Fixed #30899 -- Lazily compiled import time regular expressions.

1 files changed, 7 insertions, 7 deletions

diff --git a/django/utils/dateparse.py b/django/utils/dateparse.py
index f90d952581..d142e161b6 100644
--- a/django/utils/dateparse.py
+++ b/django/utils/dateparse.py
@@ -6,27 +6,27 @@
 # - The date/datetime/time constructors produce friendlier error messages.
 
 import datetime
-import re
 
+from django.utils.regex_helper import _lazy_re_compile
 from django.utils.timezone import get_fixed_timezone, utc
 
-date_re = re.compile(
+date_re = _lazy_re_compile(
     r'(?P<year>\d{4})-(?P<month>\d{1,2})-(?P<day>\d{1,2})$'
 )
 
-time_re = re.compile(
+time_re = _lazy_re_compile(
     r'(?P<hour>\d{1,2}):(?P<minute>\d{1,2})'
     r'(?::(?P<second>\d{1,2})(?:\.(?P<microsecond>\d{1,6})\d{0,6})?)?'
 )
 
-datetime_re = re.compile(
+datetime_re = _lazy_re_compile(
     r'(?P<year>\d{4})-(?P<month>\d{1,2})-(?P<day>\d{1,2})'
     r'[T ](?P<hour>\d{1,2}):(?P<minute>\d{1,2})'
     r'(?::(?P<second>\d{1,2})(?:\.(?P<microsecond>\d{1,6})\d{0,6})?)?'
     r'(?P<tzinfo>Z|[+-]\d{2}(?::?\d{2})?)?$'
 )
 
-standard_duration_re = re.compile(
+standard_duration_re = _lazy_re_compile(
     r'^'
     r'(?:(?P<days>-?\d+) (days?, )?)?'
     r'(?P<sign>-?)'
@@ -39,7 +39,7 @@ standard_duration_re = re.compile(
 
 # Support the sections of ISO 8601 date representation that are accepted by
 # timedelta
-iso8601_duration_re = re.compile(
+iso8601_duration_re = _lazy_re_compile(
     r'^(?P<sign>[-+]?)'
     r'P'
     r'(?:(?P<days>\d+(.\d+)?)D)?'
@@ -54,7 +54,7 @@ iso8601_duration_re = re.compile(
 # Support PostgreSQL's day-time interval format, e.g. "3 days 04:05:06". The
 # year-month and mixed intervals cannot be converted to a timedelta and thus
 # aren't accepted.
-postgres_interval_re = re.compile(
+postgres_interval_re = _lazy_re_compile(
     r'^'
     r'(?:(?P<days>-?\d+) (days? ?))?'
     r'(?:(?P<sign>[-+])?'