Re: [Python-Dev] Windows: Remove support of bytes filenames in theos module?

Andrew Barnert via Python-Dev writes: > That doesn't mean the problem can't be solved. Apple solved their > equivalent problem, albeit by sacrificing backward compatibility in > a way Microsoft can't get away with. I haven't seen a MacRoman or > Shift-JIS filename since they broke the last

Re: [Python-Dev] Windows: Remove support of bytes filenames in theos module?

Victor Stinner writes: > It's annoying that 8 years after the release of Python 3.0, Python 3 > is still stuck by Python 2 :-( I prefer to think of it as the irritant that reminds me that I am very much alive, and so is Python, vibrantly so. ___

Re: [Python-Dev] Experiences with Creating PEP 484 Stub Files

On Wed, Feb 10, 2016 at 1:11 AM, Phil Thompson wrote: > I understand now. The documentation, as it stands, is correct and consistent > but (to me) the meaning of Optional is completely counter-intuitive. What you > suggest with str = ... is exactly what I need.

Re: [Python-Dev] Experiences with Creating PEP 484 Stub Files

On 10 Feb 2016, at 5:52 pm, Guido van Rossum wrote: > > On Wed, Feb 10, 2016 at 1:11 AM, Phil Thompson > wrote: >> I understand now. The documentation, as it stands, is correct and consistent >> but (to me) the meaning of Optional is completely

Re: [Python-Dev] Experiences with Creating PEP 484 Stub Files

On Wed, Feb 10, 2016 at 10:01 AM, Phil Thompson wrote: > On 10 Feb 2016, at 5:52 pm, Guido van Rossum wrote: [...] > That should do it, thanks. A followup question... > > Is... > > def foo(bar: str = Optional[str]) > > ...valid? In other words,

Re: [Python-Dev] Windows: Remove support of bytes filenames in theos module?

On Wednesday, February 10, 2016 6:50 AM, Stephen J. Turnbull wrote: > Andrew Barnert via Python-Dev writes: > >> That doesn't mean the problem can't be solved. Apple solved their >> equivalent problem, albeit by sacrificing backward compatibility in >> a way Microsoft

Re: [Python-Dev] PEP 515: Underscores in Numeric Literals

On Wed, 10 Feb 2016 at 14:21 Georg Brandl wrote: > This came up in python-ideas, and has met mostly positive comments, > although the exact syntax rules are up for discussion. > > cheers, > Georg > > >

[Python-Dev] why we have both re.match and re.string?

Hi, I hope the question is not too silly, but why I would like to understand the advantages of having both re.match() and re.search(). Wouldn't be more clear to have just one function with one additional parameters like this: re.search(regexp, text, from_beginning=True|False) ? In this way

[Python-Dev] PEP 515: Underscores in Numeric Literals

This came up in python-ideas, and has met mostly positive comments, although the exact syntax rules are up for discussion. cheers, Georg PEP: 515 Title: Underscores in Numeric Literals Version: $Revision$

Re: [Python-Dev] PEP 515: Underscores in Numeric Literals

On 2/10/2016 2:20 PM, Georg Brandl wrote: This came up in python-ideas, and has met mostly positive comments, although the exact syntax rules are up for discussion. cheers, Georg PEP: 515 Title: Underscores in

Re: [Python-Dev] PEP 515: Underscores in Numeric Literals

On 10 February 2016 at 22:20, Georg Brandl wrote: > This came up in python-ideas, and has met mostly positive comments, > although the exact syntax rules are up for discussion. +1 on the PEP. Is there any value in allowing underscores in strings passed to the Decimal

Re: [Python-Dev] why we have both re.match and re.string?

Hi, Le 10/02/2016 22:59, Luca Sangiacomo a écrit : Hi, I hope the question is not too silly, but why I would like to understand the advantages of having both re.match() and re.search(). Wouldn't be more clear to have just one function with one additional parameters like this:

Re: [Python-Dev] PEP 515: Underscores in Numeric Literals

On Wed, Feb 10, 2016 at 03:45:48PM -0800, Andrew Barnert via Python-Dev wrote: > On Feb 10, 2016, at 14:20, Georg Brandl wrote: > > First, general questions: should the PEP mention the Decimal constructor? > What about int and float (I'd assume int(s) continues to work as

Re: [Python-Dev] PEP 515: Underscores in Numeric Literals

On 02/11/2016 02:16 AM, Martin Panter wrote: > I have occasionally wondered about this missing feature. > > On 10 February 2016 at 22:20, Georg Brandl wrote: >> Abstract and Rationale >> == >> >> This PEP proposes to extend Python's syntax so that

Re: [Python-Dev] PEP 515: Underscores in Numeric Literals

On Feb 10, 2016, at 16:21, Steven D'Aprano wrote: > >> On Wed, Feb 10, 2016 at 03:45:48PM -0800, Andrew Barnert via Python-Dev >> wrote: >> On Feb 10, 2016, at 14:20, Georg Brandl wrote: >> >> First, general questions: should the PEP mention the Decimal

Re: [Python-Dev] PEP 515: Underscores in Numeric Literals

On 02/11/2016 12:45 AM, Andrew Barnert via Python-Dev wrote: > On Feb 10, 2016, at 14:20, Georg Brandl wrote: > > First, general questions: should the PEP mention the Decimal constructor? > What about int and float (I'd assume int(s) continues to work as always, > while int(s,

Re: [Python-Dev] PEP 515: Underscores in Numeric Literals

On 02/10/2016 11:35 PM, Brett Cannon wrote: >> Examples:: >> >> # grouping decimal numbers by thousands >> amount = 10_000_000.0 >> >> # grouping hexadecimal addresses by words >> addr = 0xDEAD_BEEF >> >> # grouping bits into bytes in a binary

Re: [Python-Dev] Windows: Remove support of bytes filenames in theos module?

On Wednesday, February 10, 2016 12:47 AM, Victor Stinner wrote: > > 2016-02-10 9:30 GMT+01:00 Paul Moore : >> Whether removing the bytes interface is feasible, given that there's >> then no way that works across Python 2 and 3 of writing code

Re: [Python-Dev] Windows: Remove support of bytes filenames in theos module?

Executive summary: Code pages and POSIX locales aren't solutions, they're the Original Sin. Steve Dower writes: > On 09Feb2016 2017, Stephen J. Turnbull wrote: > > > The problem here is the protocol that Python uses to return > > > bytes paths, and that protocol is inconsistent between

Re: [Python-Dev] Windows: Remove support of bytes filenames in theos module?

On Feb 9, 2016, at 20:17, Stephen J. Turnbull wrote: >> It really requires going through all the OS calls and either (a) making >> them consistently decode bytes to str using the declared FS encoding >> (currently 'mbcs', but I see no reason we can't make it 'utf_8'), > >

Re: [Python-Dev] Windows: Remove support of bytes filenames in theos module?

2016-02-10 11:18 GMT+01:00 Steven D'Aprano : > [steve@ando ~]$ python3.3 -c 'print(open(b"/tmp/abc\xD8\x01", "r").read())' > Hello World > > [steve@ando ~]$ python3.3 -c 'print(open("/tmp/abc\xD8\x01", "r").read())' > Traceback (most recent call last): > File "", line 1, in

Re: [Python-Dev] Windows: Remove support of bytes filenames in theos module?

On Wed, Feb 10, 2016 at 12:41:08PM +1100, Chris Angelico wrote: > On Wed, Feb 10, 2016 at 12:37 PM, Steve Dower wrote: > > I really don't like the idea of not being able to use bytes in cross > > platform code. Unless it's become feasible to use Unicode for lossless > >

Re: [Python-Dev] Windows: Remove support of bytes filenames in theos module?

On 10 February 2016 at 08:00, Stephen J. Turnbull wrote: >> The earlier issue was that that doesn't work (e.g. a bytes path > > from os.scandir couldn't be passed back into open()). > > My purely-from-the-user-side take is that that's just a bug in > os.scandir that should be

Re: [Python-Dev] Windows: Remove support of bytes filenames in theos module?

2016-02-10 9:30 GMT+01:00 Paul Moore : > Whether removing the bytes interface is feasible, given that there's > then no way that works across Python 2 and 3 of writing code that > manipulates the sort of bytes-that-use-multiple-encodings data that > you mention, is a separate

Re: [Python-Dev] Experiences with Creating PEP 484 Stub Files

> On 9 Feb 2016, at 11:48 pm, Guido van Rossum wrote: > > [Phil] I found the documentation confusing regarding Optional. Intuitively it seems to be the way to specify arguments with default values. However it is explained in terms of (for example) Union[str,

Re: [Python-Dev] Windows: Remove support of bytes filenames in theos module?

On 10 February 2016 at 08:45, Victor Stinner wrote: > 2016-02-10 9:30 GMT+01:00 Paul Moore : >> Whether removing the bytes interface is feasible, given that there's >> then no way that works across Python 2 and 3 of writing code that >> manipulates

Re: [Python-Dev] Windows: Remove support of bytes filenames in the os module?

On 08.02.16 16:32, Victor Stinner wrote: On Python 2, it wasn't possible to use Unicode for filenames, many functions fail badly with Unicode, especially when you mix bytes and Unicode. Even not all os functions support Unicode. See http://bugs.python.org/issue18695.

Re: [Python-Dev] Experiences with Creating PEP 484 Stub Files

On 10 February 2016 at 06:54, Guido van Rossum wrote: > [Just adding to Andrew's response] > > On Tue, Feb 9, 2016 at 9:58 AM, Andrew Barnert via Python-Dev > wrote: >> On Feb 9, 2016, at 03:44, Phil Thompson wrote: >>> >>>

Re: [Python-Dev] why we have both re.match and re.string?

On Wed, Feb 10, 2016 at 10:59:18PM +0100, Luca Sangiacomo wrote: > Hi, > I hope the question is not too silly, but why I would like to understand > the advantages of having both re.match() and re.search(). Wouldn't be > more clear to have just one function with one additional parameters like >

Re: [Python-Dev] PEP 515: Underscores in Numeric Literals

On Feb 10, 2016, at 14:20, Georg Brandl wrote: First, general questions: should the PEP mention the Decimal constructor? What about int and float (I'd assume int(s) continues to work as always, while int(s, 0) gets the new behavior, but if that isn't obviously true, it may be

Re: [Python-Dev] Windows: Remove support of bytes filenames in theos module?

On Feb 10, 2016, at 15:11, eryk sun wrote: > > On Wed, Feb 10, 2016 at 2:30 PM, Andrew Barnert via Python-Dev > wrote: >> [^3]: Say you write a program that assumes it will only be run on Shift-JIS >> systems, and you use >> CreateFileA to create a

[Python-Dev] Time for a change of random number generator?

The Mersenne Twister is no longer regarded as quite state-of-the art because it can get into states that produce long sequences that are not very random. There is a variation on MT called WELL that has better properties in this regard. Does anyone think it would be a good idea to replace MT with

Re: [Python-Dev] PEP 515: Underscores in Numeric Literals

It looks like the implementation https://bugs.python.org/issue26331 only changes the Python parser. What about other functions converting strings to numbers at runtime like int(str) and float(str)? Paul also asked for Decimal(str). Victor ___

Re: [Python-Dev] PEP 515: Underscores in Numeric Literals

On 2016-02-10 22:35, Brett Cannon wrote: [snip] Examples:: # grouping decimal numbers by thousands amount = 10_000_000.0 # grouping hexadecimal addresses by words addr = 0xDEAD_BEEF # grouping bits into bytes in a binary literal

Re: [Python-Dev] Windows: Remove support of bytes filenames in theos module?

On Wed, Feb 10, 2016 at 2:30 PM, Andrew Barnert via Python-Dev wrote: > [^3]: Say you write a program that assumes it will only be run on Shift-JIS > systems, and you use > CreateFileA to create a file named "ハローワールド". The actual bytes you're sending > are cp436 > for

Re: [Python-Dev] PEP 515: Underscores in Numeric Literals

On Wed, Feb 10, 2016 at 11:20:38PM +0100, Georg Brandl wrote: > This came up in python-ideas, and has met mostly positive comments, > although the exact syntax rules are up for discussion. Nicely done. But I would change the restrictions to a simpler version. Instead of five rules to learn: >

Re: [Python-Dev] PEP 515: Underscores in Numeric Literals

On 02/10/2016 04:04 PM, Steven D'Aprano wrote: > change to a single rule "one or more underscores may appear between > two (hex)digits, but otherwise nowhere else". That's much simpler to > understand than a series of restrictions as given above. I like the simpler rule, but I would also allow

Re: [Python-Dev] PEP 515: Underscores in Numeric Literals

On Wed, Feb 10, 2016 at 10:53:09PM +, Paul Moore wrote: > On 10 February 2016 at 22:20, Georg Brandl wrote: > > This came up in python-ideas, and has met mostly positive comments, > > although the exact syntax rules are up for discussion. > > +1 on the PEP. Is there any

Re: [Python-Dev] PEP 515: Underscores in Numeric Literals

I have occasionally wondered about this missing feature. On 10 February 2016 at 22:20, Georg Brandl wrote: > Abstract and Rationale > == > > This PEP proposes to extend Python's syntax so that underscores can be used in > integral and floating-point number