such a principle in mind, and knowing that it's worth spending
effort to uphold, will serve you well.
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`\dog, it's too dark to read.” —Groucho Marx |
_o__)
cts just aren't engineered for security.” —Brian |
`\ Valentine, senior vice-president of Microsoft Windows |
_o__)development, 2002 |
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Ben Finney writes:
> Bill Allen writes:
>
> > If I have a list defined as my_list = ['a','b','c'], what is the is
> > differnce between refering to it as my_list or my_list[:]?
>
> ‘my_list’ is a reference to the object you'
Kranzberg's First Law of Technology |
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ts, that is best discussed with
your course supervisor, not us.
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\ “Kissing a smoker is like licking an ashtray.” —anonymous |
`\ |
_o__)
es for both.” —John Andrew |
_o__) Holmes, _Wisdom in Small Doses_ |
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2015 by Ned Batchelder
https://www.youtube.com/watch?v=_AEJHKGk9ns>.
--
\ “I must say that I find television very educational. The minute |
`\ somebody turns it on, I go to the library and read a book.” |
_o__)—Groucho Mar
nciple is that you must not fool yourself, and you are the |
_o__) easiest person to fool.” —Richard P. Feynman, 1964 |
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`\leave politics alone, but politics won't leave you alone.” |
_o__) —Richard M. Stallman, 2002-07-26 |
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ht
ject knows nothing about that
relationship.
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`\ out, it was gone.” —Steven Wright |
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Peter Otten <__pete...@web.de> writes:
> Ben Finney wrote:
>
> > The Pythonic way to pronounce that would be “dunder Pete dunder”
> > https://wiki.python.org/moin/DunderAlias>.
>
> Hm, should I campaign for a peter() builtin?
You'll need a working implement
Albert-Jan Roskam writes:
> - Original Message -
> > From: Ben Finney
> > You'll need a working implementation first. Put it on BullCodes
> > https://bull.codes/> for bonus Python-based free-software
> > repository hosting points!
>
> Is bull.co
Alex Kleider writes:
> On 2015-04-22 05:40, Ben Finney wrote:
> > http://mako.cc/writing/hill-free_tools.html>
> >
> > Kallithea (which is what powers BullCodes) is free software, meaning
> > anyone is free to see how it works and change it and run their own
l-electric house. I forgot and left the |
`\ porch light on all day. When I got home the front door wouldn't |
_o__)open.” —Steven Wright |
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Jim Mooney writes:
> On 25 April 2015 at 18:03, Ben Finney wrote:
>
> > Digest mode should only ever be used if you know for certain you will
> > never be responding to any message.
>
> That brings up a great shortcut if you use gmail. If you select some
> text befo
rtrand Russell |
_o__) |
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boB Stepp writes:
> On Thu, Apr 30, 2015 at 12:15 AM, Ben Finney
> wrote:
> > If you actually need to read the documentation specifically for a
> > Python version that has not been supported since 2008, then I agree
> > that is a problem.
>
> I'm pretty much
plain text, and put the program text and
output in the message.
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`\alone.” —anonymous |
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and |
`\action, where it often substitutes for both.” —John Andrew |
_o__) Holmes, _Wisdom in Small Doses_ |
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es, it only binds a
reference to some value.
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`\unstable.” —Microsoft, Windows 95 bluescreen error message |
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Thank you for keeping our community welcoming and happy.
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\ “Oh, I realize it's a penny here and a penny there, but look at |
`\ me: I've worked myself up from nothing to a state of extreme |
_o__) poverty.” —Groucho Ma
“It's all in the mind, you know.” —The Goon Show |
`\ |
_o__) |
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p destroys the |
`\ spirit of society and leads to its intellectual |
_o__)impoverishment.” —Albert Einstein |
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maintain and improve their
docstrings :-)
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\ “It's my belief we developed language because of our deep inner |
`\ need to complain.” —Jane Wagner, via Lily Tomlin |
_o__) |
Ben Finney
, and not complicate the
connextions back and forth.
> Thank you for any help.
Hope that helps. Thank you for teaching Python 3 to more students!
--
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`\ trains law-abiding users to become [lawbreakers] out of
\“I took it easy today. I just pretty much layed around in my |
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_o__) though.” —Bug-Eyed Earl, _Red Meat_ |
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Steven D'Aprano writes:
> I mostly agree with what Ben says, comments below.
>
> On Wed, Jul 01, 2015 at 12:48:47PM +1000, Ben Finney wrote:
> > So please use `super`, even in single inheritance. Otherwise you are
> > restricting the usefulness of your class:
Alan Gauld writes:
> On 01/07/15 03:48, Ben Finney wrote:
> > Alan Gauld writes:
> >
> >> Whilst I agree with the general use of super I'm not sure what
> >> the MRO resolution has to do with this case?
> >
> > When accessing the superclass, t
a newly-encoutered name really is. All the
ones I've seen in third-party code would always be improved for clarity
by choosing a normal ‘foo’ or ‘_foo’ name.
> Are my understandings above correct or flawed?
I hope that helps.
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e Laurasian |
`\ Separatist Movement!” —wiredog, http://kuro5hin.org/ |
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on is educational television. The question is: |
`\ what is it teaching?” —Nicholas Johnson |
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To unsu
litical |
`\ office he's ever held legally.” —George Carlin, 2008 |
_o__) |
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Adams |
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u're not |
`\aiming high enough.” —Alan Kay |
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that value with whatever point in time is of interest.
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\ “Faith is the determination to remain ignorant in the face of |
`\ all evidence that you are ignorant.” —Shaun Mason |
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gustine of Hippo (354–430 CE) |
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\ “To have the choice between proprietary software packages, is |
`\ being able to choose your master. Freedom means not having a |
_o__)master.” —Richard M. Stallman, 2007-05-16 |
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and a half.” —Gracie Allen |
_o__) |
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Ben Finney writes:
> You may also be interested in the Python Tutor forum
> https://mail.python.org/mailman/listinfo/tutor> which is specially
> focussed on collaboratively teaching Python beginners.
Whoops, my apology! I failed to notice we are already in that forum :-)
--
\
Mark Lawrence writes:
> On 09/10/2015 16:47, Ben Finney wrote:
> > Whoops, my apology! I failed to notice we are already in that forum
> > :-)
>
> I simply had to roar with laughter at the signature you used for the
> above as it just seemed so apt, nothing personal :)
&g
r that function's class.
All the produced test cases will run separately, identified by the test
case method and the scenario name; and each one will fail or pass
separately. This makes it very easy to test a matrix of assertions
versus input/output expectations.
The ‘unittest.mock’ library
but how will we get three pink flamingos into one |
_o__) pair of Capri pants?” —_Pinky and The Brain_ |
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“Telling pious lies to trusting children is a form of abuse, |
`\plain and simple.” —Daniel Dennett, 2010-01-12 |
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s you may have will be very welcomed.
I hope that helps.
--
\ “Faith is generally nothing more than the permission religious |
`\ people give to one another to believe things strongly without |
_o__) evidence.” —Sam Harris, _Letter to a
irectory to allow the ‘sys.path’
modification to work as expected.
--
\ “Alternative explanations are always welcome in science, if |
`\ they are better and explain more. Alternative explanations that |
_o__) explain nothing are not welcome.” —Victor J. S
Ben Finney writes:
> * Python will automatically add a ‘sys.path’ entry for the directory
> containing the script named on the command line. So this:
>
> $ cd ~/Projects/lorem/
> $ python3 ./setup.py test
>
> will run the ‘setup.py’ program with ‘sys.path
H. Lawrence |
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themselves containers, so I suppose it counts
as a “complex” dictionary.
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`\ from the statues that are in all the other museums.” —Steven |
_o__) Wright |
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us amount of innovation |
_o__) happening.” —Steve Jobs |
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ll Moyers |
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law on your side, pound the law. If you have neither |
_o__) on your side, pound the table.” —anonymous |
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that it might |
`\ be wrong.” —Chris Torek |
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of which shouldn't be
changed only to fix this – which violates that idiom.
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\ “If we don't believe in freedom of expression for people we |
`\ despise, we don't believe in it at all.” —Noam Chomsky, |
_o__)
t of quite a few places, |
_o__) though.” —Bug-Eyed Earl, _Red Meat_ |
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modules for the correct Python 3
version.
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\“It is undesirable to believe a proposition when there is no |
`\ ground whatever for supposing it true.” —Bertrand Russell, _The |
_o__) Value of Scepticism_, 1928
ps://docs.python.org/3/library/tkinter.ttk.html>
http://www.tkdocs.com/>
--
\ “I’ve been an atheist ever since I heard there was only a |
`\ stairway to heaven.” —Stella Young, 1982–2014 |
_o__)
would fall into the domain of mental |
_o__) disturbance.” —John F. Schumaker |
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small, and put them in your message for
discussion.
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\ “I call him Governor Bush because that's the only political |
`\ office he's ever held legally.” —George Carlin, 2008 |
_o__)
ple.” —Daniel Dennett, 2010-01-12 |
_o__) |
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others) to represent “please replace the text ‘nor’ in that line, with
the text ‘not’ instead”.
--
\ “Do I believe in God? … without clarification of a kind I have |
`\never seen, I don’t know whether I believe or don’t believe in |
_o__)whatever a questioner has
epest sin against the human mind is to believe things |
`\ without evidence.” —Thomas Henry Huxley, _Evolution and |
_o__) Ethics_, 1893 |
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little kid we had a sand box. It was a quicksand |
`\ box. I was an only child... eventually.” —Steven Wright |
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tion of inputs that will trigger them at run
time.
For this and other reasons, it is highly recommended to develop unit
tests with your code, to make explicit assertions about exactly what
will trigger each branch of the code.
This, in turn, will lead to making your code simpler and less-branch
‘foo[key]’ for a mapping.
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`\thinks he already knows.” —Epictetus, _Discourses_ |
_o__) |
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y.
So accessing an item in a mapping by key is not indexed access.
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\ “When we pray to God we must be seeking nothing — nothing.” |
`\—Francis of Assisi |
_o__) |
Ben
Ben Finney writes:
> Oscar Benjamin writes:
>
> > According to a narrow definition of indexed access. I would say that
> > d[k] is index access even if d is a dict and k a key.
The sense of “index” implied is used consistently throughout Python
https://docs.python.org/3/gloss
e Pascal (1623–1662), |
_o__) Pensées, #894. |
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made in a very narrow field.” —Niels Bohr |
_o__) |
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Ben Finney writes:
> I have today published a different approach, which I designed for one
> code base ad is to date its only user. I'm looking for more feedback.
>
> https://pypi.python.org/pypi/gajja/>
I forgot to mention the appropriate channels for feedback:
Plea
ieve in immortality of the individual, and I |
`\consider ethics to be an exclusively human concern with no |
_o__) superhuman authority behind it.” —Albert Einstein, letter, 1953 |
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hey said my |
`\ personality was weird. … That's okay, I have four more.” |
_o__) —Bug-Eyed Earl, _Red Meat_ |
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ogramming” which Python has good support
for. This is how it's done.
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`\ Java's designers were consciously designing a product for |
_o__) people not as smart as them.” —Paul
|
_o__) of everyone.” —John Maynard Keynes |
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ou too? I thought I was the only one!’” —C.S. |
_o__) Lewis |
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\“The idea that He would take his attention away from the |
`\ universe in order to give me a bicycle with three speeds is |
_o__) just so unlikely that I can't go along with it.” —Quentin Crisp |
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s elevator |
_o__)practice.” —Steven Wright |
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`\to chance.” —Robert R. Coveyou |
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unbearable.” —hotel, Bucharest |
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1
>>> "Z"[:i] + "Z"[i+1:]
'Z'
Can you explain why that would be the case?
--
\ “I think a good gift for the President would be a chocolate |
`\ revolver. And since he's so busy, you'd pr
the purpose. An opaque name like ‘n’ is not helpful.
--
\ “Why doesn't Python warn that it's not 100% perfect? Are people |
`\ just supposed to “know” this, magically?” —Mitya Sirenef, |
_o__)
o/testing-in-python>.
--
\ “I never forget a face, but in your case I'll be glad to make |
`\ an exception.” —Groucho Marx |
_o__) |
Ben Finney
_
Namespaces are a honking good idea in Python, you
should not seek to avoid them.
--
\ “I may disagree with what you say, but I will defend to the |
`\death your right to mis-attribute this quote to Voltaire.” |
_o__) —A
learn.
--
\ “Unix is an operating system, OS/2 is half an operating system, |
`\Windows is a shell, and DOS is a boot partition virus.” —Peter |
_o__)H. Coffin |
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ting
system's facilities for managing files and processes.
--
\“Humanity has advanced, when it has advanced, not because it |
`\ has been sober, responsible, and cautious, but because it has |
_o__)been playful,
Ben Finney writes:
> Short of [the heavyweights Vim and Emacs], I'd still recommend a
> community-owned, free-software, highly flexible programmer's editor.
> If you're on GNU+Linux, use the Kate or GEdit editors; they integrate
> very nicely with the default desktop
Ben Finney writes:
> In that case, my recommendation is to learn a good programmer's
> editor, and let your students gain exposure to that.
>
> Emacs and Vim are the unchallenged masters here […]
>
> They aren't a small investment, though. […] it may be too much t
e very interested to see that.
--
\ “Pinky, are you pondering what I'm pondering?” “I think so, |
`\Brain, but don't you need a swimming pool to play Marco Polo?” |
_o__) —_Pinky and The Bra
ion was
made, and on the face of it I disagree.
--
\“But it is permissible to make a judgment after you have |
`\examined the evidence. In some circles it is even encouraged.” |
_o__)—Carl Sagan, _The Burden of Skepticism_, 1987 |
Ben Finney
_
Ben Finney writes:
> Hmm. That is a confusing inconsistency, I agree. It is deliberate, and
> explicitly documented:
>
> Note that leading zeros in a non-zero decimal number are not
> allowed. This is for disambiguation with C-style octal literals,
> which Python u
ution to mountains of waste is not more |
`\ landfill sites but fewer shopping centres.” —Clive Hamilton, |
_o__)_Affluenza_, 2005 |
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Ben Finney writes:
> The first one is defined (by the syntax for literals) to create a
> *single* string object. Semantically, the fragments are specifying one
> object in a single step.
>
> The second is semantically (i.e. by the semantics of how such
> expressions are defined
g; where would you put it?” —Steven |
`\Wright |
_o__) |
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ve only joined recently; so they do not automatically benefit from
past conversations here.
--
\ “DRM doesn't inconvenience [lawbreakers] — indeed, over time it |
`\ trains law-abiding users to become [lawbreakers] out of sheer |
_o__)frustration.” —Charles Stros
known seed.
Hopefully you can take this as an example of how to better design
systems so they don't have tightly-entangled external dependencies.
--
\ “The good thing about science is that it's true whether or not |
`\ you believe in it.” —Neil deGrasse Tyson, 2011-02-04 |
_o__)
boB Stepp writes:
> On Sat, Mar 19, 2016 at 8:03 AM, Steven D'Aprano wrote:
> > On Sat, Mar 19, 2016 at 04:05:58PM +1100, Ben Finney wrote:
> >> if rng is None:
> >> rng = random.random
> >
> > Typo: you want rng = random.
Steven D'Aprano writes:
> On Mon, Mar 21, 2016 at 12:18:01AM +1100, Ben Finney wrote:
> > No, I meant what I wrote. The ‘rng’ parameter is expected to be
> > bound to a RNG. If the caller has not specified a custom RNG
> > instance, we bind ‘rng’ to the stan
boB Stepp writes:
> On Sun, Mar 20, 2016 at 8:19 PM, Ben Finney
> wrote:
> > if rng is None:
> > rng = random._inst
> >
> > which is the default RNG instance in the module.
>
> Can I not use:
>
> if rng is None:
> rng = random.Random
Kulawiec |
_o__) |
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them to sit down and shut up.” —Phyllis Diller |
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