def get_command_packages(self):
        """Return a list of packages from which commands are loaded."""
        pkgs = self.command_packages
        if not isinstance(pkgs, list):
            if pkgs is None:
                pkgs = ''
            pkgs = [pkg.strip() for pkg in pkgs.split(',') if pkg != '']
            if pkgs not in "distutils.command":
                pkgs.insert(0, "distutils.command")
            self.command_packages = pkgs
        return pkgs
dataset/ETHPy150Open azoft-dev-team/imagrium/env/Lib/distutils/dist.py/Distribution.get_command_packages/swapped operands of `not in`