From 97cbfee5e29fc362d87970215f51f38d5ca90fb8 Mon Sep 17 00:00:00 2001
From: "m.uowis" <37022952+s3n-w6i@users.noreply.github.com>
Date: Thu, 29 Jan 2026 15:20:33 +0100
Subject: [PATCH 1/2] Add debugging

---
 preciceprofiling/common.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/preciceprofiling/common.py b/preciceprofiling/common.py
index 3d3a473..bea3850 100644
--- a/preciceprofiling/common.py
+++ b/preciceprofiling/common.py
@@ -148,6 +148,7 @@ def toDataFrame(self, participant=None, event=None):
 
     def toExportDataFrame(self, unit):
         dataFields = self.allDataFields()
+        print(dataFields)
         schema = [
             ("participant", pl.Utf8),
             ("rank", pl.Int32),

From e8b536476a5ebf6098ac3424c914b2860425fa1c Mon Sep 17 00:00:00 2001
From: s3n-w6i <37022952+s3n-w6i@users.noreply.github.com>
Date: Thu, 29 Jan 2026 17:20:24 +0100
Subject: [PATCH 2/2] Add assertion that event data name must not match
 built-in names

Otherwise, this will cause the program to error with a column count
mismatch error. This is really hard to understand.
---
 preciceprofiling/common.py | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/preciceprofiling/common.py b/preciceprofiling/common.py
index bea3850..67a98dd 100644
--- a/preciceprofiling/common.py
+++ b/preciceprofiling/common.py
@@ -148,7 +148,15 @@ def toDataFrame(self, participant=None, event=None):
 
     def toExportDataFrame(self, unit):
         dataFields = self.allDataFields()
-        print(dataFields)
+
+        for dataField in dataFields:
+            assert not contains(
+                ["participant", "rank", "size", "event", "timestamp", "duration"],
+                dataField,
+            ), (
+                f"Event data must not be named '{dataField}', because it collides with a built-in name"
+            )
+
         schema = [
             ("participant", pl.Utf8),
             ("rank", pl.Int32),