On Fri, 19 Aug 2016 02:30 am, Chris Angelico wrote:
> On Fri, Aug 19, 2016 at 2:21 AM, Marko Rauhamaa wrote:
>>
>> Yeah, I believe truly conscious machines will arise without being
>> designed through technological evolution. First they'll develop
>> electronics that can simulate brain cells; the
On Thu, 18 Aug 2016 10:58 pm, ast wrote:
> Hello
>
> I wonder why calling a method on an integer
> doesn't work ?
>
123.bit_length()
> SyntaxError: invalid syntax
Because Python thinks you are writing a float, and "b" is not a valid digit.
Try:
(123).bit_length()
123 .bit_length()
i
Chris Angelico wrote:
If you're specifying them formally, you're probably coding them. Any
form sufficiently well-defined for a program to analyze is basically
code already.
Yes, I think that once a specification language crosses
a certain threshold of complexity, it becomes just as
difficult t
Chris Angelico wrote:
You can't get a program to program itself. That's called the
Singularity [1], and depending on your point of view, it's either
still in the future, or fundamentally impossible.
Quite likely it's provably impossible. A computer that
can program itself for anything you might
On Fri, 19 Aug 2016 11:43 am, meInvent bbird wrote:
> a company which write siri in iphone, has already wrote a program
> which can write program itself after the program talks with users
>
> it seems possible,
You are asking about self-modifying code, which is a terrible idea.
Siri uses machin
On Friday, August 19, 2016 at 5:37:32 AM UTC+8, Lawrence D’Oliveiro wrote:
> On Friday, August 19, 2016 at 3:10:26 AM UTC+12, Chris Angelico wrote:
> > What the OP was looking for was "I want my program to be able to debug
> > itself". That means the program has to be smart enough to figure out
> >
On Friday, August 19, 2016 at 3:10:26 AM UTC+12, Chris Angelico wrote:
> What the OP was looking for was "I want my program to be able to debug
> itself". That means the program has to be smart enough to figure out
> its own problems.
Maybe it is, it just doesn’t agree with you on what those probl
On Friday, August 19, 2016 at 12:59:09 AM UTC+12, ast wrote:
> I wonder why calling a method on an integer
> doesn't work ?
Sure it does.
>>> 2 + 5
7
>>> (2).__add__(5)
7
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https://mail.python.org/mailman/listinfo/python-list
MRAB writes:
> On 2016-08-18 10:46, Jussi Piitulainen wrote:
>> Marko Rauhamaa writes:
>>
>>> Jussi Piitulainen wrote:
>>>
That looks a bit funny if the "keyword" does not look like a word,
but then programming languages do look funny, so why not:
(c ? t : e) # ?-expression
On Fri, Aug 19, 2016 at 3:00 AM, Terry Reedy wrote:
> On 8/18/2016 5:32 AM, Steven D'Aprano wrote:
>
>>> Beginners often do not understand that the body of a lambda expression
>>> is evaluated in a new local namespace, and only when the resulting
>>> function is called, the same as with a def stat
On 8/18/2016 5:32 AM, Steven D'Aprano wrote:
Beginners often do not understand that the body of a lambda expression
is evaluated in a new local namespace, and only when the resulting
function is called, the same as with a def statement. They then neglect
to capture current values when writing l
On Fri, Aug 19, 2016 at 2:21 AM, Marko Rauhamaa wrote:
>
> Yeah, I believe truly conscious machines will arise without being
> designed through technological evolution. First they'll develop
> electronics that can simulate brain cells; the clumsy gadgets will be
> used to replaced cells damaged by
Chris Angelico :
> On Fri, Aug 19, 2016 at 1:28 AM, Marko Rauhamaa wrote:
>> What is needed is an automated methodology to derive algorithmic
>> solutions to formally specified features. Since there are only a
>> handful of tools in a programmer's toolbox, that objective doesn't
>> seem at all im
On Thu, Aug 18, 2016 at 10:02 AM, Gene Heskett wrote:
> On Thursday 18 August 2016 07:28:06 Chris Angelico wrote:
>
>> On Thu, Aug 18, 2016 at 7:55 PM, meInvent bbird
> wrote:
>> > actually i would like to remove try except code in all function
>> >
>> > and i feel that try except code for a larg
On Fri, Aug 19, 2016 at 1:28 AM, Marko Rauhamaa wrote:
> What is needed is an automated methodology to derive algorithmic
> solutions to formally specified features. Since there are only a handful
> of tools in a programmer's toolbox, that objective doesn't seem at all
> impossible. The big questi
Chris Angelico :
> What the OP was looking for was "I want my program to be able to debug
> itself". That means the program has to be smart enough to figure out
> its own problems. Self-modifying code isn't anywhere near that level
> of intelligence.
You are right that we're not nearly there yet (
On Fri, Aug 19, 2016 at 12:02 AM, Gene Heskett wrote:
> On Thursday 18 August 2016 07:28:06 Chris Angelico wrote:
>
>> On Thu, Aug 18, 2016 at 7:55 PM, meInvent bbird
> wrote:
>> > and i feel that try except code for a large block code can not
>> > show which function name , which line number err
On Thursday 18 August 2016 07:28:06 Chris Angelico wrote:
> On Thu, Aug 18, 2016 at 7:55 PM, meInvent bbird
wrote:
> > actually i would like to remove try except code in all function
> >
> > and i feel that try except code for a large block code can not
> > show which function name , which line
On 2016-08-18 14:10, GP wrote:
On Thursday, August 18, 2016 at 5:59:43 PM UTC+5:30, Peter Otten wrote:
GP wrote:
[snip]
However, when you really want to remove all items you instead assign a new
empty list
for item in items:
print(item)
items = []
Thanks Peter for the information. It
On 2016-08-18 10:46, Jussi Piitulainen wrote:
Marko Rauhamaa writes:
Jussi Piitulainen wrote:
That looks a bit funny if the "keyword" does not look like a word,
but then programming languages do look funny, so why not:
(c ? t : e) # ?-expression
(c -> t, e) # ->-expression
That sh
On 18/08/2016 14:01, Marko Rauhamaa wrote:
"ast" :
123.bit_length()
SyntaxError: invalid syntax
I fell into that trap myself.
CPython's lexical analyzer can't handle a dot after an integer literal
so you must add a space in between "123" and ".".
Or use (123).bit_length() which looks slig
On Thursday, August 18, 2016 at 5:59:43 PM UTC+5:30, Peter Otten wrote:
> GP wrote:
>
> The error and your second snippet aren't compatible, so I assume the
> exception is raised by
>
> > for k in range(0,len(shelf)):
> > q1=ListDictItem[k]
> > q2 = ListDictItem.pop(k) #deletes the i
CPython's lexical analyzer can't handle a dot after an integer literal
so you must add a space in between "123" and ".".
Ok, this works:
>>> 123 .bit_length()
7
But it looks really strange. Let's use a variable instead of an integer
literal.
Lutz
--
https://mail.python.org/mailman/listinfo/
"Marko Rauhamaa" a écrit dans le message de
news:87k2fefcyu@elektro.pacujo.net...
"ast" :
123.bit_length()
SyntaxError: invalid syntax
I fell into that trap myself.
CPython's lexical analyzer can't handle a dot after an integer literal
so you must add a space in between "123" and "."
Am 08/18/2016 um 02:58 PM schrieb ast:
123.bit_length()
SyntaxError: invalid syntax
You are not calling a method here because the parser is not finished.
The parser thinks you want to write a float with the value 1.bit_length
which is not valid Python syntax.
Lutz
--
https://mail.python.or
Hi,
On Thu, Aug 18, 2016 at 8:58 AM, ast wrote:
> Hello
>
> I wonder why calling a method on an integer
> doesn't work ?
123 is not an integer. Its an integer constant. ;-)
Thank you.
>
123.bit_length()
>
> SyntaxError: invalid syntax
>
123.to_bytes(3, 'big')
>
> SyntaxError: invalid
"ast" :
123.bit_length()
> SyntaxError: invalid syntax
I fell into that trap myself.
CPython's lexical analyzer can't handle a dot after an integer literal
so you must add a space in between "123" and ".".
Marko
--
https://mail.python.org/mailman/listinfo/python-list
Hello
I wonder why calling a method on an integer
doesn't work ?
123.bit_length()
SyntaxError: invalid syntax
123.to_bytes(3, 'big')
SyntaxError: invalid syntax
but it works with a variable
i = 123
i.bit_length()
7
i=123
i.to_bytes(3, 'big')
b'\x00\x00{'
I am working with pyhton 3.5
Chris Angelico :
> Folks, read the whole thread before posting :)
Corollary:
Folks, start a new thread before posting :)
Marko
--
https://mail.python.org/mailman/listinfo/python-list
Release Highlights:
---
* **Important** PyDev now requires Java 8 and Eclipse 4.5 onwards.
* PyDev 4.5.5 is the last release supporting Java 7 and Eclipse 3.8.
* See: `update sites page`_ for the update site of older versions of
PyDev.
* See: the **PyDev do
GP wrote:
The error and your second snippet aren't compatible, so I assume the
exception is raised by
> for k in range(0,len(shelf)):
> q1=ListDictItem[k]
> q2 = ListDictItem.pop(k) #deletes the items that are packed.
> Error message:Traceback (most recent call last):
> File "C:\P
I have a list dictionary of items:
ListDictItem = [ {'Item No': 1,'Weight':610,'Quantity':2},{'Item No':
2,'Weight':610,'Quantity':2},{'Item No': 3,'Weight':500,'Quantity':2},{'Item
No': 4,'Weight':484,'Quantity':2},{'Item No':
5,'Weight':470,'Quantity':2},{'Item No': 6,'Weight':440,'Quantity
On Thu, Aug 18, 2016 at 7:32 PM, Steven D'Aprano
wrote:
> So I don't see any
> benefit over this:
>
> for section_name, line_number in text.parser.toc:
> drop.add_command(label=section_name, command=lambda
> line=line_number: text.yview(line))
>
On Thu, Aug 18, 2016 at 7:55 PM, meInvent bbird wrote:
> actually i would like to remove try except code in all function
>
> and i feel that try except code for a large block code can not
> show which function name , which line number error,
> if use try except for specified code block to show whe
Tell me, do you know how can i send CTRl+C command from python to
terminate this external shell script ?
os.system[1] is not an asynchronous function. It returns as soon as the
called command terminates, not earlier.
If you want to execute a command in a subprocess, use
subprocess.Popen[2].
Steven D'Aprano wrote:
> On Thursday 18 August 2016 06:25, Terry Reedy wrote:
> Sure. But since the behaviour of def functions and lambda functions are
> identical, writing a named def won't solve that problem.
>
>
>> for section_name, line_number in text.parser.toc:
>> de
On 08/18/2016 11:16 AM, Lawrence D’Oliveiro wrote:
On Thursday, August 18, 2016 at 8:00:51 PM UTC+12, gm wrote:
os.system("python /home/pi/test/testserver.sh") command
How to run shell ( not python ) script, from python code ?
Take out the “python” from the command.
:-) Damn :-). Thank you
actually i would like to remove try except code in all function
and i feel that try except code for a large block code can not
show which function name , which line number error,
if use try except for specified code block to show where it has error
it will have many ugly try except code and need
Marko Rauhamaa writes:
> Jussi Piitulainen wrote:
>
>> That looks a bit funny if the "keyword" does not look like a word,
>> but then programming languages do look funny, so why not:
>>
>>(c ? t : e) # ?-expression
>>
>>(c -> t, e) # ->-expression
>
> That ship has already sailed.
Sorry
On Thursday 18 August 2016 06:25, Terry Reedy wrote:
> On 8/17/2016 2:07 AM, Steven D'Aprano wrote:
>
>> I realise that there are occasions where we might deliberate choose to
>> assign an intermediate value to its own variable, but all else being equal,
>> which would you prefer?
>>
>> #A
>> ali
Jussi Piitulainen :
> That looks a bit funny if the "keyword" does not look like a word, but
> then programming languages do look funny, so why not:
>
>(c ? t : e) # ?-expression
>
>(c -> t, e) # ->-expression
That ship has already sailed.
Marko
--
https://mail.python.org/mailman/lis
On Thursday, August 18, 2016 at 8:00:51 PM UTC+12, gm wrote:
> os.system("python /home/pi/test/testserver.sh") command
>
> How to run shell ( not python ) script, from python code ?
Take out the “python” from the command.
--
https://mail.python.org/mailman/listinfo/python-list
Am 14.08.2016 um 13:06 schrieb ast:
[snip]
Thanks. The use of id() is very helpful in clarifying
what acutally happens in the present case.
M. K. Shen
--
https://mail.python.org/mailman/listinfo/python-list
Lawrence D’Oliveiro writes:
> On Thursday, August 18, 2016 at 7:22:50 PM UTC+12, Jussi Piitulainen wrote:
>> But please consider calling them conditional expressions.
>
> And don’t forget switch-expressions, or case-expressions, as some
> other advanced languages have had. Which my article showed
On Thursday, August 18, 2016 at 7:22:50 PM UTC+12, Jussi Piitulainen wrote:
> But please consider calling them conditional expressions.
And don’t forget switch-expressions, or case-expressions, as some other
advanced languages have had. Which my article showed how to do in Python.
--
https://mai
On Thu, Aug 18, 2016 at 5:44 PM, meInvent bbird wrote:
> if i use
>
> result = ""
> before try
> and return result at the end
>
> as return of function can be any type
>
> there will be type mismatch
>
> how to return the result of func ?
If it raises an exception, it *does not have* a return val
if i use
result = ""
before try
and return result at the end
as return of function can be any type
there will be type mismatch
how to return the result of func ?
On Thursday, August 18, 2016 at 3:18:31 PM UTC+8, Chris Angelico wrote:
> On Thu, Aug 18, 2016 at 5:14 PM, Peter Otten <__pete...@
On Thursday 18 August 2016 03:29, Michael Selik wrote:
>> You might find this https://glyph.twistedmatrix.com/2016/08/attrs.html an
>> interesting read.
>>
>
> I disagree with a few points from that blog post.
>
> 1. I don't mind typing so much. I like to be explicit. The attrs library
> uses so
meInvent bbird wrote:
> would like to check errors for every function i run,
> got error type lookuperror
>
> def checkexception(func, **kwargs):
> try:
> result = func(*tuple(value for _, value in kwargs.iteritems()))
You are turning keyword arguments into positional arguments. The
Terry Reedy writes:
> On 8/17/2016 2:39 AM, Steven D'Aprano wrote:
[- -]
>> Because the C syntax is horrifically ugly, whereas the Python syntax
>> is very close to real English syntax.
>>
>> "What will you do tonight?"
>>
>> "Go to the movies, if I finish work on time, otherwise just go home."
>
On Thu, Aug 18, 2016 at 5:14 PM, Peter Otten <__pete...@web.de> wrote:
> meInvent bbird wrote:
>
>> when try keystone_client.tenants.get
>> got error,
>>
>> isn't this method for all kinds of function?
>>
> m = "4c9a0da00b904422a23341e35be7f8d7"
> ten = checkexception(keystone_client.tenant
meInvent bbird wrote:
> when try keystone_client.tenants.get
> got error,
>
> isn't this method for all kinds of function?
>
m = "4c9a0da00b904422a23341e35be7f8d7"
ten = checkexception(keystone_client.tenants.get,
tenant_id=checkexception(m.encode,encoding='ascii',errors='ignore')
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