Example of refactoring using rope library.

tools/telemetry/third_party/rope/rope/refactor/topackage.py

Index: tools/telemetry/third_party/rope/rope/refactor/topackage.py
diff --git a/tools/telemetry/third_party/rope/rope/refactor/topackage.py b/tools/telemetry/third_party/rope/rope/refactor/topackage.py
new file mode 100644
index 0000000000000000000000000000000000000000..f36a6d528865f589ff22c80493db19d1971b1cb7
--- /dev/null
+++ b/tools/telemetry/third_party/rope/rope/refactor/topackage.py
@@ -0,0 +1,32 @@
+import rope.refactor.importutils
+from rope.base.change import ChangeSet, ChangeContents, MoveResource, \
+    CreateFolder
+
+
+class ModuleToPackage(object):
+
+    def __init__(self, project, resource):
+        self.project = project
+        self.resource = resource
+
+    def get_changes(self):
+        changes = ChangeSet('Transform <%s> module to package' %
+                            self.resource.path)
+        new_content = self._transform_relatives_to_absolute(self.resource)
+        if new_content is not None:
+            changes.add_change(ChangeContents(self.resource, new_content))
+        parent = self.resource.parent
+        name = self.resource.name[:-3]
+        changes.add_change(CreateFolder(parent, name))
+        parent_path = parent.path + '/'
+        if not parent.path:
+            parent_path = ''
+        new_path = parent_path + '%s/__init__.py' % name
+        if self.resource.project == self.project:
+            changes.add_change(MoveResource(self.resource, new_path))
+        return changes
+
+    def _transform_relatives_to_absolute(self, resource):
+        pymodule = self.project.get_pymodule(resource)
+        import_tools = rope.refactor.importutils.ImportTools(self.project)
+        return import_tools.relatives_to_absolutes(pymodule)