Upgrade anyio to 3.1 for all py versions (#521)

Author: Mariko Wakabayashi

jupyter_server/services/contents/filecheckpoints.py

@@ -14,12 +14,7 @@
 )
 from .fileio import AsyncFileManagerMixin, FileManagerMixin
 
-try:
-    from anyio.to_thread import run_sync
-except ImportError:
-    # fallback on anyio v2 for python version < 3.7
-    from anyio import run_sync_in_worker_thread as run_sync
-
+from anyio.to_thread import run_sync
 from jupyter_core.utils import ensure_dir_exists
 from traitlets import Unicode
 

jupyter_server/services/contents/fileio.py

@@ -12,12 +12,7 @@
 import os
 import shutil
 
-try:
-    from anyio.to_thread import run_sync
-except ImportError:
-    # fallback on anyio v2 for python version < 3.7
-    from anyio import run_sync_in_worker_thread as run_sync
-    
+from anyio.to_thread import run_sync
 from tornado.web import HTTPError
 
 from jupyter_server.utils import (

jupyter_server/services/contents/filemanager.py

@@ -12,12 +12,7 @@
 import mimetypes
 import nbformat
 
-try:
-    from anyio.to_thread import run_sync
-except ImportError:
-    # fallback on anyio v2 for python version < 3.7
-    from anyio import run_sync_in_worker_thread as run_sync
-    
+from anyio.to_thread import run_sync
 from send2trash import send2trash
 from tornado import web
 

jupyter_server/services/contents/largefilemanager.py

@@ -1,9 +1,4 @@
-try:
-    from anyio.to_thread import run_sync
-except ImportError:
-    # fallback on anyio v2 for python version < 3.7
-    from anyio import run_sync_in_worker_thread as run_sync
-    
+from anyio.to_thread import run_sync
 from tornado import web
 import base64
 import os, io

jupyter_server/services/nbconvert/handlers.py

@@ -1,11 +1,6 @@
 import json
 
-try:
-    from anyio.to_thread import run_sync
-except ImportError:
-    # fallback on anyio v2 for python version < 3.7
-    from anyio import run_sync_in_worker_thread as run_sync
-
+from anyio.to_thread import run_sync
 from tornado import web
 
 from ...base.handlers import APIHandler

setup.cfg

@@ -40,8 +40,7 @@ install_requires =
     Send2Trash
     terminado>=0.8.3
     prometheus_client
-    anyio>=2.0.2,<3 ; python_version < '3.7'
-    anyio>=3.0.1,<4 ; python_version >= '3.7'
+    anyio>=3.1.0,<4
     websocket-client
 
 [options.extras_require]