Function _save_and_remove_modules

Lib/test/support/import_helper.py:99–105

(names)

def _save_and_remove_modules(names):
    orig_modules = {}
    prefixes = tuple(name + '.' for name in names)
    for modname in list(sys.modules):
        if modname in names or modname.startswith(prefixes):
            orig_modules[modname] = sys.modules.pop(modname)
    return orig_modules


@contextlib.contextmanager