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Groups > comp.lang.python > #41640
| Newsgroups | comp.lang.python |
|---|---|
| Date | 2013-03-21 02:34 -0700 |
| References | <263e910f-4cc5-4b50-bf8d-c207622170b5@googlegroups.com> |
| Message-ID | <7f0df9d6-6370-478a-85fb-6e6f2ed869c5@googlegroups.com> (permalink) |
| Subject | Re: free and nonlocal variables |
| From | 88888 Dihedral <dihedral88888@googlemail.com> |
bartolom...@gmail.com於 2013年3月21日星期四UTC+8下午4時52分17秒寫道： > In Python 3, "free variable" and "nonlocal variable" are synonym terms? Or is there a difference, like "a free variable is a variable that is not a local variable, then nonlocal variables and global variables are both free variables"? > > > > Thanking you in advance, > > Bartolomé Sintes In python the interpreter has to check 4 levels of dictionaries in the run time to perform an action. The for levels are: 1. object instance level 2. class level 3. local function level 4. global level. Objects created at level 1,2,3 can be returned to some other object in the run time. Thus a GC is available to save the trouble of tracking everything for the programmer in a complex system.
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free and nonlocal variables bartolome.sintes@gmail.com - 2013-03-21 01:52 -0700
Re: free and nonlocal variables 88888 Dihedral <dihedral88888@googlemail.com> - 2013-03-21 02:34 -0700
Re: free and nonlocal variables Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-03-21 11:00 +0000
Re: free and nonlocal variables Terry Reedy <tjreedy@udel.edu> - 2013-03-21 07:55 -0400
Re: free and nonlocal variables Nobody <nobody@nowhere.com> - 2013-03-21 19:05 +0000
Re: free and nonlocal variables Jussi Piitulainen <jpiitula@ling.helsinki.fi> - 2013-03-21 22:36 +0200
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