Add python_test_host module.

bug: 31676493
Test: created py_test modules in real folder. and ran 'mma'.
Change-Id: I22aa2fad74b11e4a31ea7a4c4a4f0ea64cd3fc94
diff --git a/python/installer.go b/python/installer.go
new file mode 100644
index 0000000..9c12f5f
--- /dev/null
+++ b/python/installer.go
@@ -0,0 +1,39 @@
+// Copyright 2017 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package python
+
+import (
+	"android/soong/android"
+)
+
+// This file handles installing python executables into their final location
+
+type pythonInstaller struct {
+	dir string
+
+	path android.OutputPath
+}
+
+func NewPythonInstaller(dir string) *pythonInstaller {
+	return &pythonInstaller{
+		dir: dir,
+	}
+}
+
+var _ installer = (*pythonInstaller)(nil)
+
+func (installer *pythonInstaller) install(ctx android.ModuleContext, file android.Path) {
+	installer.path = ctx.InstallFile(android.PathForModuleInstall(ctx, installer.dir), file)
+}