Add spacing to Field for better readability

Author: fellajimed

Lib/dataclasses.py

@@ -304,16 +304,16 @@ def __init__(self, default, default_factory, init, repr, hash, compare,
     @recursive_repr()
     def __repr__(self):
         return ('Field('
-                f'name={self.name!r},'
-                f'type={self.type!r},'
-                f'default={self.default!r},'
-                f'default_factory={self.default_factory!r},'
-                f'init={self.init!r},'
-                f'repr={self.repr!r},'
-                f'hash={self.hash!r},'
-                f'compare={self.compare!r},'
-                f'metadata={self.metadata!r},'
-                f'kw_only={self.kw_only!r},'
+                f'name={self.name!r}, '
+                f'type={self.type!r}, '
+                f'default={self.default!r}, '
+                f'default_factory={self.default_factory!r}, '
+                f'init={self.init!r}, '
+                f'repr={self.repr!r}, '
+                f'hash={self.hash!r}, '
+                f'compare={self.compare!r}, '
+                f'metadata={self.metadata!r}, '
+                f'kw_only={self.kw_only!r}, '
                 f'_field_type={self._field_type}'
                 ')')