Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!newsfeed.xs4all.nl!newsfeed1.news.xs4all.nl!xs4all!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 0.022 X-Spam-Evidence: '*H*': 0.96; '*S*': 0.00; 'static': 0.04; 'position,': 0.05; 'subject:query': 0.07; 'assuming': 0.09; 'here?': 0.09; 'cc:addr:python-list': 0.11; 'assume': 0.14; '>>': 0.16; 'acted': 0.16; 'equations': 0.16; 'initially,': 0.16; 'itself,': 0.16; 'opposite': 0.16; 'quantum': 0.16; 'relevant.': 0.16; 'all.': 0.16; 'wrote:': 0.18; 'seems': 0.21; 'email addr:gmail.com>': 0.22; 'cc:addr:python.org': 0.22; 'subject:Code': 0.24; 'initial': 0.24; 'environment': 0.24; 'cc:2**0': 0.24; '>': 0.26; 'train': 0.26; 'subject:/': 0.26; 'header:In-Reply-To:1': 0.27; 'point': 0.28; 'am,': 0.29; 'properties': 0.29; 'needed.': 0.30; 'message-id:@mail.gmail.com': 0.30; 'url:mailman': 0.30; 'url:wiki': 0.31; 'assumes': 0.31; 'constant': 0.31; 'url:python': 0.33; '(2)': 0.35; 'case,': 0.35; 'equal': 0.35; 'received:google.com': 0.35; 'there': 0.35; 'object,': 0.36; 'url:listinfo': 0.36; 'similar': 0.36; 'url:org': 0.36; 'starting': 0.37; 'skip:& 10': 0.38; '(3)': 0.38; 'stopped': 0.38; 'environment.': 0.39; 'moving': 0.39; 'either': 0.39; 'url:mail': 0.40; 'how': 0.40; 'ian': 0.60; 'simply': 0.61; 'maximum': 0.63; 'reached': 0.63; 'skip:n 10': 0.64; 'our': 0.64; 'movement': 0.65; 'to:addr:gmail.com': 0.65; 'between': 0.67; 'physics': 0.68; 'other.': 0.75; 'heh.': 0.84; 'regain': 0.84; 'travels': 0.84; '<>*': 0.95; 'traveling': 0.96 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:to :cc:content-type; bh=Uy1sfBn14NuRjrUK6xYe9T3/0eHO/ykBcTX4fwR744U=; b=T5KCcGisa9hzoaurIm7MrszEItlrUsJrZwOaix9EuZJ3c/X9DeqIiDTzQSeU7F1F9t HhqrsY7DQXDS7CCcG/KvNm+FYFtMY7a8E38F5KXigkWTPgy0FWXnGL+wqhN92sCGvBtu o04dCva61MA46DwnPESjgLKgOKvuOAS49kIz9bFC0XUyHg0kFlVqBINnLjm2TjeUAGuu m2GSnDmYL4jTw+x2f/g084Rf8mg4aCMTD+1/m9HrBPHQAAQ7UV5fb8L3N5ZcKtTL8N0b S3FuJjzyakQ5p5+BiF2Im3rpcIhD7z/X3Mb1AkAyRrfrEShbzp1d/+xRMwDSVIX/3Vk8 MLSA== MIME-Version: 1.0 X-Received: by 10.224.132.5 with SMTP id z5mr112942qas.101.1396337643798; Tue, 01 Apr 2014 00:34:03 -0700 (PDT) In-Reply-To: References: <533a3fd8$0$2909$c3e8da3$76491128@news.astraweb.com> Date: Tue, 1 Apr 2014 03:34:03 -0400 Subject: Re: Code style query: multiple assignments in if/elif tree From: David Hutto To: Ian Kelly Content-Type: multipart/alternative; boundary=001a11c22b303ec40504f5f631ba Cc: Python 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: 189 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1396337645 news.xs4all.nl 2854 [2001:888:2000:d::a6]:35233 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:69482 --001a11c22b303ec40504f5f631ba Content-Type: text/plain; charset=ISO-8859-1 You would be assuming a quantum leap type theory, that the object has no Vo->V1, it just adjusts to the constant immediately, instead of what I would call the quantum leap,without other 'theories' involved, that it has a classical physics type movement in which it can accelerate from a resting position, to a velocity, and then regain orbit: http://wiki.answers.com/Q/What_is_a_quantum_leap On Tue, Apr 1, 2014 at 3:21 AM, David Hutto wrote: > u is the initial velocity from a starting/resting point, not a static > speed at that point, and begins to accelerate, > over a particular timeframe, in which it's momentum is not stopped by > friction on which the rails/environment it travels upon has, or the similar > properties the object might have during acceleration in relation to the > environment it travels within. > > So the object has a starting point at which there is no equal, or opposing > force, as it begins to accelerate from a resting position(Newton: an object > will remain in motion, until acted upon by an equal or opposite force, and > in this case the motion is propulsion of the object, or the newtons of > propulsion, until it is moving at the exact speed of the propulsion applied > to the object->Vo-V1, with 0 friction/viscosity during this timeframe). > > The difference in our opinions, seems to be that there is an initial > resting state, and not at an already accelerated motion that has reached > it's maximum capacity. > > > So there is a dynamic in my mind's eye, where the object is at a "resting" > point initially, and either the environment, or the object can maneuver > their own viscosity in relation to the other. > > > On Tue, Apr 1, 2014 at 2:39 AM, Ian Kelly wrote: > >> On Tue, Apr 1, 2014 at 12:24 AM, David Hutto >> wrote: >> >> >> >> >> (1) v = u + at >> >> >> (2) s = 1/2(u + v)t >> >> >> (3) s = ut + 1/2(at^2) >> >> >> (4) v^2 = u^2 + 2as >> >> >> >> >> >> Only (1) and (3) are needed. >> >> > >> >> > Okay, what's u here? Heh. >> >> >> >> u is the initial velocity; v is the velocity after accelerating at a >> for >> >> time t. >> > >> > >> > This assumes that the viscosity is in a state of superfluidity, and in a >> > perfect state between itself, and it's traveling environment. >> >> I fail to see how this is relevant. I would assume that the amount of >> friction is already modeled in the acceleration constants; if it were >> zero then the brakes would be nonfunctional and the train would not be >> able to accelerate or decelerate at all. In any case, a change in >> friction simply works out to a change in acceleration. The equations >> above still hold true. >> -- >> https://mail.python.org/mailman/listinfo/python-list >> > > > > -- > Best Regards, > David Hutto > *CEO:* *http://www.hitwebdevelopment.com > * > -- Best Regards, David Hutto *CEO:* *http://www.hitwebdevelopment.com * --001a11c22b303ec40504f5f631ba Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
You would be assuming a quantum leap type theory, tha= t the object has no Vo->V1, it just adjusts to the constant immediately,= instead of what I would call the quantum leap,without other 'theories&= #39; involved, that it has a classical physics type movement in which it ca= n accelerate from a resting position, to a velocity, and then regain orbit:=

=A0=A0=


O= n Tue, Apr 1, 2014 at 3:21 AM, David Hutto <dwightdhutto@gmail.com> wrote:
u is the initial veloc= ity from a starting/resting point, not a static speed at that point, and be= gins to accelerate,
over a particular timeframe, in which it's momentum is not stopped= by friction on which the rails/environment it travels upon has, or the sim= ilar properties the object might have during acceleration in relation to th= e environment it travels within.

So the object has a starting point at which there is no= equal, or opposing force, as it begins to accelerate from a resting positi= on(Newton: an object will remain in motion, until acted upon=A0 by an equal= or opposite force, and in this case the motion is propulsion of the object= , or the newtons of propulsion, until it is moving at the exact speed of th= e propulsion applied to the object->Vo-V1, with 0 friction/viscosity dur= ing this timeframe).

The differe= nce in our opinions, seems to be that there is an initial resting state, an= d not at an already accelerated motion that has reached it's maximum ca= pacity.


<= div class=3D"gmail_extra">So there is a dynamic in my mind's eye, where= the object is at a "resting" point initially, and either the env= ironment, or the object can maneuver their own viscosity in relation to the= other.


On Tue, Apr 1, 2014 at 2:39 AM, Ian Kelly <<= a href=3D"mailto:ian.g.kelly@gmail.com" target=3D"_blank">ian.g.kelly@gmail= .com> wrote:
On Tue, Apr 1, 2014 at 12:24 AM, David Hutto <dwightdhutto@gmail.= com> wrote:
>>
>> >> (1) v =3D u + at
>> >> (2) s =3D 1/2(u + v)t
>> >> (3) s =3D ut + 1/2(at^2)
>> >> (4) v^2 =3D u^2 + 2as
>> >>
>> >> Only (1) and (3) are needed.
>> >
>> > Okay, what's u here? Heh.
>>
>> u is the initial velocity; v is the velocity after accelerating at= a for
>> time t.
>
>
> This assumes that the viscosity is in a state of superfluidity, and in= a
> perfect state between itself, and it's traveling environment.

I fail to see how this is relevant. =A0I would assume that the amount= of
friction is already modeled in the acceleration constants; if it were
zero then the brakes would be nonfunctional and the train would not be
able to accelerate or decelerate at all. =A0In any case, a change in
friction simply works out to a change in acceleration. =A0The equations
above still hold true.
--
https://mail.python.org/mailman/listinfo/python-list



--
Best Regards,
David Hutto
CEO: http://www.hitwebdevelopment.com=



--
Best Regards,
David Hutto
<= b>CEO: http://www.hitwebdevelopment.com
--001a11c22b303ec40504f5f631ba--