Bump pyupgrade target to 3.10+

... according to the versions currently supported.

Change-Id: I13138e4324c4f5fdb7cc5b0f963f417dfeb6f246
Signed-off-by: Takashi Kajinami <kajinamit@oss.nttdata.com>

.pre-commit-config.yaml

@@ -26,4 +26,4 @@ repos:
     rev: v3.20.0
     hooks:
       - id: pyupgrade
-        args: [--py3-only]
+        args: [--py310-plus]

oslo_privsep/comm.py

@@ -92,7 +92,7 @@ class Deserializer:
                     if not buf:
                         raise
                     self.unpacker.feed(buf)
-                except socket.timeout:
+                except TimeoutError:
                     pass
 
 
@@ -193,7 +193,7 @@ class ClientChannel:
 
                 reply = future.result()
             except Exception:
-                LOG.warning("Unexpected error: {}".format(sys.exc_info()[0]))
+                LOG.warning(f"Unexpected error: {sys.exc_info()[0]}")
                 raise
             finally:
                 del self.outstanding_msgs[myid]

oslo_privsep/daemon.py

@@ -223,7 +223,7 @@ class _ClientChannel(comm.ClientChannel):
             exc_type = importutils.import_class(result[1])
             if self.log_traceback:
                 try:
-                    msg = 'Privsep daemon traceback: {}'.format(result[3])
+                    msg = f'Privsep daemon traceback: {result[3]}'
                     self.log.warning(msg)
                 except IndexError:
                     pass
@@ -493,7 +493,7 @@ class Daemon:
                 'privsep: Exception during request[%(msgid)s]: '
                 '%(err)s', {'msgid': msgid, 'err': e}, exc_info=True)
             cls = e.__class__
-            cls_name = '{}.{}'.format(cls.__module__, cls.__name__)
+            cls_name = f'{cls.__module__}.{cls.__name__}'
             return (comm.Message.ERR.value, cls_name, e.args,
                     traceback.format_exc())
 
@@ -522,7 +522,7 @@ class Daemon:
                     'privsep: Exception during request[%(msgid)s]: '
                     '%(err)s', {'msgid': msgid, 'err': e}, exc_info=True)
                 cls = e.__class__
-                cls_name = '{}.{}'.format(cls.__module__, cls.__name__)
+                cls_name = f'{cls.__module__}.{cls.__name__}'
                 reply = (comm.Message.ERR.value, cls_name, e.args,
                          traceback.format_exc())
                 try:

oslo_privsep/priv_context.py

@@ -257,7 +257,7 @@ class PrivContext:
 
     def _wrap(self, func, *args, _wrap_timeout=None, **kwargs):
         if self.client_mode:
-            name = '{}.{}'.format(func.__module__, func.__name__)
+            name = f'{func.__module__}.{func.__name__}'
             if self.channel is not None and not self.channel.running:
                 LOG.warning("RESTARTING PrivContext for %s", name)
                 self.stop()

oslo_privsep/tests/test_priv_context.py

@@ -55,7 +55,7 @@ class CustomError(Exception):
         self.msg = msg
 
     def __str__(self):
-        return 'Code {}: {}'.format(self.code, self.msg)
+        return f'Code {self.code}: {self.msg}'
 
 
 @testctx.context.entrypoint