Pluralized translatable strings in password_validation.py

Forward port of 86dc4889 from master.

django/contrib/auth/locale/en/LC_MESSAGES/django.po

@@ -4,7 +4,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Django\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2015-10-09 17:42+0200\n"
+"POT-Creation-Date: 2015-10-10 15:10+0200\n"
 "PO-Revision-Date: 2010-05-13 15:35+0200\n"
 "Last-Translator: Django team\n"
 "Language-Team: English <en@li.org>\n"
@@ -262,40 +262,46 @@ msgstr ""
 msgid "users"
 msgstr ""
 
-#: contrib/auth/password_validation.py:100
+#: contrib/auth/password_validation.py:101
 #, python-format
 msgid ""
 "This password is too short. It must contain at least %(min_length)d "
+"character."
+msgid_plural ""
+"This password is too short. It must contain at least %(min_length)d "
 "characters."
-msgstr ""
+msgstr[0] ""
+msgstr[1] ""
 
-#: contrib/auth/password_validation.py:106
+#: contrib/auth/password_validation.py:111
 #, python-format
-msgid "Your password must contain at least %(min_length)d characters."
-msgstr ""
+msgid "Your password must contain at least %(min_length)d character."
+msgid_plural "Your password must contain at least %(min_length)d characters."
+msgstr[0] ""
+msgstr[1] ""
 
-#: contrib/auth/password_validation.py:139
+#: contrib/auth/password_validation.py:147
 #, python-format
 msgid "The password is too similar to the %(verbose_name)s."
 msgstr ""
 
-#: contrib/auth/password_validation.py:145
+#: contrib/auth/password_validation.py:153
 msgid "Your password can't be too similar to your other personal information."
 msgstr ""
 
-#: contrib/auth/password_validation.py:172
+#: contrib/auth/password_validation.py:180
 msgid "This password is too common."
 msgstr ""
 
-#: contrib/auth/password_validation.py:177
+#: contrib/auth/password_validation.py:185
 msgid "Your password can't be a commonly used password."
 msgstr ""
 
-#: contrib/auth/password_validation.py:187
+#: contrib/auth/password_validation.py:195
 msgid "This password is entirely numeric."
 msgstr ""
 
-#: contrib/auth/password_validation.py:192
+#: contrib/auth/password_validation.py:200
 msgid "Your password can't be entirely numeric."
 msgstr ""
 

django/contrib/auth/password_validation.py

@@ -13,7 +13,7 @@ from django.utils.encoding import force_text
 from django.utils.html import format_html
 from django.utils.module_loading import import_string
 from django.utils.six import string_types
-from django.utils.translation import ugettext as _
+from django.utils.translation import ugettext as _, ungettext
 
 
 @lru_cache.lru_cache(maxsize=None)
@@ -97,13 +97,21 @@ class MinimumLengthValidator(object):
     def validate(self, password, user=None):
         if len(password) < self.min_length:
             raise ValidationError(
-                _("This password is too short. It must contain at least %(min_length)d characters."),
+                ungettext(
+                    "This password is too short. It must contain at least %(min_length)d character.",
+                    "This password is too short. It must contain at least %(min_length)d characters.",
+                    self.min_length
+                ),
                 code='password_too_short',
                 params={'min_length': self.min_length},
             )
 
     def get_help_text(self):
-        return _("Your password must contain at least %(min_length)d characters.") % {'min_length': self.min_length}
+        return ungettext(
+            "Your password must contain at least %(min_length)d character.",
+            "Your password must contain at least %(min_length)d characters.",
+            self.min_length
+        ) % {'min_length': self.min_length}
 
 
 class UserAttributeSimilarityValidator(object):