Fix problem with strftime format, reducing the time needed to format standard

time. When the %A or %B is not used.

series

@@ -24,3 +24,5 @@ worker_logger.diff #[trytond] Move exception handling into transaction to keep t
 statement_of_account.diff # [account] Cumulate balance of previous fiscal years
 
 issue11731.diff # [currency] currency test don't pass when Currency Rates Source Not Ready (forex)
+
+strftime_format.diff # [ir] Fix problem with strftime format, reducing the time needed to format standard time. When the %A or %B is not used.

strftime_format.diff

@@ -0,0 +1,13 @@
+diff --git a/tryton/trytond/trytond/ir/lang.py b/tryton/trytond/trytond/ir/lang.py
+index d6e61e3599..4f3954beef 100644
+--- a/tryton/trytond/trytond/ir/lang.py
++++ b/tryton/trytond/trytond/ir/lang.py
+@@ -542,6 +542,8 @@ class Lang(DeactivableMixin, ModelSQL, ModelView):
+         if isinstance(value, datetime.date):
+             for f, i, klass in (('%A', 6, Day), ('%B', 1, Month)):
+                 for field, f in [('name', f), ('abbreviation', f.lower())]:
++                    if f not in format:
++                        continue
+                     locale = klass.locale(self, field=field)
+                     format = format.replace(f, locale[value.timetuple()[i]])
+         if isinstance(value, datetime.time):