Is there an Python function equivalent for Java's Runnable? (Multiple Lines)

Question

I'm converting some Java examples to Python and I've seen direct function callers in these examples. Well, there's no problem, because I'm using lambda when it is one line (It's totally fine). However, I would like to discover if a form exists to express without creating a function like def keyword or call into a string as exec().

Example:

genericObject.onTrue(
    callWithRunnable(
        () -> { // If this were one line, I could use a lambda here (Python's Callable)
            function1();
            function2();
        },
    )
);