tional expression while parsing
> 'if' statement").
Although wouldn't it be "expected boolean expression" rather than
conditional expression? Python doesn't care how the argument to 'if'
is arrived at so long as it's a boolean. And with assignment
On 2021-05-24, Alan Gauld wrote:
> On 24/05/2021 16:54, Michael F. Stemper wrote:
>
>> In my early days of writing python, I created lists named "list",
>> dictionaries named "dict", and strings named "str". I mostly know better
>> now, but so
I have studied many programming languages and am amused when people attack
python as if every other language is somehow more optimal.
Cameron and others have provided examples but look at positives AND negatives.
Yes code like: num = int(num)
does look a tad off as it reuses the same name for
On 25/05/2021 00:41, Jon Ribbens via Python-list wrote:
> What would you call the argument to a function that
> returns, say, an upper-cased version of its input?
Probably 'candidate' or 'original' or 'initial' or
somesuch. Or even just 's'.
On 25/05/2021 23:23, Terry Reedy wrote:
> In CPython's Flexible String Representation all characters in a string
> are stored with the same number of bytes, depending on the largest
> codepoint.
I'm learning lots of new things in this thread!
Does that mean that if I give P
f new things in this thread!
>
> Does that mean that if I give Python a UTF8 string that is mostly single
> byte characters but contains one 4-byte character that Python will store
> the string as all 4-byte characters?
>
> If so, doesn't that introduce a pretty big storage ove
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HomeWork,
Nobody is suggesting that you change your attitude because of one obstacle.
But what if EVERYBODY here gives you similar feedback that python IS the way it
is irrelevant of what other language designers have chosen or you expect?
Even if you propose a change that might be nice but it
w to use it. But that
book is now over 20 years old and based on Python 1.5.3! but
interestingly nearly all the reviewers specifically praised my
inclusion of a chapter on debugging.
>> I knew the debugging process with Fortran and C, but haven't learned how to
>> effectively use pdb t
://mail.python.org/mailman/listinfo/python-list
r. Perhaps the best
> I've found so far is from the Python documentation:
>
> A property object has getter, setter, and deleter methods usable as
> decorators that create a copy of the property with the corresponding
> accessor function set to the decorated function.
A propert
s depressing how many
books and articles focus on them to the exclusion of all
else that make up the OOP paradigm! Anyway, rant over...
> I understand what a "property" is, how it is used and the benefits,
Do you? What is that based on? Is it how properties are used in OOP?
Or how the
On 30/05/2021 12:23, Mr.Incognito wrote:
>Hello
>
>I downloaded the latest versioon of Python and tried to open several .py
>files, but it doesn't open. It opens for a sec, then closes itself. I
>tried uninstalling and reinstalling, but it doesn't work.
On 30/05/2021 18:26, [email protected] wrote:
> I tried winpdb-reborn some time last year on my Win10 system (python 3.8.3
> at that time), but could not figure out how to use it to debug a python
> script that uses the curses module.
You are not alone. debugging curses is o
You guys are all very knowledgeable but he is asking what to say to an
EDITOR who clearly may know little or nothing about computers and thinks
python is a snake and not a language and may need to be spoken to in his own
language which understands other forms of abstraction better.
So, just for
s/new
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On 2021-05-30, Terry Reedy wrote:
> Note: at least one person says a property *pretends* to be an attribute.
No, I said it pretends to be a *data* attribute. It is effectively
several methods in a trenchcoat pretending to be a variable.
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. Also,
calling type() on a member gave the result instead of the
expected .
I am using Python 3.9.5 from python.org on macOS 11.4. Below is a small test
script and its output. Are my expectations wrong or is there a problem with
Enum?
Regards,
Colin
---
from
> On 31 May 2021, at 18:24, Peter Otten <[email protected]> wrote:
>
> On 31/05/2021 17:57, Colin McPhail via Python-list wrote:
>> Hi,
>> According to the enum module's documentation an Enum-based enumeration's
>> members can have values of any t
method. It's just that in most cases the method is implemented
> in C and it looks up a value in the object's dict.
Sure, if we take the "lowest level" and pretend there are no
higher-level structures it's all just electrons doing apparently
random things and there's nothing more to be said about it.
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On 31/05/2021 01:24, Greg Ewing wrote:
> On 31/05/21 8:20 am, Alan Gauld wrote:
>>
>> That's a very Pythonic description.
>
> If it's a book about Python, it needs to be. The word "property"
> has a very specialised meaning in Python.
>
>
ke its function or retrieve the value it returns.
> (I'm assuming that by "data attribute" you mean a piece of
> data that's stored directly in the object. If you mean
> something else, we might be talking at cross purposes.)
I mean it in the sense it is used by the Python documentation.
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On 31/05/2021 16:16, Grant Edwards wrote:
> On 2021-05-30, Alan Gauld via Python-list wrote:
>> You are not alone. debugging curses is one of the biggest obstacles to
>> its use.
>
> Can't you just run the debugger in a different window and attach to
> the process
On 31/05/2021 15:59, Dennis Lee Bieber wrote:
> On Sun, 30 May 2021 21:20:24 +0100, Alan Gauld via Python-list
> declaimed the following:
>
>> On 30/05/2021 17:57, Irv Kalb wrote:
>>> I am doing some writing (for an upcoming book on OOP), and I'm a little
>>&
ke '22.3' via astype
or pd.to_numeric is below
Unable to parse string "22." at position 0
Thanks in advance
EK
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On 01/06/2021 21:18, Rich Shepard wrote:
> On Sun, 30 May 2021, Cameron Simpson wrote:
>
>> I've only just started with pdb. As of Python 3.7 there's a builtin
>> function named breakpoint() which drops you into the debugger.
> I'm stuck with neither appro
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On 02/06/2021 14:35, jayshankar nair via Python-list wrote:
> import tools.fab.dev_utils as dev_utilsImportError: No module named
> tools.fab.dev_utils
> Please let me know which package i have to install.
Work backwards.
Can you import tools.fab?
Can you import tools?
Once you know
On 2021-06-08, D'Arcy Cain wrote:
> Given that mailman still runs under 2.7 and that's being deprecated,
> does anyone have a suggestion for a replacement?
There is always Mailman 3...
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On 2021-06-08, Grant Edwards wrote:
> On 2021-06-08, Paul Bryan wrote:
>> How about Mailman 3.x on Python 3.x?
>
> According to https://www.gnu.org/software/mailman/requirements.html
> mailman 3.x still requires Python 2.7 for the archiver and the web UI.
I'm pretty
On 2021-06-08, Terry Reedy wrote:
> On 6/8/2021 4:36 PM, Jon Ribbens via Python-list wrote:
>> On 2021-06-08, Grant Edwards wrote:
>>> On 2021-06-08, Paul Bryan wrote:
>>>> How about Mailman 3.x on Python 3.x?
>>>
>>> According to https:
Not sure if this is the right list for jython questions.
I am getting started with both python and jython. My use case need is invoking
python from java. org.python:jython:2.7.2 loaded ok.
To check, I executed the following.
ScriptEngineManager manager = new ScriptEngineManager();
List
Finally found the solution
Options.importSite = false;
which solved my issue.
I can't set Bindings and pass args to script. The only example I found is for
JavaScript. I think maybe it doesn't work for jython.
Thanks
____
From: Python-list on
behal
org/mailman/listinfo/python-list
On 13/06/2021 04:21, dn via Python-list wrote:
> What do you think a professionally-recognisable series of skill-levels
> for programmers?
This has been done or attempted many times, with perhaps the most
complete scheme being the British Computer Society's
"Industry Standard Mod
Hi,
I would like to know if for a small app for instance that requires a connection
to a remote server database if php is more suitable than Python mainly
regarding security.
Php requires one port for http and one port for the connection to the database
open. If using Python with a tkinter gui
This puzzled me, so I played around with it a bit (Python 3.8.3):
n = []
for i in range(3):
n.append((1,7,-3,None,"x"))
for i in range(3):
n.append((1,7,-3,None,"x"))
print([id(x) for x in n])
a = 4
n = []
for i in range(3):
n.append((1,7,-3,a,None,&q
use less space when possible.
Now if you really still want true copies, what ways might fool a compiler?
NoDup = [(5, 2), (6-1, 6/3), (12%7, 1/1 + 1/1)]
-Original Message-
From: Python-list On
Behalf Of Greg Ewing
Sent: Tuesday, June 15, 2021 7:11 PM
To: [email protected]
Subject
Greg,
My point was not to ASK what python does as much as to ask why it matters to
anyone which way it does it. Using less space at absolutely no real expense
is generally a plus. Having a compiler work too hard, or even ask the code
to work too hard, is often a minus.
If I initialized the
worth investigating.
There is a grid in Tix but its quite hard to use and Tix is now
deprecated. It was also a bit unreliable when used from
Python (that's euphemistic for "I couldn't get it to work!" :-)
But there is nothing I know of for Tkinter that provides views
of database
n_gauld
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22 POP_JUMP_IF_FALSE 21 (to 14)
24 LOAD_CONST 0 (None)
26 RETURN_VALUE
>>>
(there may be mistakes in this) but this is probably too much to expect
of the compiler.
Rob Cliffe
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On 19/06/2021 07:50, Chris Angelico wrote:
On Sat, Jun 19, 2021 at 4:16 PM Rob Cliffe via Python-list
wrote:
On 18/06/2021 11:04, Chris Angelico wrote:
sys.version
'3.10.0b2+ (heads/3.10:33a7a24288, Jun 9 2021, 20:47:39) [GCC 8.3.0]'
def chk(x):
... if not(0 < x
n Windows or somewhere in Python.
Can anybody shed light on this?
Best wishes
Rob Cliffe
PS I have a very vague idea it's to do with mixing 32-bit and 64-bit
software.
On 20/06/2021 05:21, Liya Ann Sunny wrote:
After installing Anaconda, I tried to open the anaconda navigator but it did
not
in range(1,
last)]))
Now why you want this is beyond me!
-Original Message-
From: Python-list On
Behalf Of Greg Ewing
Sent: Tuesday, June 22, 2021 7:05 PM
To: [email protected]
Subject: Re: Optimizing Small Python Code
On 23/06/21 3:03 am, Kais Ayadi wrote:
> for n in range(1, 7):
>
the string and uncompressed it, you might have code like:
print(unzip("n*n&&S!~se"))
-Original Message-
From: Python-list On
Behalf Of Michael F. Stemper
Sent: Wednesday, June 23, 2021 10:23 AM
To: [email protected]
Subject: Re: Optimizing Small Python Code
O
pare the output will be fooled.
-----Original Message-
From: jan
Sent: Thursday, June 24, 2021 3:01 AM
To: Avi Gross
Cc: [email protected]
Subject: Re: Optimizing Small Python Code
If I'm not mistaken, the original output is O(n^2) in quantity of chars, and as
output time is propo
like "x" for example, you
can write a function y() that builds in the code described or any variant
and your program becomes:
Import x
y()
and it would print out whatever you need.
If you can get the python interpreter to make that module standard, it can
be shorted mo
What's about installing?
https://pypi.org/project/pyttsx3/
pe 2. heinäk. 2021 klo 23.41 Nikita Lohale ([email protected])
kirjoitti:
> Traceback (most recent call last):
> File "f:\Nikita\Python programming\Iron Man Jarvis AL\jarvis.py", line
> 1,
hotos/alangauldphotos
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2050 results! LOL!
https://www.google.com/search?as_q=google+contacts&as_epq=&as_oq=&as_eq=&as_nlo=&as_nhi=&lr=&cr=&as_qdr=all&as_sitesearch=pypi.org&as_occt=any&safe=images&as_filetype=&tbs=
-Original Message-
From: Python-list On
Beha
Hello,
pe 23. heinäk. 2021 klo 21.44 Chris Green ([email protected]) kirjoitti:
> This isn't a question about how to set PYTHONPATH so that Python code
> can find imported modules, it's about what is a sensible layout for
> one's home directory - i.e. where to put Python
I recently downloaded the latest version of python, 3.9.6. Everything works
except, the turtle module. I get an error message every time , I use basic
commands like forward, backward, right and left. My syntax is correct:
pat.forward(100) is an example. Can you tell me what is wrong
the way they probably did not write proper code in the first
place that loads the module(s) they need?
-Original Message-
From: Python-list On
Behalf Of Dennis Lee Bieber
Sent: Monday, July 26, 2021 9:46 PM
To: [email protected]
Subject: Re: a simple question
On Mon, 26 Jul 2021 22:19
it, diff, log, status, etc.
It's not completely unlike what you're describing above, which is
already supported automatically by argparse.
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On 2021-08-03, Roel Schroeven wrote:
> Jon Ribbens via Python-list schreef op 3/08/2021 om 17:48:
>> On 2021-08-03, Michael Torrie wrote:
>> > On 8/2/21 1:43 PM, Sven R. Kunze wrote:
>> >> maybe, I am missing something here but is it possible to specify a
>>
u, I've been using it for over 30 years. In any
>> case you can find some traces of it in the "regular expressions quick
>> reference" on the site https://regex101.com (bottom right side).
>
> ...if I'm not mistaken, the '|' it is part of normal regula
; > back to a new CSV file. My python script produces the correct results on
> > its own, but I am not able to get the same results when using Flask. I am
> > new to flask.
> >
> [snip]
> >
> > csv_reader = csv.reader(new)
> >
> [snip]
> >
&
Am 11.08.2021 um 05:22 schrieb Terry Reedy:
Python is a little looser about whitespace than one might expect from
reading 'normal' code when the result is unambiguous in that it cannot
really mean anything other than what it does. Two other examples:
>>> if3: print('
On 11/08/2021 19:10, MRAB wrote:
On 2021-08-11 18:10, Wolfram Hinderer via Python-list wrote:
Am 11.08.2021 um 05:22 schrieb Terry Reedy:
Python is a little looser about whitespace than one might expect
from reading 'normal' code when the result is unambiguous in that it
cannot r
place for anyone to
ask such a question, especially as we have no real idea what was taught and
expected. Python is too rich a language and can be taught all kinds of ways
including many that largely ignore object-orientedness or other ways that
professionals use and appreciate.
There are lots of
ords are being supplied.
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On 2021-08-18, Robin Becker wrote:
> On 17/08/2021 22:47, Jon Ribbens via Python-list wrote:
> ...
>> That's only true if you're not using HTTPS - and you should *never*
>> not be using HTTPS, and that goes double if forms are being filled
>> in and d
sure you were running Python v3 and not python v2?
In v2 tkinter is spelled Tkinter.
If that is the issue then reinstalling python v3.x and ensuring
that it is the executable used should resolve the issue.
Another option might be that you are using virtual environments
which could result in all manne
On 2021-08-23, Loris Bennett wrote:
> If instead of
>
> mail.set_content(body)
>
> I do
>
> mail.set_content(body, cte="quoted-printable")
Try print(mail.get_content()) rather than print(mail.as_string())
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Hi,
Here is Pyto, the first animated character that help you Learn Python like you
play video games Why not implement me on Python PyPI ???
Episode 1: Intro / Who is Pyto ? / The Idle World | Pytorial
|
|
|
| | |
|
|
|
| |
Episode 1: Intro / Who is Pyto ? / The Idle World
cale DNS hack is probably capable of getting a very
> legit-looking SSL cert for the name as well.
There are so many trusted CAs these days that the chances of them all
being secure approaches zero - they are not all equal yet they are all
equally trusted. Which is why a change of CA on a site you have visited
before is potentially suspicious.
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On 2021-08-25, Chris Angelico wrote:
> On Thu, Aug 26, 2021 at 12:16 AM Jon Ribbens via Python-list
> wrote:
>> There are so many trusted CAs these days that the chances of them all
>> being secure approaches zero - they are not all equal yet they are all
>> equally truste
On 2021-08-25, Chris Angelico wrote:
> On Thu, Aug 26, 2021 at 12:48 AM Jon Ribbens via Python-list
> wrote:
>> Another attempt at combatting this problem is DNS CAA records,
>> which are a way of politely asking all CAs in the world except the
>> ones you choose "ple
he permitted CAs - since, as you point
out, they genuinely own and control the relevant IP address.
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[1, 3, 1, 13, 11, 4, 3, 5, 2, 4]
And the code can be a tad shorter, LOL!
But obviously then you have more overhead than an iterative solution or one
using a generator ...
-----Original Message-
From: Python-list On
Behalf Of Alan Gauld via Python-list
Sent: Saturday, August 28, 2021 6:52 PM
To:
On 29/08/2021 11:28, Hari wrote:
> i was download ur python software but it is like boring user interface
I agree it is a boring user interface. Just 3 chevrons: >>>
You can change it a little if you want but ultimately its
just an invitation to type commands.
What kind of interface
gram web site
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re ways to add color or even odd characters and graphics to
some prompts but who needs sexy?
Realistically, many of us do so much of the programming elsewhere as in some
editor or environment, and especially a language like python where indentation
levels are strictly a part of the language.
dphotos
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e reporting and some updates showing as having happened in
the future!
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Author of the Learn to Program web site
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people. Most still see it
as a benefit because they get longer working daylight.
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Author of the Learn to Program web site
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Well, up to a point.
In Python 2 the output from
print 1, 2
is '1 2'
In Python 3 if you add brackets:
print(1, 2)
the output is the same.
But if you transplant that syntax back into Python 2, the output from
print(1, 2)
is '(1, 2)'. The brackets have turned two s
to be able to
call.
It'd be nice to just be able to tell the "size of data", or something like
that, that was stored in the *data? I note there is len "field" in the
structure mpd_t
Sorry for the dumb question
Thanks,Duncan
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issue - except
we'd be an hour out of sync with the EU. (Post Brexit that may
not be seen as a problem!! :-)
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Author of the Learn to Program web site
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http://www.amazon.com/author/alan_gauld
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ave one extra put it here. If you have two, put
one here and one there. My method had all kinds of bells and whistles that
this specific case did not need.
Let me end with asking if anyone has ever seen a mild variant of this:
... # code
while false
apologize()
... # more code
-Original M
something kills ...)
In languages like C/C++ there are people who make up macros like:
#define INDEFINITELY_LOOP while (true)
Or something like that and then allow the preprocessor to replace
INDEFINITELY_LOOP with valid C code.
So, how to do something like that in python, is a challenge left to
t, rather than
within many existing parts.
Has anyone mentioned the really stupid looking forever loop in languages
with the other style of for loop?
for ( ; ;)
All that generally was, was an initialization command before a while and so
on but here all three parts were null, so why use it?
And
I hate to quibble but as almost anything in Python can evaluate to being
truthy, a command like
while "never"
evaluates to true as the string is not empty.
I meant a generator like
>>> def boring():
while True: yield()
>>> for _ in boring
ormal then head off into hyperspace at warp speed.
Python too has a way to write fairly unsophisticated programs as well as
idioms and methods that rapidly become hard to comprehend.
-Original Message-----
From: Python-list On
Behalf Of Stefan Ram
Sent: Monday, September 6, 2021 7:49 PM
To: p
the one to use
beyond that point.
So, I am not sanguine on trying to enforce some standards to make your code
easy to read by others and am more a fan of suggesting enough comments in
the code to guide anyone on your own idiosyncratic uses.
-Original Message-
From: Python-list On
Behalf Of
?!) for a while.
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Author of the Learn to Program web site
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http://www.amazon.com/author/alan_gauld
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them when
it seems reasonable. And, a smart person, if they see nothing new, might
just go back to their old language or ...
Pick a language that easily supports regular expressions and object creation
and functional programming and so on, like python, and ask why you might
want to use it to simulate
to do what you want.
But if you have developed your own package and want to guarantee the user
does not undo your work in specific cases, you should also call some things
as explicitly within your own namespace.
Back to Python, it is a tad too flexible in some places and my point was
that it would
Charles,
This forum is for python discussions so I will clarify that there is nothing
wrong with making up a new language, including by bootstrapping an old
language. But why not call it new and do not try to confuse people using the
old.
Python has grown and added much over the years and even
d:M-b'
Replace D and M with _D_, _M_
>>> percol.view.STACKLINE = re.sub(r'([DM])', r'_\1_',
percol.view.STACKLINE)
'Fold:F1,F2,F3 Push:C-p Pop:_M_-p Script:_M_-s _D_ir:_M_-d _D_ircmd:_M_-b'
Regards,
Roland
> How to achieve this purpose?
>
95m'
> OKBLUE = '\033[94m'
> OKGREEN = '\033[92m'
> WARNING = '\033[93m'
> FAIL = '\033[91m'
> ENDC = '\033[0m'
> LIGHTCYAN = '\033[1;36m'
> LIGHTGRAY = '\033[0;37m'
>
On 09/09/2021 22:36, dn via Python-list wrote:
> Even in fairly modest Python constructs, we quickly repeal the one-in,
> one-out philosophy because try...except operates by providing another
> exit-path.
Exceptions are exceptional by their nature (or should be!) As such
they can ar
are available?
In my experience of using Pascal (and much later with Delphi)
that I used repeat loops at least as often as while loops,
possibly more.
But using Python and to a lesser extent C (which has a
rather horrible do/while) construct I use while loops
(often with an if-break) simply because tha
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