Hi, when load a module "mymodule.py" with importlib.machinery.SourceFileLoader a bytecode file is created as mymodule.cpython-33.pyc. If I load a module "mymodule.ext.py" the same way the same bytecode file is created as mymodule.cpython-33.pyc. Is there any way I could tell python to generate the bycode file as mymodule.ext.cpython-33.pyc? Regards, Fabian