Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 23.11.2017 08:38, Ivan Levkivskyi wrote: I think this code should be just equivalent to this code     def g():     temp = [(yield i) for i in range(10)]     return (v for v in temp) Semantics of the comprehension should be clear here (just an equivalent for-loop without name

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 23 November 2017 at 05:44, Greg Ewing wrote: > Ivan Levkivskyi wrote: > >> The key idea is that neither comprehensions nor generator expressions >> should create a function scope surrounding the `expr` >> > > I don't see how you can avoid an implicit function

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 23 November 2017 at 01:00, Yury Selivanov wrote: > On Wed, Nov 22, 2017 at 6:46 PM, Ivan Levkivskyi > wrote: > [..] > > Just found another example of intuitive behaviour: > > > async def f(): > > ... for i in range(3): > > ...

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 11/22/2017 07:00 PM, Yury Selivanov wrote: > I wouldn't say that it's obvious to anyone... > > I think this thread has started to discuss the use of 'yield' > expression in comprehensions, and the outcome of the discussion is > that everyone thinks that we should deprecate that syntax in 3.7,

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

Greg Ewing writes: > Consider this: > > def g(): >return ((yield i) for i in range(10)) > > Presumably the yield should turn g into a generator, but... > then what? My brain is hurting trying to figure out what > it should do. I don't understand why you presume that. The

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 23 November 2017 at 15:33, Stephen J. Turnbull < turnbull.stephen...@u.tsukuba.ac.jp> wrote: > However, my model of comprehensions is exactly a for loop that appends > to an empty list repeatedly, but doesn't leak iteration variables. Not since Python 3.0. Instead, they create a nested

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

Paul Moore writes: > 1. List comprehensions expand into nested for/if statements in the > "obvious" way - with an empty list created to start and append used to > add items to it. >1a. Variables introduced in the comprehension don't "leak" (see below). > 2. Generator expressions expand

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On Thu, Nov 23, 2017 at 3:36 PM, Greg Ewing wrote: > Paul Moore wrote: >> >> 3. List comprehensions are the same as list(the equivalent generator >> expression). > > > I don't think that's ever been quite true -- there have > always been odd cases such as what happens

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 23 November 2017 at 14:36, Greg Ewing wrote: > Paul Moore wrote: > >> 3. List comprehensions are the same as list(the equivalent generator >> expression). >> > > I don't think that's ever been quite true -- there have > always been odd cases such as what happens

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

Ivan Levkivskyi wrote: The key idea is that neither comprehensions nor generator expressions should create a function scope surrounding the `expr` I don't see how you can avoid an implicit function scope in the case of a generator expression, though. And I can't see how to make yield in a

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

Paul Moore wrote: 3. List comprehensions are the same as list(the equivalent generator expression). I don't think that's ever been quite true -- there have always been odd cases such as what happens if you raise StopIteration in list(generator_expression). To my mind, these equivalences have

Re: [Python-Dev] Python initialization and embedded Python

On 22 November 2017 at 21:12, Victor Stinner wrote: > 2017-11-22 12:04 GMT+01:00 Antoine Pitrou : > > IMHO this really needs a simple solution documented somewhere. Also, > > hopefully when you do the wrong thing, you get a clear error message to >

Re: [Python-Dev] PEP 559 - built-in noop()

Aha, contextlib.nullcontext() was just added, cool! https://github.com/python/cpython/commit/0784a2e5b174d2dbf7b144d480559e650c5cf64c https://bugs.python.org/issue10049 Victor 2017-09-09 21:54 GMT+02:00 Victor Stinner : > I always wanted this feature (no kidding). > >

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 11/22/2017 01:40 PM, Ivan Levkivskyi wrote: 22 Лис 2017 22:33 "Ethan Furman" > пише: Right, the argument is that calling the `list` constructor should return a list -- not a database proxy, not a web page, and not a generator. Then you

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On Wed, Nov 22, 2017 at 6:46 PM, Ivan Levkivskyi wrote: [..] > Just found another example of intuitive behaviour: > async def f(): > ... for i in range(3): > ... yield i > ... async def g(): > ... return [(yield i) async for i in f()] > ...

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 22 November 2017 at 21:07, Yury Selivanov wrote: > On Wed, Nov 22, 2017 at 2:37 PM, Ivan Levkivskyi > wrote: > > On 22 November 2017 at 20:33, Guido van Rossum wrote: > >> > >> On Wed, Nov 22, 2017 at 11:12 AM, Ivan Levkivskyi

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

Paul Moore wrote: At the moment, I know I tend to treat Python semantics as I always did, but with an implicit proviso, "unless async is involved, when I can't assume any of my intuitions apply". That's *not* a good situation to be in. It's disappointing that PEP 3152 was rejected, because I

Re: [Python-Dev] Script bootstrapping executables on Windows

Hi, I hope that what follows will be useful for other people: after stepping through code for a few hours this morning, I ended up finding the location of the boostrapping executable. It (they) actually ship with setuptools, e.g. C:\Python27\Lib\site-packages\setuptools\cli-64.exe and get copied

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

Ivan Levkivskyi wrote: while `g = list((yield i) for i in range(3))` is defined as this code: def __gen(): for i in range(3): yield (yield i) g = list(__gen()) Since this is almost certainly not what was intended, I think that 'yield' inside a generator expression

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

22 Лис 2017 22:33 "Ethan Furman" пише: On 11/22/2017 01:25 PM, Ivan Levkivskyi wrote: > 22 Лис 2017 22:19 "Ethan Furman" пише: > Whether it's inside or outside a function should be irrelevant -- a >> comprehension / generator expression should have >> no influence on the

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 11/22/2017 01:25 PM, Ivan Levkivskyi wrote: 22 Лис 2017 22:19 "Ethan Furman" пише: Whether it's inside or outside a function should be irrelevant -- a comprehension / generator expression should have no influence on the type of the resulting function (and at least synchronous

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

22 Лис 2017 22:19 "Ethan Furman" пише: On 11/22/2017 11:01 AM, Ivan Levkivskyi wrote: I think how to formulate these rules more "precisely" so that they will be > all consistent even if there is a > `yield` inside. > The key idea is that neither comprehensions nor generator

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 11/22/2017 11:01 AM, Ivan Levkivskyi wrote: I think how to formulate these rules more "precisely" so that they will be all consistent even if there is a `yield` inside. The key idea is that neither comprehensions nor generator expressions should create a function scope surrounding the

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

Isn't yield like a return? A return in a list/dict/set comprehension makes no sense to me. So, +1 on SyntaxError from me too. Cheers. On 22.11.2017 21:29, David Mertz wrote: Inasmuch as I get to opine, I'm +1 on SyntaxError. There is no behavior for that spelling that I would find intuitive

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

Inasmuch as I get to opine, I'm +1 on SyntaxError. There is no behavior for that spelling that I would find intuitive or easy to explain to students. And as far as I can tell, the ONLY time anything has ever been spelled that way is in comments saying "look at this weird edge case behavior in

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On Wed, Nov 22, 2017 at 2:37 PM, Ivan Levkivskyi wrote: > On 22 November 2017 at 20:33, Guido van Rossum wrote: >> >> On Wed, Nov 22, 2017 at 11:12 AM, Ivan Levkivskyi >> wrote: >>> >>> On 22 November 2017 at 20:05, Guido van Rossum

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 22 November 2017 at 20:33, Guido van Rossum wrote: > On Wed, Nov 22, 2017 at 11:12 AM, Ivan Levkivskyi > wrote: > >> On 22 November 2017 at 20:05, Guido van Rossum wrote: >> >>> On Wed, Nov 22, 2017 at 10:54 AM, Jelle Zijlstra < >>>

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On Wed, Nov 22, 2017 at 11:12 AM, Ivan Levkivskyi wrote: > On 22 November 2017 at 20:05, Guido van Rossum wrote: > >> On Wed, Nov 22, 2017 at 10:54 AM, Jelle Zijlstra < >> jelle.zijls...@gmail.com> wrote >> >>> 2017-11-22 9:58 GMT-08:00 Guido van Rossum

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 22 November 2017 at 20:05, Guido van Rossum wrote: > On Wed, Nov 22, 2017 at 10:54 AM, Jelle Zijlstra > wrote > >> 2017-11-22 9:58 GMT-08:00 Guido van Rossum : >> > (OTOH, await in the same position must keep working since it's

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 22 November 2017 at 20:15, Guido van Rossum wrote: > On Wed, Nov 22, 2017 at 11:08 AM, Ivan Levkivskyi > wrote: > >> On 22 November 2017 at 19:54, Jelle Zijlstra >> wrote: >> >>> >>> One proposal is to make it so `g` gets

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On Wed, Nov 22, 2017 at 2:08 PM, Ivan Levkivskyi wrote: > On 22 November 2017 at 19:54, Jelle Zijlstra > wrote: >> >> >> One proposal is to make it so `g` gets assigned a list, and the `yield` >> happens in the enclosing scope (so the enclosing

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On Wed, Nov 22, 2017 at 11:08 AM, Ivan Levkivskyi wrote: > On 22 November 2017 at 19:54, Jelle Zijlstra > wrote: > >> >> One proposal is to make it so `g` gets assigned a list, and the `yield` >> happens in the enclosing scope (so the enclosing

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 22 November 2017 at 19:54, Jelle Zijlstra wrote: > > One proposal is to make it so `g` gets assigned a list, and the `yield` > happens in the enclosing scope (so the enclosing function would have to be > a generator). This was the way things worked in Python 2, I

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On Wed, Nov 22, 2017 at 10:54 AM, Jelle Zijlstra wrote: > > > 2017-11-22 9:58 GMT-08:00 Guido van Rossum : > >> Wow, 44 messages in 4 hours. That must be some kind of record. >> >> If/when there's an action item, can someone summarize for me? >> >> The

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 22 November 2017 at 18:15, Paul Moore wrote: > On 22 November 2017 at 16:47, Ivan Levkivskyi > wrote: > > On 22 November 2017 at 17:43, Paul Moore wrote: > >> > >> On 22 November 2017 at 16:30, Ivan Levkivskyi

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

2017-11-22 9:58 GMT-08:00 Guido van Rossum : > Wow, 44 messages in 4 hours. That must be some kind of record. > > If/when there's an action item, can someone summarize for me? > > The main disagreement seems to be about what this code should do: g = [(yield i) for i in

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

22.11.17 17:10, Ivan Levkivskyi пише: - fix yield in comprehensions I'm working on this. I was going to inline the generating function a long time ago for small performance benefit, but the benefit looked too small for complicating the compiler code. Now I have other reason for doing this.

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

Wow, 44 messages in 4 hours. That must be some kind of record. If/when there's an action item, can someone summarize for me? -- --Guido van Rossum (python.org/~guido) ___ Python-Dev mailing list Python-Dev@python.org

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 11/22/2017 05:03 AM, Serhiy Storchaka wrote: From https://stackoverflow.com/questions/45190729/differences-between-generator-comprehension-expressions. g = [(yield i) for i in range(3)] Syntactically this looks like a list comprehension, and g should be a list, right? But actually

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 22 November 2017 at 18:15, Paul Moore wrote: > On 22 November 2017 at 16:47, Ivan Levkivskyi > wrote: > > On 22 November 2017 at 17:43, Paul Moore wrote: > >> > >> On 22 November 2017 at 16:30, Ivan Levkivskyi

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 11/22/2017 09:15 AM, Paul Moore wrote: 1. List comprehensions expand into nested for/if statements in the "obvious" way - with an empty list created to start and append used to add items to it. 1a. Variables introduced in the comprehension don't "leak" (see below). 2. Generator

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 22 November 2017 at 16:47, Ivan Levkivskyi wrote: > On 22 November 2017 at 17:43, Paul Moore wrote: >> >> On 22 November 2017 at 16:30, Ivan Levkivskyi >> wrote: >> > On 22 November 2017 at 17:24, Antoine Pitrou

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 22 November 2017 at 17:50, Paul Moore wrote: > On 22 November 2017 at 16:38, Ivan Levkivskyi > wrote: > > On 22 November 2017 at 17:16, Paul Moore wrote: > >> > >> Docs more importantly than PEP IMO. And are you implying that

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On Wed, Nov 22, 2017 at 11:11 AM, Paul Moore wrote: [..] > But by the logic you just described, await isn't (or shouldn't be) > allowed, surely? No, that's a stretch. People can understand and actually use 'yield (await foo())', but they usually can't figure what 'yield

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 22 November 2017 at 16:38, Ivan Levkivskyi wrote: > On 22 November 2017 at 17:16, Paul Moore wrote: >> >> Docs more importantly than PEP IMO. And are you implying that there's >> a difference between generator expressions and comprehensions? I >>

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 22 November 2017 at 17:43, Paul Moore wrote: > On 22 November 2017 at 16:30, Ivan Levkivskyi > wrote: > > On 22 November 2017 at 17:24, Antoine Pitrou > wrote: > >> Given a comprehension (e.g. list comprehension) is expected to

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

Sorry, forgot some details in the second "definition": try: def __gen(): for i in range(3): yield (yield i) g = list(__gen()) finally: del __gen -- Ivan ___ Python-Dev mailing list

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 22 November 2017 at 16:30, Ivan Levkivskyi wrote: > On 22 November 2017 at 17:24, Antoine Pitrou wrote: >> Given a comprehension (e.g. list comprehension) is expected to work >> nominally as `constructor(generator expression)` > > As Yury just

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 22 November 2017 at 17:16, Paul Moore wrote: > On 22 November 2017 at 16:08, Ivan Levkivskyi > wrote: > > On 22 November 2017 at 16:56, Yury Selivanov > > wrote: > >> > >> On Wed, Nov 22, 2017 at 10:10 AM, Ivan Levkivskyi

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 22 November 2017 at 17:24, Antoine Pitrou wrote: > On Wed, 22 Nov 2017 17:08:14 +0100 > Ivan Levkivskyi wrote: > > On 22 November 2017 at 16:56, Yury Selivanov > > wrote: > > > > > On Wed, Nov 22, 2017 at 10:10 AM, Ivan

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On Wed, 22 Nov 2017 17:08:14 +0100 Ivan Levkivskyi wrote: > On 22 November 2017 at 16:56, Yury Selivanov > wrote: > > > On Wed, Nov 22, 2017 at 10:10 AM, Ivan Levkivskyi > > wrote: > > > On 22 November 2017 at 15:47, Paul

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 22 November 2017 at 15:56, Yury Selivanov wrote: > For synchronous generator expression: > >r = (f(i) for i in range(3)) > > is really: > >def _(): > for i in range(3): > yield f(i) >r = _() > > For an asynchronous generator expression: > >

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 22 November 2017 at 16:08, Ivan Levkivskyi wrote: > On 22 November 2017 at 16:56, Yury Selivanov > wrote: >> >> On Wed, Nov 22, 2017 at 10:10 AM, Ivan Levkivskyi >> wrote: >> > On 22 November 2017 at 15:47, Paul Moore

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 22 November 2017 at 15:56, Yury Selivanov wrote: > "await" in generator expressions works *correct*. I explained it here: > https://bugs.python.org/issue32113 > > To clarify a bit more: > >r = (V for I in X) > > is equivalent to: > >def _(): > for I in X:

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 22 November 2017 at 16:56, Yury Selivanov wrote: > On Wed, Nov 22, 2017 at 10:10 AM, Ivan Levkivskyi > wrote: > > On 22 November 2017 at 15:47, Paul Moore wrote: > [...] > I'm all for prohibiting using 'yield' expression in

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 22 November 2017 at 16:53, Paul Moore wrote: > On 22 November 2017 at 15:10, Ivan Levkivskyi > wrote: > > I think there may be a small misunderstanding here. The situation is > > different for comprehensions and generator expressions, > > let me

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On Wed, Nov 22, 2017 at 10:10 AM, Ivan Levkivskyi wrote: > On 22 November 2017 at 15:47, Paul Moore wrote: >> >> I generally don't understand "await" in any context, so I deferred >> judgement on that :-) Based on your comment that they are equally >>

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 22 November 2017 at 15:10, Ivan Levkivskyi wrote: > I think there may be a small misunderstanding here. The situation is > different for comprehensions and generator expressions, > let me summarize the current state: [...] > What do you think? Can you point me to where

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 22 November 2017 at 15:47, Paul Moore wrote: > I generally don't understand "await" in any context, so I deferred > judgement on that :-) Based on your comment that they are equally > tricky, I'd suggest we prohibit them both ;-) > > Less facetiously, comprehensions are

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 22 November 2017 at 15:46, Antoine Pitrou wrote: > On Wed, 22 Nov 2017 15:15:49 +0100 > Ivan Levkivskyi wrote: > > There are many things that I would reject in code review, but they are > > still allowed in Python, > > this is one of the reasons why

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 22 November 2017 at 14:15, Ivan Levkivskyi wrote: > On 22 November 2017 at 15:09, Paul Moore wrote: >> >> On 22 November 2017 at 13:53, Ivan Levkivskyi >> wrote: >> > On 22 November 2017 at 14:38, Antoine Pitrou

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On Wed, 22 Nov 2017 15:15:49 +0100 Ivan Levkivskyi wrote: > There are many things that I would reject in code review, but they are > still allowed in Python, > this is one of the reasons why code reviews exist. Also I am not sure how > `yield` in a comprehension > is more

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 22 November 2017 at 15:09, Paul Moore wrote: > On 22 November 2017 at 13:53, Ivan Levkivskyi > wrote: > > On 22 November 2017 at 14:38, Antoine Pitrou > wrote: > >> > >> On Wed, 22 Nov 2017 15:03:09 +0200 > >> Serhiy Storchaka

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 22 November 2017 at 14:53, Serhiy Storchaka wrote: > 22.11.17 15:25, Ivan Levkivskyi пише: > >> I think this is indeed a problem.. For me the biggest surprise was that >> `yield` inside a comprehension does not turn a surrounding function into >> comprehension, see also

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 22 November 2017 at 13:53, Ivan Levkivskyi wrote: > On 22 November 2017 at 14:38, Antoine Pitrou wrote: >> >> On Wed, 22 Nov 2017 15:03:09 +0200 >> Serhiy Storchaka wrote: >> > From >> > >> >

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On 22 November 2017 at 14:38, Antoine Pitrou wrote: > On Wed, 22 Nov 2017 15:03:09 +0200 > Serhiy Storchaka wrote: > > From > > https://stackoverflow.com/questions/45190729/ > differences-between-generator-comprehension-expressions. > > > > g =

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

22.11.17 15:25, Ivan Levkivskyi пише: I think this is indeed a problem.. For me the biggest surprise was that `yield` inside a comprehension does not turn a surrounding function into comprehension, see also

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

On Wed, 22 Nov 2017 15:03:09 +0200 Serhiy Storchaka wrote: > From > https://stackoverflow.com/questions/45190729/differences-between-generator-comprehension-expressions. > > g = [(yield i) for i in range(3)] > > Syntactically this looks like a list comprehension, and

Re: [Python-Dev] Tricky way of of creating a generator via a comprehension expression

Serhiy, I think this is indeed a problem. For me the biggest surprise was that `yield` inside a comprehension does not turn a surrounding function into comprehension, see also

[Python-Dev] Tricky way of of creating a generator via a comprehension expression

From https://stackoverflow.com/questions/45190729/differences-between-generator-comprehension-expressions. g = [(yield i) for i in range(3)] Syntactically this looks like a list comprehension, and g should be a list, right? But actually it is a generator. This code is equivalent to the

Re: [Python-Dev] Python initialization and embedded Python

On Wed, 22 Nov 2017 12:12:32 +0100 Victor Stinner wrote: > 2017-11-22 12:04 GMT+01:00 Antoine Pitrou : > > IMHO this really needs a simple solution documented somewhere. Also, > > hopefully when you do the wrong thing, you get a clear error message

Re: [Python-Dev] Python initialization and embedded Python

2017-11-22 12:04 GMT+01:00 Antoine Pitrou : > IMHO this really needs a simple solution documented somewhere. Also, > hopefully when you do the wrong thing, you get a clear error message to > know how to fix your code? Right now, calling PyMem_RawMalloc() before calling

Re: [Python-Dev] Python initialization and embedded Python

On Wed, 22 Nov 2017 10:38:32 +0100 Victor Stinner wrote: > > I fixed the issue by calling _PyRuntime_Initialize() as the very first > function in main(). > > I also had to add _PyMem_GetDefaultRawAllocator() to get a > deterministic memory allocator, rather than

Re: [Python-Dev] Python initialization and embedded Python

2017-11-21 16:57 GMT+01:00 Eric Snow : >> I understand that moving global variables to _PyRuntime helps to >> clarify how these variables are initialized and then finalized, but >> memory allocators are a complex corner case. > > Agreed. I spent a large portion of my