import member data from Sussex Wildlife Trust

Fixes #555

hub/management/commands/import_sussex_wt_member_count.py

@@ -0,0 +1,48 @@
+from django.conf import settings
+
+import pandas as pd
+
+from hub.models import DataSet
+
+from .base_importers import BaseImportFromDataFrameCommand
+
+
+class Command(BaseImportFromDataFrameCommand):
+    help = "Import Sussex Wildlife Trust member counts for post 2024 constituencies"
+
+    message = "importing sussex wildlife trust member counts"
+    cons_row = "constituency"
+    cons_col = "constituency"
+    data_file = settings.BASE_DIR / "data" / "sussex_wt_member_counts.csv"
+    uses_gss = False
+
+    area_type = "WMC23"
+
+    data_sets = {
+        "sussex_wt_members": {
+            "defaults": {
+                "label": "Sussex Wildlife Trust members",
+                "data_type": "integer",
+                "category": "movement",
+                "subcategory": "places_and_spaces",
+                "release_date": "May 2024",
+                "source_label": "Data from Sussex Wildlife Trust.",
+                "source": "",
+                "source_type": "csv",
+                "data_url": "",
+                "table": "areadata",
+                "default_value": 10,
+                "exclude_countries": ["Scotland", "Northern Ireland"],
+                "comparators": DataSet.numerical_comparators(),
+                "unit_type": "raw",
+                "unit_distribution": "people_in_area",
+                "fill_blanks": False,
+            },
+            "col": "sussex_wt_members_may_2024",
+        }
+    }
+
+    def get_dataframe(self):
+        df = pd.read_csv(self.data_file)
+        df = df.astype({self.get_cons_col(): "str"})
+        return df