Neal D. Becker wrote:
> Only one problem. Is there any way to access the state of a generator
> externally? In other words, the generator saves all it's local variables.
> Can an unrelated object then query the values of those variables? (In
You get read access with generator.gi_frame.f_locals and can mess (as
always) with mutable variables, but not rebind the local variables:
>>> def gen():
... a = 2
... b = [3]
... yield a*b[0]
... yield a*b[0]
...
>>> g = gen()
>>> g.gi_frame.f_locals
{}
>>> g.next()
6
>>> g.gi_frame.f_locals
{'a': 2, 'b': [3]}
>>> g.gi_frame.f_locals["a"] = 137 # has no effect
>>> g.gi_frame.f_locals["b"][0] = 42
>>> g.next()
84
>>> g.gi_frame.f_locals
{'a': 2, 'b': [42]}
Peter
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