From e3d0b4d5501c6d0bc39f035e4345e5bdfde12e41 Mon Sep 17 00:00:00 2001
From: Hasan Ramezani <hasan.r67@gmail.com>
Date: Sat, 26 Oct 2019 16:42:32 +0200
Subject: Fixed #30899 -- Lazily compiled import time regular expressions.

---
 django/db/backends/sqlite3/base.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'django/db/backends/sqlite3/base.py')

diff --git a/django/db/backends/sqlite3/base.py b/django/db/backends/sqlite3/base.py
index f959f921f1..45a22f5a36 100644
--- a/django/db/backends/sqlite3/base.py
+++ b/django/db/backends/sqlite3/base.py
@@ -23,6 +23,7 @@ from django.utils import timezone
 from django.utils.asyncio import async_unsafe
 from django.utils.dateparse import parse_datetime, parse_time
 from django.utils.duration import duration_microseconds
+from django.utils.regex_helper import _lazy_re_compile
 
 from .client import DatabaseClient                          # isort:skip
 from .creation import DatabaseCreation                      # isort:skip
@@ -380,7 +381,7 @@ class DatabaseWrapper(BaseDatabaseWrapper):
         return self.creation.is_in_memory_db(self.settings_dict['NAME'])
 
 
-FORMAT_QMARK_REGEX = re.compile(r'(?<!%)%s')
+FORMAT_QMARK_REGEX = _lazy_re_compile(r'(?<!%)%s')
 
 
 class SQLiteCursorWrapper(Database.Cursor):
-- 
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