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Generators - Maintaining Local Frame State
The Python literature mostly discusses generators in the context of iterators. This masks the subtle truth:
- Generators are objects which maintain the local frame
- These are not coroutines as there is no true stack frame maintained
- But, you can invoke other generators from a generator getting you closer to where you might want to get
Python Extensions such as “Greenlets” support true coroutines
Twisted supports callbacks to “yield” using the “send” operator through the “inlineCallback” mechanism
- Twisted folks view this as syntatic sugar. That Tarbox guy thinks they're a bigger deal