Add script to import old member counts from csv

apiserver/.gitignore

@@ -113,3 +113,4 @@ old_paypal/
 missing_paypal/
 backups/
 secrets.py
+old_counts.csv

apiserver/import_member_counts.py

@@ -0,0 +1,21 @@
+# Expects a old_counts.csv of the historical counts in format:
+# date,member_count,green_count
+
+import django, sys, os
+os.environ['DJANGO_SETTINGS_MODULE'] = 'apiserver.settings'
+django.setup()
+
+import csv
+from apiserver.api import models
+
+with open('old_counts.csv', newline='') as csvfile:
+    reader = csv.DictReader(csvfile)
+    for row in reader:
+        print('Adding', row['date'], row['member_count'], row['green_count'])
+
+        models.StatsMemberCount.objects.update_or_create(
+            date=row['date'],
+            defaults=dict(member_count=row['member_count'], green_count=row['green_count']),
+        )
+
+print('Done.')