prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  Blacklisting project does not purge the cache
  
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  --- BEGIN FILES ---
  Path: `warehouse/admin/utils.py`
  Content:
  ```
  1 # Licensed under the Apache License, Version 2.0 (the "License");
  2 # you may not use this file except in compliance with the License.
  3 # You may obtain a copy of the License at
  4 #
  5 # http://www.apache.org/licenses/LICENSE-2.0
  6 #
  7 # Unless required by applicable law or agreed to in writing, software
  8 # distributed under the License is distributed on an "AS IS" BASIS,
  9 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  10 # See the License for the specific language governing permissions and
  11 # limitations under the License.
  12 
  13 from packaging.utils import canonicalize_name
  14 from pyramid.httpexceptions import HTTPSeeOther
  15 
  16 from warehouse.packaging.models import (
  17     Project, Release, Dependency, File, Role, JournalEntry, release_classifiers
  18 )
  19 
  20 
  21 def confirm_project(project, request):
  22     confirm = request.POST.get("confirm")
  23     project_name = project.normalized_name
  24     if not confirm:
  25         request.session.flash(
  26             "Must confirm the request.",
  27             queue="error",
  28         )
  29         raise HTTPSeeOther(
  30             request.route_path(
  31                 'admin.project.detail',
  32                 project_name=project_name
  33             )
  34         )
  35     if canonicalize_name(confirm) != project.normalized_name:
  36         request.session.flash(
  37             f"{confirm!r} is not the same as {project.normalized_name!r}",
  38             queue="error",
  39         )
  40         raise HTTPSeeOther(
  41             request.route_path(
  42                 'admin.project.detail',
  43                 project_name=project_name
  44             )
  45         )
  46 
  47 
  48 def remove_project(project, request):
  49     # TODO: We don't actually delete files from the data store. We should add
  50     #       some kind of garbage collection at some point.
  51 
  52     request.db.add(
  53         JournalEntry(
  54             name=project.name,
  55             action="remove",
  56             submitted_by=request.user,
  57             submitted_from=request.remote_addr,
  58         )
  59     )
  60     request.db.query(Role).filter(Role.project == project).delete()
  61     request.db.query(File).filter(File.name == project.name).delete()
  62     (request.db.query(Dependency).filter(Dependency.name == project.name)
  63                .delete())
  64     (request.db.execute(release_classifiers.delete()
  65                         .where(release_classifiers.c.name ==
  66                                project.name)))
  67     request.db.query(Release).filter(Release.name == project.name).delete()
  68     request.db.query(Project).filter(Project.name == project.name).delete()
  69 
  70     request.session.flash(
  71         f"Successfully deleted the project {project.name!r}.",
  72         queue="success",
  73     )
  74
  ```
  --- END FILES ---
  
  Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.
  
  Here is an example:
  
  ```diff
  diff --git a/examples/server_async.py b/examples/server_async.py
  --- a/examples/server_async.py
  +++ b/examples/server_async.py
  @@ -313,4 +313,4 @@
   
   
   if __name__ == "__main__":
  -    asyncio.run(run_async_server("."), debug=True)
  +    asyncio.run(run_async_server(), debug=True)
  diff --git a/examples/server_sync.py b/examples/server_sync.py
  --- a/examples/server_sync.py
  +++ b/examples/server_sync.py
  @@ -313,5 +313,5 @@
   
   
   if __name__ == "__main__":
  -    server = run_sync_server(".")
  +    server = run_sync_server()
       server.shutdown()
  
  ```
  
golden_diff: diff --git a/warehouse/admin/utils.py b/warehouse/admin/utils.py
  --- a/warehouse/admin/utils.py
  +++ b/warehouse/admin/utils.py
  @@ -64,8 +64,22 @@
       (request.db.execute(release_classifiers.delete()
                           .where(release_classifiers.c.name ==
                                  project.name)))
  -    request.db.query(Release).filter(Release.name == project.name).delete()
  -    request.db.query(Project).filter(Project.name == project.name).delete()
  +
  +    # Load the following objects into the session and individually delete them
  +    # so they are included in `session.deleted` and their cache keys are purged
  +
  +    # Delete releases first, otherwise they will get cascade-deleted by the
  +    # project deletion and won't be purged
  +    for release in (
  +            request.db.query(Release)
  +            .filter(Release.name == project.name)
  +            .all()):
  +        request.db.delete(release)
  +
  +    # Finally, delete the project
  +    request.db.delete(
  +        request.db.query(Project).filter(Project.name == project.name).one()
  +    )
   
       request.session.flash(
           f"Successfully deleted the project {project.name!r}.",
  
verification_info: {"golden_diff": "diff --git a/warehouse/admin/utils.py b/warehouse/admin/utils.py\n--- a/warehouse/admin/utils.py\n+++ b/warehouse/admin/utils.py\n@@ -64,8 +64,22 @@\n     (request.db.execute(release_classifiers.delete()\n                         .where(release_classifiers.c.name ==\n                                project.name)))\n-    request.db.query(Release).filter(Release.name == project.name).delete()\n-    request.db.query(Project).filter(Project.name == project.name).delete()\n+\n+    # Load the following objects into the session and individually delete them\n+    # so they are included in `session.deleted` and their cache keys are purged\n+\n+    # Delete releases first, otherwise they will get cascade-deleted by the\n+    # project deletion and won't be purged\n+    for release in (\n+            request.db.query(Release)\n+            .filter(Release.name == project.name)\n+            .all()):\n+        request.db.delete(release)\n+\n+    # Finally, delete the project\n+    request.db.delete(\n+        request.db.query(Project).filter(Project.name == project.name).one()\n+    )\n \n     request.session.flash(\n         f\"Successfully deleted the project {project.name!r}.\",\n", "issue": "Blacklisting project does not purge the cache\n\n", "before_files": [{"content": "# Licensed under the Apache License, Version 2.0 (the \"License\");\n# you may not use this file except in compliance with the License.\n# You may obtain a copy of the License at\n#\n# http://www.apache.org/licenses/LICENSE-2.0\n#\n# Unless required by applicable law or agreed to in writing, software\n# distributed under the License is distributed on an \"AS IS\" BASIS,\n# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n# See the License for the specific language governing permissions and\n# limitations under the License.\n\nfrom packaging.utils import canonicalize_name\nfrom pyramid.httpexceptions import HTTPSeeOther\n\nfrom warehouse.packaging.models import (\n    Project, Release, Dependency, File, Role, JournalEntry, release_classifiers\n)\n\n\ndef confirm_project(project, request):\n    confirm = request.POST.get(\"confirm\")\n    project_name = project.normalized_name\n    if not confirm:\n        request.session.flash(\n            \"Must confirm the request.\",\n            queue=\"error\",\n        )\n        raise HTTPSeeOther(\n            request.route_path(\n                'admin.project.detail',\n                project_name=project_name\n            )\n        )\n    if canonicalize_name(confirm) != project.normalized_name:\n        request.session.flash(\n            f\"{confirm!r} is not the same as {project.normalized_name!r}\",\n            queue=\"error\",\n        )\n        raise HTTPSeeOther(\n            request.route_path(\n                'admin.project.detail',\n                project_name=project_name\n            )\n        )\n\n\ndef remove_project(project, request):\n    # TODO: We don't actually delete files from the data store. We should add\n    #       some kind of garbage collection at some point.\n\n    request.db.add(\n        JournalEntry(\n            name=project.name,\n            action=\"remove\",\n            submitted_by=request.user,\n            submitted_from=request.remote_addr,\n        )\n    )\n    request.db.query(Role).filter(Role.project == project).delete()\n    request.db.query(File).filter(File.name == project.name).delete()\n    (request.db.query(Dependency).filter(Dependency.name == project.name)\n               .delete())\n    (request.db.execute(release_classifiers.delete()\n                        .where(release_classifiers.c.name ==\n                               project.name)))\n    request.db.query(Release).filter(Release.name == project.name).delete()\n    request.db.query(Project).filter(Project.name == project.name).delete()\n\n    request.session.flash(\n        f\"Successfully deleted the project {project.name!r}.\",\n        queue=\"success\",\n    )\n", "path": "warehouse/admin/utils.py"}], "after_files": [{"content": "# Licensed under the Apache License, Version 2.0 (the \"License\");\n# you may not use this file except in compliance with the License.\n# You may obtain a copy of the License at\n#\n# http://www.apache.org/licenses/LICENSE-2.0\n#\n# Unless required by applicable law or agreed to in writing, software\n# distributed under the License is distributed on an \"AS IS\" BASIS,\n# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n# See the License for the specific language governing permissions and\n# limitations under the License.\n\nfrom packaging.utils import canonicalize_name\nfrom pyramid.httpexceptions import HTTPSeeOther\n\nfrom warehouse.packaging.models import (\n    Project, Release, Dependency, File, Role, JournalEntry, release_classifiers\n)\n\n\ndef confirm_project(project, request):\n    confirm = request.POST.get(\"confirm\")\n    project_name = project.normalized_name\n    if not confirm:\n        request.session.flash(\n            \"Must confirm the request.\",\n            queue=\"error\",\n        )\n        raise HTTPSeeOther(\n            request.route_path(\n                'admin.project.detail',\n                project_name=project_name\n            )\n        )\n    if canonicalize_name(confirm) != project.normalized_name:\n        request.session.flash(\n            f\"{confirm!r} is not the same as {project.normalized_name!r}\",\n            queue=\"error\",\n        )\n        raise HTTPSeeOther(\n            request.route_path(\n                'admin.project.detail',\n                project_name=project_name\n            )\n        )\n\n\ndef remove_project(project, request):\n    # TODO: We don't actually delete files from the data store. We should add\n    #       some kind of garbage collection at some point.\n\n    request.db.add(\n        JournalEntry(\n            name=project.name,\n            action=\"remove\",\n            submitted_by=request.user,\n            submitted_from=request.remote_addr,\n        )\n    )\n    request.db.query(Role).filter(Role.project == project).delete()\n    request.db.query(File).filter(File.name == project.name).delete()\n    (request.db.query(Dependency).filter(Dependency.name == project.name)\n               .delete())\n    (request.db.execute(release_classifiers.delete()\n                        .where(release_classifiers.c.name ==\n                               project.name)))\n\n    # Load the following objects into the session and individually delete them\n    # so they are included in `session.deleted` and their cache keys are purged\n\n    # Delete releases first, otherwise they will get cascade-deleted by the\n    # project deletion and won't be purged\n    for release in (\n            request.db.query(Release)\n            .filter(Release.name == project.name)\n            .all()):\n        request.db.delete(release)\n\n    # Finally, delete the project\n    request.db.delete(\n        request.db.query(Project).filter(Project.name == project.name).one()\n    )\n\n    request.session.flash(\n        f\"Successfully deleted the project {project.name!r}.\",\n        queue=\"success\",\n    )\n", "path": "warehouse/admin/utils.py"}]}