vector*.py: simplifica conversão para bytes

ramalho · ramalho · commit ad57a780e5a4 · 2025-10-07T08:38:41.000-03:00
diff --git a/code/11-pythonic-obj/vector2d_v0.py b/code/11-pythonic-obj/vector2d_v0.py
@@ -50,7 +50,7 @@ def __str__(self):
         return str(tuple(self))  # <5>
 
     def __bytes__(self):
-        return (bytes([ord(self.typecode)]) +  # <6>
+        return (self.typecode.encode('ascii') +  # <6>
                 bytes(array(self.typecode, self)))  # <7>
 
     def __eq__(self, other):
diff --git a/code/11-pythonic-obj/vector2d_v1.py b/code/11-pythonic-obj/vector2d_v1.py
@@ -55,7 +55,7 @@ def __str__(self):
         return str(tuple(self))
 
     def __bytes__(self):
-        return (bytes([ord(self.typecode)]) +
+        return (self.typecode.encode('ascii') +
                 bytes(array(self.typecode, self)))
 
     def __eq__(self, other):
diff --git a/code/11-pythonic-obj/vector2d_v2.py b/code/11-pythonic-obj/vector2d_v2.py
@@ -89,7 +89,7 @@ def __str__(self):
         return str(tuple(self))
 
     def __bytes__(self):
-        return (bytes([ord(self.typecode)]) +
+        return (self.typecode.encode('ascii') +
                 bytes(array(self.typecode, self)))
 
     def __eq__(self, other):
diff --git a/code/11-pythonic-obj/vector2d_v3.py b/code/11-pythonic-obj/vector2d_v3.py
@@ -72,7 +72,7 @@
     >>> v1.x = 123
     Traceback (most recent call last):
       ...
-    AttributeError: can't set attribute 'x'
+    AttributeError: property 'x' of 'Vector2d' object has no setter
 
 
 Tests of hashing:
@@ -115,7 +115,7 @@ def __str__(self):
         return str(tuple(self))
 
     def __bytes__(self):
-        return (bytes([ord(self.typecode)]) +
+        return (self.typecode.encode('ascii') +
                 bytes(array(self.typecode, self)))
 
     def __eq__(self, other):
diff --git a/code/11-pythonic-obj/vector2d_v3_prophash.py b/code/11-pythonic-obj/vector2d_v3_prophash.py
@@ -72,7 +72,7 @@
     >>> v1.x = 123
     Traceback (most recent call last):
       ...
-    AttributeError: can't set attribute 'x'
+    AttributeError: property 'x' of 'Vector2d' object has no setter
 
 # end::VECTOR2D_V3_HASH_DEMO[]
 
@@ -121,7 +121,7 @@ def __str__(self):
         return str(tuple(self))
 
     def __bytes__(self):
-        return (bytes([ord(self.typecode)]) +
+        return (self.typecode.encode('ascii') +
                 bytes(array(self.typecode, self)))
 
     def __eq__(self, other):
diff --git a/code/11-pythonic-obj/vector2d_v3_slots.py b/code/11-pythonic-obj/vector2d_v3_slots.py
@@ -72,7 +72,7 @@
     >>> v1.x = 123
     Traceback (most recent call last):
       ...
-    AttributeError: can't set attribute 'x'
+    AttributeError: property 'x' of 'Vector2d' object has no setter
 
 Tests of hashing:
 
@@ -117,7 +117,7 @@ def __str__(self):
         return str(tuple(self))
 
     def __bytes__(self):
-        return (bytes([ord(self.typecode)]) +
+        return (self.typecode.encode('ascii') +
                 bytes(array(self.typecode, self)))
 
     def __eq__(self, other):
diff --git a/code/12-seq-hacking/vector_v1.py b/code/12-seq-hacking/vector_v1.py
@@ -106,7 +106,7 @@ def __str__(self):
         return str(tuple(self))
 
     def __bytes__(self):
-        return (bytes([ord(self.typecode)]) +
+        return (self.typecode.encode('ascii') +
                 bytes(self._components))  # <5>
 
     def __eq__(self, other):
diff --git a/code/12-seq-hacking/vector_v2.py b/code/12-seq-hacking/vector_v2.py
@@ -133,7 +133,7 @@ def __str__(self):
         return str(tuple(self))
 
     def __bytes__(self):
-        return (bytes([ord(self.typecode)]) +
+        return (self.typecode.encode('ascii') +
                 bytes(self._components))
 
     def __eq__(self, other):
diff --git a/code/12-seq-hacking/vector_v3.py b/code/12-seq-hacking/vector_v3.py
@@ -176,7 +176,7 @@ def __str__(self):
         return str(tuple(self))
 
     def __bytes__(self):
-        return (bytes([ord(self.typecode)]) +
+        return (self.typecode.encode('ascii') +
                 bytes(self._components))
 
     def __eq__(self, other):
diff --git a/code/12-seq-hacking/vector_v4.py b/code/12-seq-hacking/vector_v4.py
@@ -172,7 +172,7 @@ def __str__(self):
         return str(tuple(self))
 
     def __bytes__(self):
-        return (bytes([ord(self.typecode)]) +
+        return (self.typecode.encode('ascii') +
                 bytes(self._components))
 
     def __eq__(self, other):
diff --git a/code/12-seq-hacking/vector_v5.py b/code/12-seq-hacking/vector_v5.py
@@ -215,7 +215,7 @@ def __str__(self):
         return str(tuple(self))
 
     def __bytes__(self):
-        return (bytes([ord(self.typecode)]) +
+        return (self.typecode.encode('ascii') +
                 bytes(self._components))
 
     def __eq__(self, other):
diff --git a/code/13-protocol-abc/typing/vector2d_v4.py b/code/13-protocol-abc/typing/vector2d_v4.py
@@ -72,7 +72,7 @@
     >>> v1.x = 123
     Traceback (most recent call last):
       ...
-    AttributeError: can't set attribute
+    AttributeError: property 'x' of 'Vector2d' object has no setter
 
 
 Tests of hashing:
@@ -127,7 +127,7 @@ def __str__(self):
         return str(tuple(self))
 
     def __bytes__(self):
-        return (bytes([ord(self.typecode)]) +
+        return (self.typecode.encode('ascii') +
                 bytes(array(self.typecode, self)))
 
     def __eq__(self, other):
diff --git a/code/13-protocol-abc/typing/vector2d_v5.py b/code/13-protocol-abc/typing/vector2d_v5.py
@@ -128,7 +128,7 @@ def __str__(self) -> str:
         return str(tuple(self))
 
     def __bytes__(self) -> bytes:
-        return (bytes([ord(self.typecode)]) +
+        return (self.typecode.encode('ascii') +
                 bytes(array(self.typecode, self)))
 
     def __eq__(self, other) -> bool:
diff --git a/code/16-op-overloading/vector2d_v3.py b/code/16-op-overloading/vector2d_v3.py
@@ -72,7 +72,7 @@
     >>> v1.x = 123
     Traceback (most recent call last):
       ...
-    AttributeError: can't set attribute 'x'
+    AttributeError: property 'x' of 'Vector2d' object has no setter
 
 
 Tests of hashing:
@@ -117,7 +117,7 @@ def __str__(self):
         return str(tuple(self))
 
     def __bytes__(self):
-        return (bytes([ord(self.typecode)]) +
+        return (self.typecode.encode('ascii') +
                 bytes(array(self.typecode, self)))
 
     def __eq__(self, other):
diff --git a/code/16-op-overloading/vector_v6.py b/code/16-op-overloading/vector_v6.py
@@ -270,7 +270,7 @@ def __str__(self):
         return str(tuple(self))
 
     def __bytes__(self):
-        return (bytes([ord(self.typecode)]) +
+        return (self.typecode.encode('ascii') +
                 bytes(self._components))
 
     def __eq__(self, other):
diff --git a/code/16-op-overloading/vector_v7.py b/code/16-op-overloading/vector_v7.py
@@ -322,7 +322,7 @@ def __str__(self):
         return str(tuple(self))
 
     def __bytes__(self):
-        return (bytes([ord(self.typecode)]) +
+        return (self.typecode.encode('ascii') +
                 bytes(self._components))
 
     def __eq__(self, other):
diff --git a/code/16-op-overloading/vector_v8.py b/code/16-op-overloading/vector_v8.py
@@ -323,7 +323,7 @@ def __str__(self):
         return str(tuple(self))
 
     def __bytes__(self):
-        return (bytes([ord(self.typecode)]) +
+        return (self.typecode.encode('ascii') +
                 bytes(self._components))
 
 # tag::VECTOR_V8_EQ[]
