Core mojo API for python.

mojo/python/BUILD.gn

+# Copyright 2014 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import("//third_party/cython/rules.gni")
+
+group("python") {
+  deps = [
+    ":embedder",
+  ]
+}
+
+group("tests") {
+  deps = [
+    "//mojo/python/tests",
+  ]
+}
+python_binary_module("embedder") {
+  python_base_module = "mojo"
+  sources = [
+    "system/mojo/embedder.pyx",
+  ]
+  deps = [
+    "//mojo/system",
+  ]
+  datadeps = [
+    "//mojo/public/python:system",
+  ]
+}