Pep 557 What's New (GH-5371)
Add PEP 557 Data CLasses to What's New.
diff --git a/Doc/whatsnew/3.7.rst b/Doc/whatsnew/3.7.rst
index 1ece6a3..5e35534 100644
--- a/Doc/whatsnew/3.7.rst
+++ b/Doc/whatsnew/3.7.rst
@@ -311,6 +311,24 @@
PEP written and implemented by Victor Stinner
+.. _whatsnew37-pep557:
+
+PEP 557: Data Classes
+---------------------
+
+Adds a new module ``dataclasses``. It provides a class decorator
+``dataclass`` which inspects the class's variable annotations (see
+:pep:`526`) and using them, adds methods such as ``__init__``,
+``__repr__``, and ``__eq__`` to the class. It is similar to
+``typing.NamedTuple``, but also works on classes with mutable
+instances, among other features.
+
+.. seealso::
+
+ :pep:`557` -- Data Classes
+ PEP written and implemented by Eric V. Smith
+
+
New Development Mode: -X dev
----------------------------