Add /downloads/latest/prerelease redirect

Author: hugovk

downloads/managers.py

@@ -35,6 +35,9 @@ def latest_python3(self, minor_version: int | None = None):
         pattern = rf"^Python 3\.{minor_version}\."
         return self.python3().filter(name__regex=pattern).order_by("-release_date")
 
+    def latest_prerelease(self):
+        return self.python3().filter(pre_release=True).order_by("-release_date")
+
     def latest_pymanager(self):
         return self.pymanager().filter(is_latest=True)
 
@@ -52,5 +55,8 @@ def latest_python2(self):
     def latest_python3(self, minor_version: int | None = None):
         return self.get_queryset().latest_python3(minor_version).first()
 
+    def latest_prerelease(self):
+        return self.get_queryset().latest_prerelease().first()
+
     def latest_pymanager(self):
         return self.get_queryset().latest_pymanager().first()

downloads/models.py

@@ -298,6 +298,7 @@ def purge_fastly_download_pages(sender, instance, **kwargs):
             match = re.match(r'^3\.(\d+)', version)
             if match:
                 purge_url(f'/downloads/latest/python3.{match.group(1)}/')
+        purge_url('/downloads/latest/prerelease/')
         purge_url('/downloads/latest/pymanager/')
         purge_url('/downloads/macos/')
         purge_url('/downloads/source/')

downloads/urls.py

@@ -6,6 +6,7 @@
     re_path(r'latest/python2/?$', views.DownloadLatestPython2.as_view(), name='download_latest_python2'),
     re_path(r'latest/python3/?$', views.DownloadLatestPython3.as_view(), name='download_latest_python3'),
     re_path(r'latest/python3\.(?P<minor>\d+)/?$', views.DownloadLatestPython3x.as_view(), name='download_latest_python3x'),
+    re_path(r'latest/prerelease/?$', views.DownloadLatestPrerelease.as_view(), name='download_latest_prerelease'),
     re_path(r'latest/pymanager/?$', views.DownloadLatestPyManager.as_view(), name='download_latest_pymanager'),
     re_path(r'latest/?$', views.DownloadLatestPython3.as_view(), name='download_latest_python3'),
     path('operating-systems/', views.DownloadFullOSList.as_view(), name='download_full_os_list'),

downloads/views.py

@@ -66,6 +66,23 @@ def get_redirect_url(self, **kwargs):
             return reverse('downloads:download')
 
 
+class DownloadLatestPrerelease(RedirectView):
+    """Redirect to latest Python 3 prerelease"""
+
+    permanent = False
+
+    def get_redirect_url(self, **kwargs):
+        try:
+            latest_prerelease = Release.objects.latest_prerelease()
+        except Release.DoesNotExist:
+            latest_prerelease = None
+
+        if latest_prerelease:
+            return latest_prerelease.get_absolute_url()
+        else:
+            return reverse("downloads:download")
+
+
 class DownloadLatestPyManager(RedirectView):
     """ Redirect to latest Python install manager release """
     permanent = False