python Rules

## py_library

py_library()

See the Bazel core py_library documentation. [available here]( https://docs.bazel.build/versions/master/be/python.html#py_library). ## py_binary

py_binary()

See the Bazel core py_binary documentation. [available here]( https://docs.bazel.build/versions/master/be/python.html#py_binary). ## py_test

py_test()

See the Bazel core py_test documentation. [available here]( https://docs.bazel.build/versions/master/be/python.html#py_test).