Serhiy, I think this is indeed a problem. For me the biggest surprise was that `yield` inside a comprehension does not turn a surrounding function into comprehension, see also https://stackoverflow.com/questions/29334054/why-am-i-getting-different-results-when-using-a-list-comprehension-with-coroutin
In fact there is a b.p.o. issue for this https://bugs.python.org/issue10544, it is assigned to me since July, but I was focused on other things recently. My plan was to restore the Python 2 semantics while still avoiding the leak of comprehension variable to the enclosing scope (the initial reason of introducing auxiliary "_make_list" function IIUC). So that: 1) g = [(yield i) for i in range(3)] outside a function will be a SyntaxError (yield outside a function) 2) g = [(yield i) for i in range(3)] inside a function will turn that enclosing function into generator. 3) accessing i after g = [(yield i) for i in range(3)] will give a NameError: name 'i' is not defined If you have time to work on this, then I will be glad if you take care of this issue, you can re-assign it. -- Ivan
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