Use underscores to notate 1000s

This is easier to read than using multiplication, or nothing.

app/config.py

@@ -34,28 +34,28 @@ class Config(object):
     DEFAULT_SERVICE_LIMIT = 50
     DEFAULT_FREE_SMS_FRAGMENT_LIMITS = {
         'central': {
-            2020: 250000,
+            2020: 250_000,
         },
         'local': {
-            2020: 25000,
+            2020: 25_000,
         },
         'nhs_central': {
-            2020: 250000,
+            2020: 250_000,
         },
         'nhs_local': {
-            2020: 25000,
+            2020: 25_000,
         },
         'nhs_gp': {
-            2020: 25000,
+            2020: 25_000,
         },
         'emergency_service': {
-            2020: 25000,
+            2020: 25_000,
         },
         'school_or_college': {
-            2020: 25000,
+            2020: 25_000,
         },
         'other': {
-            2020: 25000,
+            2020: 25_000,
         },
     }
     EMAIL_EXPIRY_SECONDS = 3600  # 1 hour

tests/app/main/views/test_add_service.py

@@ -242,14 +242,14 @@ def test_get_should_only_show_nhs_org_types_radios_if_user_has_nhs_email(
 
 
 @pytest.mark.parametrize('financial_year, organisation_type, free_allowance', [
-    (2020, 'central', 250 * 1000),
+    (2020, 'central', 250_000),
-    (2020, 'local', 25 * 1000),
+    (2020, 'local', 25_000),
-    (2020, 'nhs_central', 250 * 1000),
+    (2020, 'nhs_central', 250_000),
-    (2020, 'nhs_local', 25 * 1000),
+    (2020, 'nhs_local', 25_000),
-    (2020, 'nhs_gp', 25 * 1000),
+    (2020, 'nhs_gp', 25_000),
-    (2020, 'school_or_college', 25 * 1000),
+    (2020, 'school_or_college', 25_000),
-    (2020, 'emergency_service', 25 * 1000),
+    (2020, 'emergency_service', 25_000),
-    (2020, 'other', 25 * 1000),
+    (2020, 'other', 25_000),
 ])
 def test_should_add_service_and_redirect_to_dashboard_when_existing_service(
     app_,