MNT: remove auto-string magic all together

Co-authored-by: Greg Lucas <greg.m.lucas@gmail.com>

Author: 2 people

lib/matplotlib/_enums.py

@@ -10,14 +10,10 @@
 they define.
 """
 
-from enum import Enum, auto
+from enum import Enum
 from matplotlib import _docstring
 
 
-class __AutoStringNameEnum(Enum):
-    """Automate the ``name = 'name'`` part of making a (str, Enum)."""
-
-
 class JoinStyle(str, Enum):
     """
     Define how the connection between two line segments is drawn.
@@ -73,12 +69,9 @@ class JoinStyle(str, Enum):
 
     """
 
-    def _generate_next_value_(name, start, count, last_values):
-        return name
-
-    miter = auto()
-    round = auto()
-    bevel = auto()
+    miter = "miter"
+    round = "round"
+    bevel = "bevel"
 
     @staticmethod
     def demo():
@@ -148,12 +141,9 @@ class CapStyle(str, Enum):
         CapStyle.demo()
 
     """
-    def _generate_next_value_(name, start, count, last_values):
-        return name
-
-    butt = auto()
-    projecting = auto()
-    round = auto()
+    butt = "butt"
+    projecting = "projecting"
+    round = "round"
 
     @staticmethod
     def demo():

lib/matplotlib/_enums.pyi

@@ -3,16 +3,17 @@ from enum import Enum
 
 
 class JoinStyle(str, Enum):
-    miter = cast(str, ...)
-    round = cast(str, ...)
-    bevel = cast(str, ...)
+    miter = "miter"
+    round = "round"
+    bevel = "bevel"
     @staticmethod
     def demo() -> None: ...
 
 
 class CapStyle(str, Enum):
-    butt = cast(str, ...)
-    projecting = cast(str, ...)
-    round = cast(str, ...)
+    butt = "butt"
+    projecting = "projecting"
+    round = "round"
+
     @staticmethod
     def demo() -> None: ...