Function ready_to_import

Lib/test/support/import_helper.py:306–325

(name=None, source="")

@contextlib.contextmanager
def ready_to_import(name=None, source=""):
    from test.support import script_helper

    # 1. Sets up a temporary directory and removes it afterwards
    # 2. Creates the module file
    # 3. Temporarily clears the module from sys.modules (if any)
    # 4. Reverts or removes the module when cleaning up
    name = name or "spam"
    with temp_dir() as tempdir:
        path = script_helper.make_script(tempdir, name, source)
        old_module = sys.modules.pop(name, None)
        try:
            sys.path.insert(0, tempdir)
            yield name, path
        finally:
            sys.path.remove(tempdir)
            if old_module is not None:
                sys.modules[name] = old_module
            else:
                sys.modules.pop(name, None)


def ensure_lazy_imports(imported_module, modules_to_block):