new package/py-blessed (#11656)

* new package/py-blessed

* make flake8 happy

* fix docstring

* tab to spaces

* Update var/spack/repos/builtin/packages/py-blessed/package.py

specify dependency version.

Co-Authored-By: Adam J. Stewart <ajstewart426@gmail.com>

* Update var/spack/repos/builtin/packages/py-blessed/package.py

specify dependency version

Co-Authored-By: Adam J. Stewart <ajstewart426@gmail.com>

* add setuptools as depedency

var/spack/repos/builtin/packages/py-blessed/package.py

+# Copyright 2013-2019 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+
+from spack import *
+
+
+class PyBlessed(PythonPackage):
+    """Blessed is a thin, practical wrapper around terminal capabilities in
+    Python."""
+
+    homepage = "https://github.com/jquast/blessed"
+    url      = "https://pypi.io/packages/source/b/blessed/blessed-1.15.0.tar.gz"
+
+    version('1.15.0', sha256='777b0b6b5ce51f3832e498c22bc6a093b6b5f99148c7cbf866d26e2dec51ef21')
+
+    depends_on('py-setuptools', type='build')
+    depends_on('py-wcwidth@0.1.4:', type=('build', 'run'))
+    depends_on('py-six@1.9.0:', type=('build', 'run'))