Function _get_main_module_details

Lib/runpy.py:231–247

(error=ImportError)

        return _run_code(code, {}, init_globals, run_name, mod_spec)

def _get_main_module_details(error=ImportError):
    # Helper that gives a nicer error message when attempting to
    # execute a zipfile or directory by invoking __main__.py
    # Also moves the standard __main__ out of the way so that the
    # preexisting __loader__ entry doesn't cause issues
    main_name = "__main__"
    saved_main = sys.modules[main_name]
    del sys.modules[main_name]
    try:
        return _get_module_details(main_name)
    except ImportError as exc:
        if main_name in str(exc):
            raise error("can't find %r module in %r" %
                              (main_name, sys.path[0])) from exc
        raise
    finally:
        sys.modules[main_name] = saved_main


def _get_code_from_file(fname):