test: use bytes format

Author: ApostolFet

Lib/test/test_bytes.py

@@ -781,23 +781,26 @@ def __int__(self):
         pi = PseudoFloat(3.1415)
 
         exceptions_params = [
-            ('%x format: an integer is required, not float', '%x', 3.14),
-            ('%X format: an integer is required, not float', '%X', 2.11),
-            ('%o format: an integer is required, not float', '%o', 1.79),
-            ('%x format: an integer is required, not PseudoFloat', '%x', pi),
-            ('%x format: an integer is required, not complex', '%x', 3j),
-            ('%X format: an integer is required, not complex', '%X', 2j),
-            ('%o format: an integer is required, not complex', '%o', 1j),
-            ('%u format: a real number is required, not complex', '%u', 3j),
-            ('%i format: a real number is required, not complex', '%i', 2j),
-            ('%d format: a real number is required, not complex', '%d', 2j),
-            (r'%c requires an int or a unicode character, not .*\.PseudoFloat',
-                '%c', pi),
+            ('%x format: an integer is required, not float', b'%x', 3.14),
+            ('%X format: an integer is required, not float', b'%X', 2.11),
+            ('%o format: an integer is required, not float', b'%o', 1.79),
+            ('%x format: an integer is required, not PseudoFloat', b'%x', pi),
+            ('%x format: an integer is required, not complex', b'%x', 3j),
+            ('%X format: an integer is required, not complex', b'%X', 2j),
+            ('%o format: an integer is required, not complex', b'%o', 1j),
+            ('%u format: a real number is required, not complex', b'%u', 3j),
+            ('%i format: a real number is required, not complex', b'%i', 2j),
+            ('%d format: a real number is required, not complex', b'%d', 2j),
+            (
+                r'%c requires an integer in range\(256\)'
+                r' or a single byte, not .*\.PseudoFloat',
+                b'%c', pi
+            ),
         ]
 
-        for msg, format_str, value in exceptions_params:
+        for msg, format_bytes, value in exceptions_params:
             with self.assertRaisesRegex(TypeError, msg):
-                operator.mod(format_str, value)
+                operator.mod(format_bytes, value)
 
     def test_imod(self):
         b = self.type2test(b'hello, %b!')