From aadd3aeb2ba3153e35bd805c80c901f289a6f333 Mon Sep 17 00:00:00 2001
From: Sergey Fedoseev <fedoseev.sergey@gmail.com>
Date: Mon, 31 Jul 2017 20:02:23 +0500
Subject: Avoided creating temporary lists for obtaining the first item.

---
 django/forms/utils.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'django/forms')

diff --git a/django/forms/utils.py b/django/forms/utils.py
index 587cea85a3..9bdaffa44b 100644
--- a/django/forms/utils.py
+++ b/django/forms/utils.py
@@ -95,7 +95,7 @@ class ErrorList(UserList, list):
     def get_json_data(self, escape_html=False):
         errors = []
         for error in self.as_data():
-            message = list(error)[0]
+            message = next(iter(error))
             errors.append({
                 'message': escape(message) if escape_html else message,
                 'code': error.code or '',
@@ -133,7 +133,7 @@ class ErrorList(UserList, list):
     def __getitem__(self, i):
         error = self.data[i]
         if isinstance(error, ValidationError):
-            return list(error)[0]
+            return next(iter(error))
         return error
 
     def __reduce_ex__(self, *args, **kwargs):
-- 
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