On 27 March 2018 at 19:43, Ethan Furman <et...@stoneleaf.us> wrote: > On 03/27/2018 11:12 AM, Ivan Levkivskyi wrote: > >> On 27 March 2018 at 18:19, Guido van Rossum wrote: >> > > Hm, so maybe we shouldn't touch lambda, but we can at least fix the scope >>> issues for comprehensions and genexprs. >>> >> >> Removing the implicit function scope in comprehensions is something I >> wanted for long time. >> It would not only "fix" the scoping, but will also fix the yield inside >> comprehensions. >> > > Can we do it without leaking names? > > If you mean this
[i for i in range(5)] i # NameError then yes, this is possible. Serhiy outlined the implementation few moths ago. The rough idea is to use automatic re-naming. The only problem with this is that if someone will step into debugger one will see a name like <comp>.0.i instead of i. But this can be solved in the debuggers. -- Ivan
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