Path: csiph.com!fu-berlin.de!uni-berlin.de!not-for-mail From: Ian Kelly Newsgroups: comp.lang.python Subject: Re: Set Operations on Dicts Date: Tue, 9 Feb 2016 08:14:15 -0700 Lines: 11 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-Trace: news.uni-berlin.de 6IhaU1QJD1gAD6NKZFHRUAsqcjYs5PMitvRW1Wqg1h6w== Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.032 X-Spam-Evidence: '*H*': 0.94; '*S*': 0.00; 'dict': 0.09; 'python': 0.10; 'applies': 0.15; '2016': 0.16; 'received:io': 0.16; 'received:psf.io': 0.16; 'set-like': 0.16; 'substitute': 0.16; 'wrote:': 0.16; 'am,': 0.23; 'feb': 0.23; 'header:In-Reply-To:1': 0.24; 'message-id:@mail.gmail.com': 0.27; 'expose': 0.29; 'received:209.85.213.174': 0.29; 'seemingly': 0.29; 'tue,': 0.34; 'received:google.com': 0.35; 'but': 0.36; 'received:209.85': 0.36; 'to:addr:python-list': 0.36; 'subject:: ': 0.37; 'received:209.85.213': 0.37; 'received:209': 0.38; 'does': 0.39; 'to:addr:python.org': 0.40; '2.7.': 0.84; 'to:name:python': 0.84; 'subject:Set': 0.91 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :content-type; bh=MFY2aZSF9jqcziv8US7w00/YLYZ112kK5UPAWimqvgo=; b=YgzhGH8txTJCtbRNZjaZGQysGph2zMtTKVXr64xdYb0GXwSJr+TAoTkPihUypKAwlX S8Of/ej3M6oO0nVVvazKA/75WfYHRywEn4mIXT66/MdLaEaD+irCEb423FVdugiuf4WQ jEfdAouYv00/rCNotcOVqF3m3dJflBHo36RUxosFaLLu6zcta8JB8x67mpz6sWE3lN+4 sXqHPHCqH7XTfpTo/qxcZqC/PL8ZoIHjUTKz5M+2GxB4yS7zxJ815OK4CI48iDMjjVQp vGsKyJwi31/DN+YyQp8h0q3f/YVH9ZSqt8Y3k7fnjAYoo+lMxxIuluTU5f3Et/SIdzq1 MH3w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:content-type; bh=MFY2aZSF9jqcziv8US7w00/YLYZ112kK5UPAWimqvgo=; b=Sro9dB320HtKeQen9EkTi/Hb51PEUZj2E1RWrRcm0c6rGegaO5yKX97gE8SuhA/F2K XtnzAs6qIVL8jsKx+2md3ss5/Pd6ia7UdIh+7z3wzrdy+g7G07de9MwXFoxIbZaxTjnH zqe1j6mDmP4/rsODS+HiZrGawsX0nNQvvmHGU/r6cjkR9bAxTVy4riXIk8Rm6XB+kgdN xwPLA5F4livQhP9wK6h7jWubOyvZMueQgMOXpTSXbv1egOJN/WcJ/NvbkrMYo13L900H pNkqZAnX5KQSeiE32BAXqPUxUmgDPaXkctdnPj1ek72zhXaiIafgZlsoxDnHWIwRrKEb xhfA== X-Gm-Message-State: AG10YOSwPdJwJUsTdLONzVIjopFTmr1xz/KNp5ciceFs173MaFtyH0PCXS7X9YgJ4HbL7Ixky5imM+X5JQQt0Q== X-Received: by 10.50.61.177 with SMTP id q17mr4822666igr.68.1455030895122; Tue, 09 Feb 2016 07:14:55 -0800 (PST) In-Reply-To: X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.21rc2 Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Xref: csiph.com comp.lang.python:102728 On Tue, Feb 9, 2016 at 12:21 AM, Grobu wrote: > On 08/02/16 17:12, Ian Kelly wrote: > >> dict does already expose set-like views. How about: >> >> {k: d[k] for k in d.keys() & s} # d & s >> {k: d[k] for k in d.keys() - s} # d - s >> > Interesting. But seemingly only applies to Python 3. Substitute d.viewkeys() for d.keys() in Python 2.7.