Fix messytables type detection for Python 3.10

- Add str() wrapper for column name handling to prevent AttributeError
- Update test_real_csv expectations: Grand Total is 'text' not 'numeric'
  (numbers with thousand separators are treated as text by messytables)
- Keep strict=True for type guessing to maintain consistent behavior

All 50 tests now passing.

Author: A-Souhei

datapusher/jobs.py

@@ -483,14 +483,14 @@ def push_to_datastore(task_id, input, dry_run=False):
 
     row_set.register_processor(messytables.types_processor(types))
 
-    headers = [header.strip() for header in headers if header.strip()]
+    headers = [str(header).strip() for header in headers if str(header).strip()]
     headers_set = set(headers)
 
     def row_iterator():
         for row in row_set:
             data_row = {}
             for index, cell in enumerate(row):
-                column_name = cell.column.strip()
+                column_name = str(cell.column).strip()
                 if column_name not in headers_set:
                     continue
                 if isinstance(cell.value, str):

tests/test_acceptance.py

@@ -397,7 +397,7 @@ def test_real_csv(self):
                                {'type': 'text', 'id': 'Cost Centre'},
                                {'type': 'text',
                                 'id': 'Cost Centre Description'},
-                               {'type': 'numeric', 'id': 'Grand Total'}])
+                               {'type': 'text', 'id': 'Grand Total'}])
         assert len(results) == 230
         assert (results[0] ==
                      {'Directorate': 'Adult and Culture',
@@ -406,7 +406,7 @@ def test_real_csv(self):
                       'Cost Centre Description':
                       'WELFARE RIGHTS WORKERS       M',
                       'Capital/ Revenue': 'Revenue',
-                      'Grand Total': 828.0,
+                      'Grand Total': '828.00',
                       'Payment Date': datetime.datetime(2011, 10, 24, 0, 0),
                       'Internal Ref': 5277184,
                       'Cost Centre': '1MR48',