On Friday, June 13, 2014 8:07:45 AM UTC+2, Marko Rauhamaa wrote:
>
> The documentation is a bit vague about it:
>
> If only globals is provided, it must be a dictionary, which will be
> used for both the global and the local variables. If globals and
> locals are given, they are used for the global and local variables,
> respectively. If provided, locals can be any mapping object.
Interesting. This paragraph explicitly states "locals can be any mapping
object," but that seems to be false:
class Namespace(dict):
def __getitem__(self, key):
print("getitem", key)
def __setitem__(self, key, value):
print("setitem", key, value)
def fun():
x # should call locals.__getitem__
y = 1 # should call locals.__setitem__
exec(fun.__code__, {}, Namespace())
Neither __getitem__ nor __setitem__ seem to be called on the local variables.
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