def load_installed_version(self):
        installed_packages = get_installed_pypackages()
        if self.package in installed_packages:
            self.version = "=={}".format(
                installed_packages[self.package].version)
def add_item(self, item_value=None, index=None):
    if item_value is None:
      item_value = self._new_item_default_value