pyupgrade

1 files changed, 6 insertions, 7 deletions

diff --git a/kombu/serialization.py b/kombu/serialization.py
index 8469a89f..ee833839 100644
--- a/kombu/serialization.py
+++ b/kombu/serialization.py
@@ -1,5 +1,4 @@
 """Serialization utilities."""
-from __future__ import absolute_import, unicode_literals
 
 import codecs
 import os
@@ -60,10 +59,10 @@ def pickle_loads(s, load=pickle_load):
 
 
 def parenthesize_alias(first, second):
-    return '%s (%s)' % (first, second) if first else second
+    return f'{first} ({second})' if first else second
 
 
-class SerializerRegistry(object):
+class SerializerRegistry:
     """The registry keeps track of serialization methods."""
 
     def __init__(self):
@@ -137,7 +136,7 @@ class SerializerRegistry(object):
             self.name_to_type.pop(name, None)
         except KeyError:
             raise SerializerNotInstalled(
-                'No encoder/decoder installed for {0}'.format(name))
+                f'No encoder/decoder installed for {name}')
 
     def _set_default_serializer(self, name):
         """Set the default serialization method used by this library.
@@ -156,7 +155,7 @@ class SerializerRegistry(object):
              self._default_encode) = self._encoders[name]
         except KeyError:
             raise SerializerNotInstalled(
-                'No encoder installed for {0}'.format(name))
+                f'No encoder installed for {name}')
 
     def dumps(self, data, serializer=None):
         """Encode data.
@@ -193,7 +192,7 @@ class SerializerRegistry(object):
             return raw_encode(data)
         if serializer and not self._encoders.get(serializer):
             raise SerializerNotInstalled(
-                'No encoder installed for {0}'.format(serializer))
+                f'No encoder installed for {serializer}')
 
         # If a raw string was sent, assume binary encoding
         # (it's likely either ASCII or a raw binary file, and a character
@@ -269,7 +268,7 @@ class SerializerRegistry(object):
 
     def _for_untrusted_content(self, ctype, why):
         return ContentDisallowed(
-            'Refusing to deserialize {0} content of type {1}'.format(
+            'Refusing to deserialize {} content of type {}'.format(
                 why,
                 parenthesize_alias(self.type_to_name.get(ctype, ctype), ctype),
             ),