Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!newsfeed.xs4all.nl!newsfeed3a.news.xs4all.nl!xs4all!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.005 X-Spam-Evidence: '*H*': 0.99; '*S*': 0.00; '21,': 0.07; 'args': 0.07; '(self,': 0.09; '*args,': 0.09; '__init__': 0.09; 'cc:addr:python- list': 0.11; 'def': 0.12; 'jan': 0.12; '**kwargs)': 0.16; '**kwargs):': 0.16; 'charles': 0.16; 'dict': 0.16; 'from:addr:rosuav': 0.16; 'from:name:chris angelico': 0.16; 'wrote:': 0.18; 'cc:addr:python.org': 0.22; '(or': 0.24; 'cc:2**0': 0.24; 'pass': 0.26; 'header:In-Reply-To:1': 0.27; 'am,': 0.29; 'raise': 0.29; 'message-id:@mail.gmail.com': 0.30; 'class': 0.32; 'skip:_ 10': 0.34; 'created': 0.35; 'received:google.com': 0.35; 'there': 0.35; 'instances': 0.36; 'work?': 0.38; 'read': 0.60; 'simply': 0.61; 'dict()': 0.84; 'dict.': 0.84; 'itself?': 0.84; 'to:none': 0.92 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:cc :content-type; bh=yHidu5Zn5etlK6bwbVAWA6wXJrpaG0Nqeyv5CBcld6A=; b=ASt4jwpgaJc8s8wFoN1cBZ7mka5GezUNBcNyLjY4+ylCXbvCTA9ouPKFr/XadDA2Bm IBFLzYfVkeZt8dafWId1hDma9sD0P7912ab8UQQSgVIVynGIB/RqQ10g7pjxWaWf6aeO 4RwxF7WI4sEk6W4X3tF9It8JKwVarACUZUAtvIwQ3SdJQX6Z0mBHCWdlb7lKbHacO4u9 ymC8ZTge0O2ENtb0KBEV5HlT5r1Un4gZTvRaIEO48bNxhxMLqlo4kRelwGtQAWhIvtGg hx0f9uBPWSYNtLgxwZtL9+pmC5ISsqIjSH5WEDnNSUhaSd+BDGvgba/INMt16/HDfgI0 KDmw== MIME-Version: 1.0 X-Received: by 10.66.102.39 with SMTP id fl7mr21150924pab.43.1390262912117; Mon, 20 Jan 2014 16:08:32 -0800 (PST) In-Reply-To: <52DD8297.9050504@earthlink.net> References: <52DD8297.9050504@earthlink.net> Date: Tue, 21 Jan 2014 11:08:32 +1100 Subject: Re: 1st Sketch at at ReadOnly dict From: Chris Angelico Cc: "python-list@python.org" Content-Type: text/plain; charset=UTF-8 X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Newsgroups: comp.lang.python Message-ID: Lines: 22 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1390262921 news.xs4all.nl 2911 [2001:888:2000:d::a6]:46291 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:64382 On Tue, Jan 21, 2014 at 7:09 AM, Charles Hixson wrote: > # @note Instances can be created only from existing dicts. > > ## Class initializer. > # @param ddict The data dictionary to which this is a read only > # access. > # @throws TypeError if ddict is not a dict. > def __init__ (self, ddict = {}): > if not isinstance(ddict, dict): > raise TypeError("ddict must be a dict. It is " + > repr(ddict)) > self._ddict = ddict Instead of demanding that a dict (or dict subclass) be passed, why not simply pass all args on to dict() itself? Is there a reason this won't work? def __init__(self, *args, **kwargs): self._ddict = dict(*args, **kwargs) ChrisA