QOL fixes (#141)

- Add missing type annotations
- Various style improvements
- Use constants more consistently
- enforce black on benchmark code

benchmarks/benchmarks.py

@@ -8,9 +8,9 @@ class TestMessage(betterproto.Message):
     bar: str = betterproto.string_field(1)
     baz: float = betterproto.float_field(2)
 
+
 class BenchMessage:
-    """Test creation and usage a proto message.
-    """
+    """Test creation and usage a proto message."""
 
     def setup(self):
         self.cls = TestMessage
@@ -18,8 +18,8 @@ class BenchMessage:
         self.instance_filled = TestMessage(0, "test", 0.0)
 
     def time_overhead(self):
-        """Overhead in class definition.
-        """
+        """Overhead in class definition."""
+
         @dataclass
         class Message(betterproto.Message):
             foo: int = betterproto.uint32_field(0)
@@ -27,29 +27,25 @@ class BenchMessage:
             baz: float = betterproto.float_field(2)
 
     def time_instantiation(self):
-        """Time instantiation
-        """
+        """Time instantiation"""
         self.cls()
 
     def time_attribute_access(self):
-        """Time to access an attribute
-        """
+        """Time to access an attribute"""
         self.instance.foo
         self.instance.bar
         self.instance.baz
-    
+
     def time_init_with_values(self):
-        """Time to set an attribute
-        """
+        """Time to set an attribute"""
         self.cls(0, "test", 0.0)
 
     def time_attribute_setting(self):
-        """Time to set attributes
-        """
+        """Time to set attributes"""
         self.instance.foo = 0
         self.instance.bar = "test"
         self.instance.baz = 0.0
-    
+
     def time_serialize(self):
         """Time serializing a message to wire."""
         bytes(self.instance_filled)
@@ -58,6 +54,6 @@ class BenchMessage:
 class MemSuite:
     def setup(self):
         self.cls = TestMessage
-    
+
     def mem_instance(self):
         return self.cls()