From adce126949623da2f310e6ea3f9f83c37972582a Mon Sep 17 00:00:00 2001
From: =?utf8?q?=C5=81ukasz=20Langa?= <lukasz@langa.pl>
Date: Mon, 28 Oct 2019 17:35:33 +0100
Subject: [PATCH] Remove unnecessary casts after pinning Mypy to >= 0.740

---
 Pipfile  |  2 +-
 black.py | 12 +++++-------
 2 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/Pipfile b/Pipfile
index 91054fd..3784810 100644
--- a/Pipfile
+++ b/Pipfile
@@ -22,7 +22,7 @@ docutils = "==0.15"  # not a direct dependency, see https://github.com/pypa/pipe
 flake8 = "*"
 flake8-bugbear = "*"
 flake8-mypy = "*"
-mypy = ">=0.620"
+mypy = ">=0.740"
 readme_renderer = "*"
 recommonmark = "*"
 Sphinx = "*"
diff --git a/black.py b/black.py
index 953d532..b3699d5 100644
--- a/black.py
+++ b/black.py
@@ -3669,14 +3669,12 @@ def _fixup_ast_constants(
     node: Union[ast.AST, ast3.AST, ast27.AST]
 ) -> Union[ast.AST, ast3.AST, ast27.AST]:
     """Map ast nodes deprecated in 3.8 to Constant."""
-    # casts are required until this is released:
-    # https://github.com/python/typeshed/pull/3142
     if isinstance(node, (ast.Str, ast3.Str, ast27.Str, ast.Bytes, ast3.Bytes)):
-        return cast(ast.AST, ast.Constant(value=node.s))
-    elif isinstance(node, (ast.Num, ast3.Num, ast27.Num)):
-        return cast(ast.AST, ast.Constant(value=node.n))
-    elif isinstance(node, (ast.NameConstant, ast3.NameConstant)):
-        return cast(ast.AST, ast.Constant(value=node.value))
+        return ast.Constant(value=node.s)
+    if isinstance(node, (ast.Num, ast3.Num, ast27.Num)):
+        return ast.Constant(value=node.n)
+    if isinstance(node, (ast.NameConstant, ast3.NameConstant)):
+        return ast.Constant(value=node.value)
     return node
 
 
-- 
2.39.2