Path: csiph.com!weretis.net!feeder4.news.weretis.net!storethat.news.telefonica.de!feedme.news.telefonica.de!telefonica.de!fu-berlin.de!uni-berlin.de!not-for-mail
From: Tim Chase <python.list@tim.thechases.com>
Newsgroups: comp.lang.python
Subject: modifying parts of a urlparse.SplitResult
Date: Tue, 12 Jan 2016 05:52:36 -0600
Lines: 34
Message-ID: <mailman.55.1452601815.13488.python-list@python.org>
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
X-Trace: news.uni-berlin.de SUxNUg9XmCO4GUcrS8Zd2gCiHkAWfLuax5E0LoC/aWhQ==
Return-Path: <python.list@tim.thechases.com>
X-Original-To: python-list@python.org
Delivered-To: python-list@mail.python.org
X-Spam-Status: OK 0.002
X-Spam-Evidence: '*H*': 1.00; '*S*': 0.00; 'modify': 0.04; '(sorry': 0.09; 'lst': 0.09; 'stating': 0.09; 'tuple': 0.09; 'index': 0.13; '-tkc': 0.16; 'from:addr:python.list': 0.16; 'from:addr:tim.thechases.com': 0.16; 'from:name:tim chase': 0.16; 'magic': 0.16; 'pythonic': 0.16; 'received:io': 0.16; 'received:psf.io': 0.16; 'url:foo': 0.16; 'attribute': 0.18; '>>>': 0.20; '"",': 0.22; 'parse': 0.22; 'smtp': 0.23; 'import': 0.24; '(most': 0.24; "i've": 0.25; 'appear': 0.26; "skip:' 10": 0.28; 'skip:u 20': 0.28; 'skip:q 20': 0.29; 'received:184': 0.30; "i'd": 0.31; "can't": 0.32; 'traceback': 0.33; 'file': 0.34; 'this?': 0.34; 'but': 0.36; 'there': 0.36; 'to:addr:python-list': 0.36; 'received:10': 0.37; 'charset:us-ascii': 0.37; 'skip:p 20': 0.38; 'takes': 0.39; 'to:addr:python.org': 0.40; 'some': 0.40; 'skip:u 10': 0.61; 'skip:n 10': 0.62; 'more': 0.63; 'post,': 0.84
X-Sender-Id: wwwh|x-authuser|tim@thechases.com
X-Sender-Id: wwwh|x-authuser|tim@thechases.com
X-MC-Relay: Neutral
X-MailChannels-SenderId: wwwh|x-authuser|tim@thechases.com
X-MailChannels-Auth-Id: wwwh
X-MC-Loop-Signature: 1452599693209:2487431374
X-MC-Ingress-Time: 1452599693209
X-Mailer: Claws Mail 3.11.1 (GTK+ 2.24.25; x86_64-pc-linux-gnu)
X-AuthUser: tim@thechases.com
X-BeenThere: python-list@python.org
X-Mailman-Version: 2.1.20+
Precedence: list
List-Id: General discussion list for the Python programming language <python-list.python.org>
List-Unsubscribe: <https://mail.python.org/mailman/options/python-list>, <mailto:python-list-request@python.org?subject=unsubscribe>
List-Archive: <http://mail.python.org/pipermail/python-list/>
List-Post: <mailto:python-list@python.org>
List-Help: <mailto:python-list-request@python.org?subject=help>
List-Subscribe: <https://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
Xref: csiph.com comp.lang.python:101536

I can successfully parse my URLs.  However, I'd like to modify a part
then reassemble them.  However, like tuples, the parts appear to be
unmodifiable

  >>> URL = 'http://foo/path1/path2/?fragment=foo'
  >>> import urlparse
  >>> u = urlparse.urlparse(URL)
  >>> u  
  ParseResult(scheme='http', netloc='foo', path='/path1/path2/',
  params='', query='fragment=foo', fragment='')
  >>> u.query  
  'fragment=foo'
  >>> u.query = 'blah=baz'  
  Traceback (most recent call last):
    File "<stdin>", line 1, in <module>
  AttributeError: can't set attribute

The best I've been able to come up with is

  >>> u = urlparse.urlsplit(URL)
  >>> lst = list(u) # can't manipulate the tuple directly
  >>> lst[3] = "bar=baz" # 3 = query-string index
  >>> urlparse.urlunsplit(lst)  
  'http://foo/path1/path2/?bar=baz'

It takes knowing that "3" is the magic index (documented, but not
given some named-constant in urlparse) for the query-string.  Is
there some better, clearer, or more Pythonic way to do this?

-tkc


(sorry if this is a dupe post, as I got an SMTP bounce/error from
mail.python.org stating "service currently unavailable")