[issue18078] threading.Condition to allow notify on a specific waiter

[João Bernardo]

João Bernardo added the comment:

> But it might be nice to be able to wait on multiple conditions at 
> once, assuming they are associated with the same lock.  Maybe we could 
> have a static method

This could solve the waiting problem for the "thread", but also may keep the other Condition objs waiting -- and that may not be problem because I'm already using .notify_all()

Probably this function have more use cases than my original idea, but is it simple to wait on several locks?

It could be in the form:

Condition.wait_for_any(cond_to_pred: dict|list, timeout=None) -> condition

For cases when there's no need for a predicate function.

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<http://bugs.python.org/issue18078>
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