--- a/py_ext/py_ext_rt.py	Fri Feb 07 15:05:50 2025 +0100
+++ b/py_ext/py_ext_rt.py	Tue Feb 11 15:59:23 2025 +0100
@@ -54,7 +54,7 @@
             dialect = csv.Sniffer().sniff(csvfile.read(1024))
             csvfile.seek(0)
             reader = csv.reader(csvfile, dialect)
-            first_row = reader.__next__()
+            first_row = reader.next()
             data.append(first_row)
             col_headers = OrderedDict([(name, index+1) for index, name 
                                         in enumerate(first_row[1:])])