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 send(self, command):
        if self._bufferedCommands is None:
            self._bufferedCommands = command
        else:
            self._bufferedCommands += "\n" + command