=adventistcare@python.org] On
Behalf Of Steven D'Aprano
Sent: Thursday, December 01, 2011 7:43 PM
To: python-list@python.org
Subject: Re: Using the Python Interpreter as a Reference
On Thu, 01 Dec 2011 10:03:53 -0800, DevPlayer wrote:
[...]
Well, that may be a little hyperbolic. But with 2 spaces you
In my opinion, if your code is indented four or more levels, you should
start to think about refactorising your code; if you reach six levels,
your code is probably a mess.
Here's some code I encountered while grading assignments from
first-year CS students:
if 'not' in temp_holder:
On Nov 29, 3:04 am, Steven D'Aprano steve
+comp.lang.pyt...@pearwood.info wrote:
On Tue, 29 Nov 2011 12:49:49 +1100, Chris Angelico wrote:
On Tue, Nov 29, 2011 at 11:54 AM, DevPlayer devpla...@gmail.com wrote:
To me, I would think the interpreter finding the coder's intended
indent wouldn't
On Thu, 01 Dec 2011 10:03:53 -0800, DevPlayer wrote:
[...]
Well, that may be a little hyperbolic. But with 2 spaces you can
encourage coders to get very deep, indentially, and still fit 80 chars.
Why would you want to encourage coders to write deeply indented code?
In my opinion, if your code
On Fri, Dec 2, 2011 at 11:43 AM, Steven D'Aprano
steve+comp.lang.pyt...@pearwood.info wrote:
Why would you want to encourage coders to write deeply indented code?
In my opinion, if your code is indented four or more levels, you should
start to think about refactorising your code; if you reach
On Tue, 29 Nov 2011 12:49:49 +1100, Chris Angelico wrote:
On Tue, Nov 29, 2011 at 11:54 AM, DevPlayer devpla...@gmail.com wrote:
To me, I would think the interpreter finding the coder's intended
indent wouldn't be that hard. And just make the need for consistant
spaces or tabs irrevelent
On Tue, 29 Nov 2011 13:57:32 +1100, Chris Angelico wrote:
I'm inclined toward an alternative: explicit recursion. Either a
different syntax, or a special-case on the use of the function's own
name, but whichever syntax you use, it compiles in a recurse opcode.
That way, if name bindings
On 11/29/2011 03:12 AM, Steven D'Aprano wrote:
On Tue, 29 Nov 2011 13:57:32 +1100, Chris Angelico wrote:
I'm inclined toward an alternative: explicit recursion. Either a
different syntax, or a special-case on the use of the function's own
name, but whichever syntax you use, it compiles in a
On Nov 27, 6:55 pm, Steven D'Aprano steve
+comp.lang.pyt...@pearwood.info wrote:
On Sun, 27 Nov 2011 14:21:01 -0800, Travis Parks wrote:
Personally, I find a lot of good things in Python. I thinking tabs are
out-of-date. Even the MAKE community wishes that the need for tabs would
go away
On Sun, Nov 27, 2011 at 4:55 PM, Steven D'Aprano
steve+comp.lang.pyt...@pearwood.info wrote:
My language combines generators and collection initializers, instead of
creating a whole new syntax for comprehensions.
[| for i in 0..10: for j in 0.10: yield return i * j |]
Are we supposed to
On 2011-11-28, Ian Kelly ian.g.ke...@gmail.com wrote:
I think the implication is that Unit has only one syntax for
creating functions, which is lambda-style. In any case, why
does Python require a special keyword? def is only used in a
statement context, and lambda is only used in an
Travis Parks wrote:
I thinking tabs are
out-of-date. Even the MAKE community wishes that the need for tabs
would go away
The situation with make is a bit different, because it
*requires* tabs in certain places -- spaces won't do.
Python lets you choose which to use as long as you don't
mix
Neil Cerutti wrote:
I've always held with the anti-functional style conspiracy
interpretation of Python's lambda expressions. They were added
but grudgingingly, made weak on purpose to discourage their use.
Seems to me that Python's lambdas are about as powerful
as they can be given the
Hello all,
My python runs and crashes after another run. I am getting errors like
Microsoft Visual C++ Runtime Library
program c:\Python27\pythonw.exe
This application has requested the Runtime to terminate it in an usuak way.
Please contact the application's support team for more information.
On 2011-11-28, Gregory Ewing greg.ew...@canterbury.ac.nz wrote:
Neil Cerutti wrote:
I've always held with the anti-functional style conspiracy
interpretation of Python's lambda expressions. They were added
but grudgingingly, made weak on purpose to discourage their
use.
Seems to me that
On Nov 28, 2:32 pm, Ian Kelly ian.g.ke...@gmail.com wrote:
On Sun, Nov 27, 2011 at 4:55 PM, Steven D'Aprano
steve+comp.lang.pyt...@pearwood.info wrote:
My language combines generators and collection initializers, instead of
creating a whole new syntax for comprehensions.
[| for i in
On Nov 28, 3:40 pm, Gregory Ewing greg.ew...@canterbury.ac.nz wrote:
Travis Parks wrote:
I thinking tabs are
out-of-date. Even the MAKE community wishes that the need for tabs
would go away
The situation with make is a bit different, because it
*requires* tabs in certain places -- spaces
On Tue, Nov 29, 2011 at 8:29 AM, Travis Parks jehugalea...@gmail.com wrote:
Languages that don't support
exceptions as part of their signature lead to capturing generic
Exception all throughout code. It is one of those features I wish .NET
had. At the same time, with my limited experience with
On Mon, 28 Nov 2011 12:32:59 -0700, Ian Kelly wrote:
On Sun, Nov 27, 2011 at 4:55 PM, Steven D'Aprano
steve+comp.lang.pyt...@pearwood.info wrote:
[...]
Lambdas and functions are the same thing in my language, so no need
for a special keyword.
That does not follow. Lambdas and def functions
On Tue, Nov 29, 2011 at 9:24 AM, Steven D'Aprano
steve+comp.lang.pyt...@pearwood.info wrote:
Because the syntax is completely different. One is a statement, and
stands alone, the other is an expression. Even putting aside the fact
that lambda's body is an expression, and a def's body is a
On Mon, 28 Nov 2011 13:29:06 -0800, Travis Parks wrote:
Exception handling is one of those subjects few understand and fewer can
implement properly in modern code. Languages that don't support
exceptions as part of their signature lead to capturing generic
Exception all throughout code. It is
On Nov 27, 6:55 pm, Steven D'Aprano steve
+comp.lang.pyt...@pearwood.info wrote:
On Sun, 27 Nov 2011 14:21:01 -0800, Travis Parks wrote:
Personally, I find a lot of good things in Python. I thinking tabs are
out-of-date. Even the MAKE community wishes that the need for tabs would
go away
I do not understand why the interpreter preprocesses each logical line
of source code using something as simple as this:
correction:
I do not understand why the interpreter - does not- preprocess each
logical line
of source code using something as simple as this:
--
On Tue, Nov 29, 2011 at 11:54 AM, DevPlayer devpla...@gmail.com wrote:
To me, I would think the interpreter finding the coder's intended
indent wouldn't be that hard. And just make the need for consistant
spaces or tabs irrevelent simply by reformatting the indent as
expected. Pretty much all
On Nov 28, 5:24 pm, Steven D'Aprano steve
+comp.lang.pyt...@pearwood.info wrote:
On Mon, 28 Nov 2011 12:32:59 -0700, Ian Kelly wrote:
On Sun, Nov 27, 2011 at 4:55 PM, Steven D'Aprano
steve+comp.lang.pyt...@pearwood.info wrote:
[...]
Lambdas and functions are the same thing in my language,
On Tue, Nov 29, 2011 at 1:42 PM, Travis Parks jehugalea...@gmail.com wrote:
A good example I have run into is recursion. When a local function
calls itself, the name of the function may not be part of scope (non-
local). Languages that support tail-end recursion optimization can't
optimize. In
On Nov 28, 8:49 pm, Chris Angelico ros...@gmail.com wrote:
On Tue, Nov 29, 2011 at 11:54 AM, DevPlayer devpla...@gmail.com wrote:
To me, I would think the interpreter finding the coder's intended
indent wouldn't be that hard. And just make the need for consistant
spaces or tabs irrevelent
On Nov 28, 5:57 pm, Steven D'Aprano steve
+comp.lang.pyt...@pearwood.info wrote:
On Mon, 28 Nov 2011 13:29:06 -0800, Travis Parks wrote:
Exception handling is one of those subjects few understand and fewer can
implement properly in modern code. Languages that don't support
exceptions as
On Mon, Nov 28, 2011 at 7:42 PM, Travis Parks jehugalea...@gmail.com wrote:
I find that interesting. I also find it interesting that the common
functional methods (all, any, map, filter) are basically built into
Python core language. That is unusual for most imperative programming
languages
On Nov 26, 1:53 pm, Rick Johnson rantingrickjohn...@gmail.com wrote:
On Nov 20, 6:46 pm, Travis Parks jehugalea...@gmail.com wrote:
Hello:
I am currently working on designing a new programming language. It is
a compiled language, but I still want to use Python as a reference.
Python has
On Sun, 27 Nov 2011 14:21:01 -0800, Travis Parks wrote:
On Nov 26, 1:53 pm, Rick Johnson rantingrickjohn...@gmail.com wrote:
On Nov 20, 6:46 pm, Travis Parks jehugalea...@gmail.com wrote:
Hello:
I am currently working on designing a new programming language. It is
a compiled language,
On Sun, 27 Nov 2011 14:21:01 -0800, Travis Parks wrote:
Personally, I find a lot of good things in Python. I thinking tabs are
out-of-date. Even the MAKE community wishes that the need for tabs would
go away and many implementations have done just that.
Tabs have every theoretical advantage
On Mon, Nov 28, 2011 at 10:55 AM, Steven D'Aprano
steve+comp.lang.pyt...@pearwood.info wrote:
What does it mean to say that a language is small?
A Turing Machine is a pretty small language, with only a few
instructions: step forward, step backwards, erase a cell, write a cell,
branch on the
http://pyjs.org/
On Sat, Nov 26, 2011 at 3:22 PM, Sells, Fred
fred.se...@adventistcare.org wrote:
I'm looking at a variation on this theme. I currently use
Flex/ActionScript for client side work, but there is pressure to move
toward HTML5+Javascript and or iOS. Since I'm an old hand at
Consider implementing OOP, reflection and implement in HLA or C
=]
On Mon, Nov 21, 2011 at 11:46 AM, Travis Parks jehugalea...@gmail.com wrote:
Hello:
I am currently working on designing a new programming language. It is
a compiled language, but I still want to use Python as a reference.
On Nov 20, 6:46 pm, Travis Parks jehugalea...@gmail.com wrote:
Hello:
I am currently working on designing a new programming language. It is
a compiled language, but I still want to use Python as a reference.
Python has a lot of similarities to my language, such as indentation
for code
On Sun, Nov 27, 2011 at 5:53 AM, Rick Johnson
rantingrickjohn...@gmail.com wrote:
I hope you meant to say *forced* indention for code blocks! Forced
being the key word here. What about tabs over spaces, have you decided
the worth of one over the other or are you going to repeat Guido's
folly?
On Nov 26, 1:34 pm, Chris Angelico ros...@gmail.com wrote:
On Sun, Nov 27, 2011 at 5:53 AM, Rick Johnson
rantingrickjohn...@gmail.com wrote:
I hope you meant to say *forced* indention for code blocks! Forced
being the key word here. What about tabs over spaces, have you decided
the worth
On Nov 22, 1:37 pm, Alan Meyer amey...@yahoo.com wrote:
On 11/20/2011 7:46 PM, Travis Parks wrote:
Hello:
I am currently working on designing a new programming language. ...
I have great respect for people who take on projects like this.
Your chances of popularizing the language are
On Fri, Nov 25, 2011 at 9:55 PM, Travis Parks jehugalea...@gmail.com wrote:
I have been thinking about compiling into a
language like C++ or C instead of assembler for my first time through.
Yep, or any other language you feel like using as an intermediate. Or
alternatively, just start with an
On Nov 21, 5:46 am, Travis Parks jehugalea...@gmail.com wrote:
Hello:
I am currently working on designing a new programming language. It is
a compiled language, but I still want to use Python as a reference.
Python has a lot of similarities to my language, such as indentation
for code
I'm looking at a variation on this theme. I currently use
Flex/ActionScript for client side work, but there is pressure to move
toward HTML5+Javascript and or iOS. Since I'm an old hand at Python, I
was wondering if there is a way to use it to model client side logic,
then generate the
On 11/20/2011 7:46 PM, Travis Parks wrote:
Hello:
I am currently working on designing a new programming language. ...
I have great respect for people who take on projects like this.
Your chances of popularizing the language are small. There must be
thousands of projects like this for every
On Nov 21, 12:44 am, Steven D'Aprano steve
+comp.lang.pyt...@pearwood.info wrote:
On Mon, 21 Nov 2011 13:33:21 +1100, Chris Angelico wrote:
What's your language's special feature? I like to keep track of
languages using a slug - a simple one-sentence (or less) statement of
when it's right
Hello:
I am currently working on designing a new programming language. It is
a compiled language, but I still want to use Python as a reference.
Python has a lot of similarities to my language, such as indentation
for code blocks, lambdas, non-locals and my language will partially
support dynamic
On Mon, Nov 21, 2011 at 11:46 AM, Travis Parks jehugalea...@gmail.com wrote:
I am currently working on designing a new programming language. It is
a compiled language, but I still want to use Python as a reference.
Python has a lot of similarities to my language, such as indentation
for code
On Sun, Nov 20, 2011 at 4:46 PM, Travis Parks jehugalea...@gmail.comwrote:
Hello:
I am currently working on designing a new programming language. It is
a compiled language, but I still want to use Python as a reference.
Python has a lot of similarities to my language, such as indentation
On Mon, 21 Nov 2011 13:33:21 +1100, Chris Angelico wrote:
What's your language's special feature? I like to keep track of
languages using a slug - a simple one-sentence (or less) statement of
when it's right to use this language above others. For example, Python
is optimized for 'rapid
On Mon, Nov 21, 2011 at 4:44 PM, Steven D'Aprano
steve+comp.lang.pyt...@pearwood.info wrote:
On Mon, 21 Nov 2011 13:33:21 +1100, Chris Angelico wrote:
What's your language's special feature? I like to keep track of
languages using a slug - a simple one-sentence (or less) statement of
when
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