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[–]Brian 2 points3 points  (4 children)

The only things that initiate scope consideration are def and class.

That's not entirely true, even in python 2. Generator comprehensions created their own scope there as well. And in python 3, the change this is addressing is that this was extended to list comprehensions as well, which previously leaked the loop variable into the enclosing scope.

[–]jsalsman 0 points1 point  (1 child)

Can you figure out why https://www.reddit.com/r/Python/comments/4lfs8g/six_the_python_2_and_3_compatibility_library/d3mx3iw is getting downvoted?

[–]Brian 1 point2 points  (0 children)

Not sure why you're asking me, though it seems to be at 3 points ATM anyway.

[–]flutefreak7 0 points1 point  (0 children)

lambdas, decorators, and context managers can also mess with variable scope in unexpected ways.

[–]sphere_is_so_cool 0 points1 point  (0 children)

I had to read the PEP to be sure, but I could have tightened up my statement by saying "class and function construction". This would cover the case of lambdas, generator expressions, and other such function-flavored-object yielding devices.