for district in [d for d in districts_sorted if not d=='sum']:
prev_date = date - datetime.timedelta(days=1)
if prev_date not in dates_sorted:
for district in [d for d in districts_sorted if not d=='sum']:
prev_date = date - datetime.timedelta(days=1)
if prev_date not in dates_sorted:
prev_total = data[date - datetime.timedelta(days=1)][district]['total']
cur_total = data[date][district]['total']
if cur_total - data[date][district]['growth'] != prev_total:
prev_total = data[date - datetime.timedelta(days=1)][district]['total']
cur_total = data[date][district]['total']
if cur_total - data[date][district]['growth'] != prev_total: