f"updating it using the pipeline command 'rupdate {filename}'"
             )
+        )
 
         sect["scale"] = float(sect["scale"])
         if sect["scale"] <= 0: