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Groups > comp.lang.python > #37061
| From | Vito De Tullio <vito.detullio@gmail.com> |
|---|---|
| Subject | Re: Safely add a key to a dict only if it does not already exist? |
| Date | 2013-01-19 08:27 +0100 |
| References | <50fa1bf1$0$30003$c3e8da3$5496439d@news.astraweb.com> <CAMZYqRT9SkzNh2BDC1cccCGsbjHw_jWJ-m+DTuc8NwtfAsmRpg@mail.gmail.com> |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.672.1358580589.2939.python-list@python.org> (permalink) |
Chris Rebert wrote: >> How can I add a key in a thread-safe manner? > I'm not entirely sure, but have you investigated dict.setdefault() ? but how setdefault makes sense in this context? It's used to set a default value when you try to retrieve an element from the dict, not when you try to set a new one ... -- ZeD
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Safely add a key to a dict only if it does not already exist? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-01-19 04:07 +0000
Re: Safely add a key to a dict only if it does not already exist? Chris Rebert <clp2@rebertia.com> - 2013-01-18 20:15 -0800
Re: Safely add a key to a dict only if it does not already exist? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-01-19 10:31 +0000
Re: Safely add a key to a dict only if it does not already exist? Lie Ryan <lie.1296@gmail.com> - 2013-01-19 16:00 +1100
Re: Safely add a key to a dict only if it does not already exist? Vito De Tullio <vito.detullio@gmail.com> - 2013-01-19 08:25 +0100
Re: Safely add a key to a dict only if it does not already exist? Vito De Tullio <vito.detullio@gmail.com> - 2013-01-19 08:27 +0100
Re: Safely add a key to a dict only if it does not already exist? Mitya Sirenef <msirenef@lightbird.net> - 2013-01-19 02:35 -0500
Re: Safely add a key to a dict only if it does not already exist? Peter Otten <__peter__@web.de> - 2013-01-19 09:02 +0100
Re: Safely add a key to a dict only if it does not already exist? Vito De Tullio <vito.detullio@gmail.com> - 2013-01-19 09:16 +0100
Re: Safely add a key to a dict only if it does not already exist? Mitya Sirenef <msirenef@lightbird.net> - 2013-01-19 03:18 -0500
Re: Safely add a key to a dict only if it does not already exist? Vito De Tullio <vito.detullio@gmail.com> - 2013-01-19 09:19 +0100
Re: Safely add a key to a dict only if it does not already exist? Chris Angelico <rosuav@gmail.com> - 2013-01-19 19:23 +1100
Re: Safely add a key to a dict only if it does not already exist? Roy Smith <roy@panix.com> - 2013-01-19 08:04 -0500
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