diff --git a/Formula/black.rb b/Formula/black.rb
new file mode 100644
index 00000000000000..dec7fd1687eb01
--- /dev/null
+++ b/Formula/black.rb
@@ -0,0 +1,44 @@
+class Black < Formula
+  include Language::Python::Virtualenv
+
+  desc "Python code formatter"
+  homepage "https://black.readthedocs.io/en/stable/"
+  url "https://files.pythonhosted.org/packages/2d/43/64205493cfb4c8e1720208d73502a121ace2a195cd4d1d49bd7470e4fd92/black-18.6b4.tar.gz"
+  sha256 "22158b89c1a6b4eb333a1e65e791a3f8b998cf3b11ae094adb2570f31f769a44"
+
+  depends_on "python"
+
+  resource "appdirs" do
+    url "https://files.pythonhosted.org/packages/48/69/d87c60746b393309ca30761f8e2b49473d43450b150cb08f3c6df5c11be5/appdirs-1.4.3.tar.gz"
+    sha256 "9e5896d1372858f8dd3344faf4e5014d21849c756c8d5701f78f8a103b372d92"
+  end
+
+  resource "attrs" do
+    url "https://files.pythonhosted.org/packages/e4/ac/a04671e118b57bee87dabca1e0f2d3bda816b7a551036012d0ca24190e71/attrs-18.1.0.tar.gz"
+    sha256 "e0d0eb91441a3b53dab4d9b743eafc1ac44476296a2053b6ca3af0b139faf87b"
+  end
+
+  resource "click" do
+    url "https://files.pythonhosted.org/packages/95/d9/c3336b6b5711c3ab9d1d3a80f1a3e2afeb9d8c02a7166462f6cc96570897/click-6.7.tar.gz"
+    sha256 "f15516df478d5a56180fbf80e68f206010e6d160fc39fa508b65e035fd75130b"
+  end
+
+  resource "toml" do
+    url "https://files.pythonhosted.org/packages/f5/f9/044110c267e6408013b85166a7cfcd352cf85275aa8ce700aa5c0eb407ba/toml-0.9.4.tar.gz"
+    sha256 "8e86bd6ce8cc11b9620cb637466453d94f5d57ad86f17e98a98d1f73e3baab2d"
+  end
+
+  def install
+    virtualenv_install_with_resources
+  end
+
+  test do
+    ENV["LC_ALL"] = "en_US.UTF-8"
+    (testpath/"black_test.py").write <<~EOS
+      print(
+      'It works!')
+    EOS
+    system bin/"black", "black_test.py"
+    assert_equal "print(\"It works!\")\n", (testpath/"black_test.py").read
+  end
+end