Use format() to concanate str and int

test/cosmos.py

@@ -105,13 +105,13 @@ def delete_droplet(id: int):
 
 def get_domain_record(domain: str, id: int):
     """Get details for given domain record."""
-    response = request_api('domains/' + domain + '/records/' + str(id))
+    response = request_api('domains/{0}/records/{1}'.format(domain, id))
     return response['domain_record']
 
 
 def get_domain_records(domain: str):
     """Get domain records for given domain."""
-    response = request_api('domains/' + domain + '/records')
+    response = request_api('domains/{0}/records'.format(domain))
     return response['domain_records']