Re: [Python-Dev] Why no venv in existing directory?
Hi Carl, On 19.07.2012, at 18:39, Carl Meyer wrote: Hi Stefan, On 07/19/2012 06:28 AM, Stefan H. Holek wrote: While trying 3.3 beta I found that I cannot use my favorite virtualenv pattern with pyvenv: I'd have no problem with lifting the restriction. I don't recall any clear rationale; I think it was probably just the simplest implementation initially, and no one ever raised it as an issue in the PEP process. Thanks for your reply. The feature certainly is on *my* wish-list but I might be alone here. ;-) Stefan -- Stefan H. Holek ste...@epy.co.at ___ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
Re: [Python-Dev] Why no venv in existing directory?
Wiadomość napisana przez Stefan H. Holek w dniu 23 lip 2012, o godz. 09:09: Hi Carl, On 19.07.2012, at 18:39, Carl Meyer wrote: Hi Stefan, On 07/19/2012 06:28 AM, Stefan H. Holek wrote: While trying 3.3 beta I found that I cannot use my favorite virtualenv pattern with pyvenv: I'd have no problem with lifting the restriction. I don't recall any clear rationale; I think it was probably just the simplest implementation initially, and no one ever raised it as an issue in the PEP process. Thanks for your reply. The feature certainly is on *my* wish-list but I might be alone here. ;-) You are not. -- Best regards, Łukasz Langa Senior Systems Architecture Engineer IT Infrastructure Department Grupa Allegro Sp. z o.o. http://lukasz.langa.pl/ +48 791 080 144 ___ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
Re: [Python-Dev] [Python-checkins] cpython (merge 3.2 - default): Merge #15232: correctly mangle From lines in MIME preamble and epilogue
On Mon, Jul 23, 2012 at 12:34 AM, Meador Inge mead...@gmail.com wrote: On Sun, Jul 22, 2012 at 8:55 PM, r.david.murray python-check...@python.org wrote: http://hg.python.org/cpython/rev/80b81658455b changeset: 78246:80b81658455b parent: 78244:c43d73277756 parent: 78245:b97f65f2298d user:R David Murray rdmur...@bitdance.com date:Sun Jul 22 21:53:54 2012 -0400 summary: Merge #15232: correctly mangle From lines in MIME preamble and epilogue files: Lib/email/generator.py| 12 - Lib/test/test_email/test_email.py | 22 +++ Misc/NEWS | 3 ++ 3 files changed, 35 insertions(+), 2 deletions(-) I'm not quite sure what happened, but something seems to have gone wrong with this merge. After doing the following while on the default branch: $ hg merge 3.2 I see: $ hg st M Lib/email/generator.py M Lib/test/test_email/test_email.py M Misc/NEWS and a bunch of conflicts in 'Misc/NEWS'. Hmmm, actually it looks like this head merge that Senthil performed: http://hg.python.org/cpython/rev/af2e044609ca. Anyway, I resolved the conflicts. -- Meador ___ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
Re: [Python-Dev] venv scripts for fish and csh shells
I thought my proposition is minor change, but if it's too late for 3.3 — I'm ok. On Sun, Jul 22, 2012 at 8:54 PM, Antoine Pitrou solip...@pitrou.net wrote: On Sun, 22 Jul 2012 20:39:15 +0300 Andrew Svetlov andrew.svet...@gmail.com wrote: Ok. Sorry for my mistake — there are really no commits for http://bugs.python.org/issue15417 It's look important for me — but you are release manager. If you consider the patch as potentially dangerous — I have to agree with you. You are the master :) This is not because Georg is the master. When a release is nearing we think it is important to avoid introducing potential regressions, except when fixing existing bugs. That's why we have a feature freeze which extends to many kinds of enhancements, including performance improvements: really, it is more of a bugfix-only period. One could propose other mechanisms for release preparation, but in the meantime, it is important as a community that we all follow similar rules. Regards Antoine. -- Software development and contracting: http://pro.pitrou.net ___ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/andrew.svetlov%40gmail.com -- Thanks, Andrew Svetlov ___ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
Re: [Python-Dev] venv scripts for fish and csh shells
On Mon, Jul 23, 2012 at 11:24 AM, Andrew Svetlov andrew.svet...@gmail.com wrote: I thought my proposition is minor change, but if it's too late for 3.3 — I'm ok. Very simply, the first beta is when feature freeze goes into effect. This is a really common policy that has been in effect for a long time in CPython and most projects. ___ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
Re: [Python-Dev] [Python-checkins] cpython (merge 3.2 - default): MERGE: Better test for Issue #15402: Add a __sizeof__ method to struct.Struct
On Mon, Jul 23, 2012 at 11:17 AM, jesus.cea python-check...@python.org wrote:
http://hg.python.org/cpython/rev/b9a3ed1b14b9
changeset: 78260:b9a3ed1b14b9
parent: 78257:03063e718f5f
parent: 78259:1911e192af0d
user:Jesus Cea j...@jcea.es
date:Mon Jul 23 18:16:18 2012 +0200
summary:
MERGE: Better test for Issue #15402: Add a __sizeof__ method to
struct.Struct
files:
Doc/ACKS.txt| 1 +
Lib/test/test_struct.py | 8
2 files changed, 5 insertions(+), 4 deletions(-)
Jesús,
Doc/ACKS.txt is *only* for acknowledging documentation contributions.
Serhiy is already in Misc/ACKS. No need to add him to Doc/ACKS.txt.
As for the tests, I intentionally kept them the way that Serhiy contributed
them -- using = instead of . I kept them this way because we also
discussed in issue14596 the prospect of optimizing the way repeat counts
are handled. These tests would start failing if (when) that optimization
happens.
So, neither of these changes are really necessary. Although, it wouldn't
hurt to have *additional* tests using the relation.
diff --git a/Doc/ACKS.txt b/Doc/ACKS.txt
--- a/Doc/ACKS.txt
+++ b/Doc/ACKS.txt
@@ -205,6 +205,7 @@
* Anthony Starks
* Greg Stein
* Peter Stoehr
+ * Serhiy Storchaka
* Mark Summerfield
* Reuben Sumner
* Kalle Svensson
diff --git a/Lib/test/test_struct.py b/Lib/test/test_struct.py
--- a/Lib/test/test_struct.py
+++ b/Lib/test/test_struct.py
@@ -575,12 +575,12 @@
def test_sizeof(self):
self.assertGreater(sys.getsizeof(struct.Struct('BHILfdspP')),
sys.getsizeof(struct.Struct('B')))
-self.assertGreaterEqual(sys.getsizeof(struct.Struct('123B')),
+self.assertGreater(sys.getsizeof(struct.Struct('123B')),
sys.getsizeof(struct.Struct('B')))
-self.assertGreaterEqual(sys.getsizeof(struct.Struct('B' * 123)),
+self.assertGreater(sys.getsizeof(struct.Struct('B' * 1234)),
sys.getsizeof(struct.Struct('123B')))
-self.assertGreaterEqual(sys.getsizeof(struct.Struct('123xB')),
-sys.getsizeof(struct.Struct('B')))
+self.assertGreater(sys.getsizeof(struct.Struct('1234B')),
+sys.getsizeof(struct.Struct('123B')))
def test_main():
run_unittest(StructTest)
--
Repository URL: http://hg.python.org/cpython
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Re: [Python-Dev] [Python-checkins] cpython (merge 3.2 - default): MERGE: Better test for Issue #15402: Add a __sizeof__ method to struct.Struct
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
On 23/07/12 18:27, Meador Inge wrote:
Doc/ACKS.txt is *only* for acknowledging documentation
contributions. Serhiy is already in Misc/ACKS. No need to add him
to Doc/ACKS.txt.
Oh, I missed that. Thanks for the head up.
As for the tests, I intentionally kept them the way that Serhiy
contributed them -- using = instead of . I kept them this way
because we also discussed in issue14596 the prospect of optimizing
the way repeat counts are handled. These tests would start failing
if (when) that optimization happens.
The problem is that if we do =, then an unpatched python
interpreter could pass the test too. So we are not actually testing
the feature.
If the repeat counters are going to be optimized, the obvious step
would be to upgrade the test to do something like BHHIL instead of
123B. I would wait until this feature is implemented to update the test.
What do you think?.
So, neither of these changes are really necessary. Although, it
wouldn't hurt to have *additional* tests using the relation.
diff --git a/Doc/ACKS.txt b/Doc/ACKS.txt --- a/Doc/ACKS.txt +++
b/Doc/ACKS.txt @@ -205,6 +205,7 @@ * Anthony Starks * Greg Stein
* Peter Stoehr + * Serhiy Storchaka * Mark Summerfield * Reuben
Sumner * Kalle Svensson diff --git a/Lib/test/test_struct.py
b/Lib/test/test_struct.py --- a/Lib/test/test_struct.py +++
b/Lib/test/test_struct.py @@ -575,12 +575,12 @@ def
test_sizeof(self):
self.assertGreater(sys.getsizeof(struct.Struct('BHILfdspP')),
sys.getsizeof(struct.Struct('B'))) -
self.assertGreaterEqual(sys.getsizeof(struct.Struct('123B')), +
self.assertGreater(sys.getsizeof(struct.Struct('123B')),
sys.getsizeof(struct.Struct('B'))) -
self.assertGreaterEqual(sys.getsizeof(struct.Struct('B' * 123)),
+self.assertGreater(sys.getsizeof(struct.Struct('B' *
1234)), sys.getsizeof(struct.Struct('123B'))) -
self.assertGreaterEqual(sys.getsizeof(struct.Struct('123xB')), -
sys.getsizeof(struct.Struct('B'))) +
self.assertGreater(sys.getsizeof(struct.Struct('1234B')), +
sys.getsizeof(struct.Struct('123B')))
def test_main(): run_unittest(StructTest)
-- Repository URL: http://hg.python.org/cpython
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[Python-Dev] Doc/ACKS and Misc/ACKS
On Mon, 23 Jul 2012 18:38:30 +0200 Jesus Cea j...@jcea.es wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 23/07/12 18:27, Meador Inge wrote: Doc/ACKS.txt is *only* for acknowledging documentation contributions. Serhiy is already in Misc/ACKS. No need to add him to Doc/ACKS.txt. Oh, I missed that. Thanks for the head up. That said, we could probably merge Doc/ACKS and Misc/ACKS (*). There doesn't seem to be any strong argument for separating doc contributions from other contributions. (*) I think perhaps Éric already proposed it at some point Regards Antoine. -- Software development and contracting: http://pro.pitrou.net ___ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
Re: [Python-Dev] Doc/ACKS and Misc/ACKS
On 23/07/12 18:27, Meador Inge wrote: Doc/ACKS.txt is *only* for acknowledging documentation contributions. Serhiy is already in Misc/ACKS. No need to add him to Doc/ACKS.txt. Oh, I missed that. Thanks for the head up. That said, we could probably merge Doc/ACKS and Misc/ACKS (*). There doesn't seem to be any strong argument for separating doc contributions from other contributions. (*) I think perhaps Éric already proposed it at some point +1 ___ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
Re: [Python-Dev] Doc/ACKS and Misc/ACKS
On Mon, Jul 23, 2012 at 12:17 PM, Antoine Pitrou solip...@pitrou.net wrote: On Mon, 23 Jul 2012 18:38:30 +0200 Jesus Cea j...@jcea.es wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 23/07/12 18:27, Meador Inge wrote: Doc/ACKS.txt is *only* for acknowledging documentation contributions. Serhiy is already in Misc/ACKS. No need to add him to Doc/ACKS.txt. Oh, I missed that. Thanks for the head up. That said, we could probably merge Doc/ACKS and Misc/ACKS (*). There doesn't seem to be any strong argument for separating doc contributions from other contributions. (*) I think perhaps Éric already proposed it at some point +1 -- Meador ___ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
Re: [Python-Dev] [Python-checkins] cpython (merge 3.2 - default): MERGE: Better test for Issue #15402: Add a __sizeof__ method to struct.Struct
On Mon, Jul 23, 2012 at 11:38 AM, Jesus Cea j...@jcea.es wrote:
As for the tests, I intentionally kept them the way that Serhiy
contributed them -- using = instead of . I kept them this way
because we also discussed in issue14596 the prospect of optimizing
the way repeat counts are handled. These tests would start failing
if (when) that optimization happens.
The problem is that if we do =, then an unpatched python
interpreter could pass the test too. So we are not actually testing
the feature.
We are testing the feature because the first test looks like:
self.assertGreater(sys.getsizeof(struct.Struct('BHILfdspP')),
sys.getsizeof(struct.Struct('B')))
The way things were written 'sys.getsizeof' would returns the same
answer regardless of the format string.
The remaining tests looked like:
self.assertGreaterEqual(sys.getsizeof(struct.Struct('123B')),
sys.getsizeof(struct.Struct('B')))
self.assertGreaterEqual(sys.getsizeof(struct.Struct('B' * 123)),
sys.getsizeof(struct.Struct('123B')))
self.assertGreaterEqual(sys.getsizeof(struct.Struct('123xB')),
sys.getsizeof(struct.Struct('B')))
and while they didn't fail without the patch I felt they were still useful in
documenting that there is nothing that guarantees 'sizeof(123B) sizeof(B)'
'sizeof(B * 123) sizeof(123B)', or 'sizeof(123xB) sizeof(B)'.
If the repeat counters are going to be optimized, the obvious step
would be to upgrade the test to do something like BHHIL instead of
123B. I would wait until this feature is implemented to update the test.
That is what the first test basically already does :-)
What do you think?.
It isn't that big of a deal. We can just leave the tests as you changed them.
In the future it would probably be better to hash this stuff out in the tracker.
The patch was out for review for several days ...
Thanks,
-- Meador
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Re: [Python-Dev] Doc/ACKS and Misc/ACKS
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 23/07/12 19:30, Eli Bendersky wrote: That said, we could probably merge Doc/ACKS and Misc/ACKS (*). There doesn't seem to be any strong argument for separating doc contributions from other contributions. (*) I think perhaps Éric already proposed it at some point +1 +1 too. - -- Jesus Cea Avion _/_/ _/_/_/_/_/_/ j...@jcea.es - http://www.jcea.es/ _/_/_/_/ _/_/_/_/ _/_/ jabber / xmpp:j...@jabber.org _/_/_/_/ _/_/_/_/_/ . _/_/ _/_/_/_/ _/_/ _/_/ Things are not so easy _/_/ _/_/_/_/ _/_/_/_/ _/_/ My name is Dump, Core Dump _/_/_/_/_/_/ _/_/ _/_/ El amor es poner tu felicidad en la felicidad de otro - Leibniz -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQCVAwUBUA2XtJlgi5GaxT1NAQKiXQQAnOmVaALBmcAbEK7vImQ03m6tdh86ZyU/ VyRuoHVgHxsOn83h2VG+94zjNutedIMK9rq1hEhhPApJcXnYwftMpgEwlyj7vLFA RUz8c02sKpoi/T8BGv2xVdW09yeMCUwzTDAuaS73NqscwcGplibaSPU5oKOjqetc NhS0JdGQcr8= =Ifpc -END PGP SIGNATURE- ___ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
Re: [Python-Dev] Doc/ACKS and Misc/ACKS
On Mon, Jul 23, 2012 at 1:28 PM, Jesus Cea j...@jcea.es wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 23/07/12 19:30, Eli Bendersky wrote: That said, we could probably merge Doc/ACKS and Misc/ACKS (*). There doesn't seem to be any strong argument for separating doc contributions from other contributions. (*) I think perhaps Éric already proposed it at some point +1 +1 too. Before everyone else on the list just writes a two character +1 response, can we just assume that if you don't speak up, you're ok with it? Especially when it's about an ack file... ___ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
Re: [Python-Dev] [Python-checkins] cpython (merge 3.2 - default): MERGE: Better test for Issue #15402: Add a __sizeof__ method to struct.Struct
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
On 23/07/12 20:19, Meador Inge wrote:
self.assertGreaterEqual(sys.getsizeof(struct.Struct('123B')),
[...]
and while they didn't fail without the patch I felt they were still
useful in documenting that there is nothing that guarantees
'sizeof(123B) sizeof(B)' 'sizeof(B * 123)
sizeof(123B)', or 'sizeof(123xB) sizeof(B)'.
No garantee, but I would find interesting that
sizeof(1234B)==sizeof(B).
If someday we implement some clever idea here (like the repeat counter
optimization discussed), we can simply change sizeof(123B) to
sizeof(12345B), or to sizeof(BHBHBHBH), etc.
It isn't that big of a deal. We can just leave the tests as you
changed them. In the future it would probably be better to hash
this stuff out in the tracker. The patch was out for review for
several days ...
I agree. I should have raised this issue in the tracker. The fact is
that I was checking the patch carefully today, when we collided
mid-air working in the same issue both of us :-). I disliked the
proposed tests at that time.
Thanks for raising the issue. I will try to be more careful.
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Re: [Python-Dev] cpython (merge 3.2 - default): MERGE: Better test for Issue #15402: Add a __sizeof__ method to struct.Struct
On 23.07.12 19:38, Jesus Cea wrote: The problem is that if we do =, then an unpatched python interpreter could pass the test too. So we are not actually testing the feature. If the repeat counters are going to be optimized, the obvious step would be to upgrade the test to do something like BHHIL instead of 123B. I would wait until this feature is implemented to update the test. What do you think?. I think any __sizeof__ tests are meaningless, because any result is implementation detail. For other implementations we get other values and other relations. Any of our a priori assumptions could be incorrect. Even my first assert may fail, if implementation uses a continuous array with overallocation. I am now prepared a set of 14 __sizeof__ patches (should it be one issue or 14 individual issues in bugtracker?), and I feel a great desire not to write tests at all. ___ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
Re: [Python-Dev] cpython (merge 3.2 - default): MERGE: Better test for Issue #15402: Add a __sizeof__ method to struct.Struct
On 23.07.12 21:19, Meador Inge wrote: The patch was out for review for several days ... Actually for several months (in issue14596). ___ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
Re: [Python-Dev] cpython (merge 3.2 - default): MERGE: Better test for Issue #15402: Add a __sizeof__ method to struct.Struct
On 23 Jul 2012, at 19:49, Serhiy Storchaka wrote: On 23.07.12 19:38, Jesus Cea wrote: The problem is that if we do =, then an unpatched python interpreter could pass the test too. So we are not actually testing the feature. If the repeat counters are going to be optimized, the obvious step would be to upgrade the test to do something like BHHIL instead of 123B. I would wait until this feature is implemented to update the test. What do you think?. I think any __sizeof__ tests are meaningless, because any result is implementation detail. For other implementations we get other values and other relations. Any of our a priori assumptions could be incorrect. Even my first assert may fail, if implementation uses a continuous array with overallocation. I am now prepared a set of 14 __sizeof__ patches (should it be one issue or 14 individual issues in bugtracker?), and I feel a great desire not to write tests at all. Without tests how can you have any confidence the patches are correct (or will continue to be correct)? Just because something is implementation dependent doesn't mean it should not be tested - instead the tests should be marked as cpython specific so that they aren't executed on other implementations. All the best, Michael ___ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/fuzzyman%40voidspace.org.uk -- http://www.voidspace.org.uk/ May you do good and not evil May you find forgiveness for yourself and forgive others May you share freely, never taking more than you give. -- the sqlite blessing http://www.sqlite.org/different.html ___ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
[Python-Dev] Doc/ACKS and Misc/ACKS
Date: Mon, 23 Jul 2012 19:17:32 +0200 From: Antoine Pitrou solip...@pitrou.net To: python-dev@python.org Subject: [Python-Dev] Doc/ACKS and Misc/ACKS Doc/ACKS.txt is *only* for acknowledging documentation contributions. Serhiy is already in Misc/ACKS. No need to add him to Doc/ACKS.txt. That said, we could probably merge Doc/ACKS and Misc/ACKS (*). There doesn't seem to be any strong argument for separating doc contributions from other contributions. (*) I think perhaps ?ric already proposed it at some point I created an issue for this here: http://bugs.python.org/issue15437 --Chris ___ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
Re: [Python-Dev] cpython (merge 3.2 - default): MERGE: Better test for Issue #15402: Add a __sizeof__ method to struct.Struct
On 23.07.12 22:46, Michael Foord wrote: I am now prepared a set of 14 __sizeof__ patches (should it be one issue or 14 individual issues in bugtracker?), and I feel a great desire not to write tests at all. Without tests how can you have any confidence the patches are correct (or will continue to be correct)? Tests may not provide this. If we add a new dynamically allocated data or change the size of the old and forgot to reflect this in __sizeof__, then non modified tests not notice this. __sizeof__ returns 42. What is 42? ___ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
Re: [Python-Dev] Doc/ACKS and Misc/ACKS
Brian Curtin wrote: On Mon, Jul 23, 2012 at 1:28 PM, Jesus Cea j...@jcea.es wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 23/07/12 19:30, Eli Bendersky wrote: That said, we could probably merge Doc/ACKS and Misc/ACKS (*). There doesn't seem to be any strong argument for separating doc contributions from other contributions. (*) I think perhaps Éric already proposed it at some point +1 +1 too. Before everyone else on the list just writes a two character +1 response, can we just assume that if you don't speak up, you're ok with it? You mean I don't get to be clever and say +1 + too == +3 ? ;) ~Ethan~ ___ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
Re: [Python-Dev] cpython (merge 3.2 - default): MERGE: Better test for Issue #15402: Add a __sizeof__ method to struct.Struct
Zitat von Serhiy Storchaka storch...@gmail.com: On 23.07.12 22:46, Michael Foord wrote: I am now prepared a set of 14 __sizeof__ patches (should it be one issue or 14 individual issues in bugtracker?), and I feel a great desire not to write tests at all. Without tests how can you have any confidence the patches are correct (or will continue to be correct)? Tests may not provide this. If we add a new dynamically allocated data or change the size of the old and forgot to reflect this in __sizeof__, then non modified tests not notice this. __sizeof__ returns 42. What is 42? 42 is most likely not the right answer, as the size should be a multiple of four. The point of writing tests for the sizeof code is that you detect your own mistakes *in writing the test case*. The value of the test case is not so much that it provides detection of regressions, but that you notice the bug once you write the test case. You may argue that then there is no value in committing the test case, but there is also no harm in doing so. In addition, it *may* catch regressions: if somebody changes the layout of an object, the corresponding test most likely fails. Maybe the fix is trivial and just in the test, but maybe the layout changed fundamentally, and the author forgot to change sizeof along with the structure change. You wouldn't have to write 14 patches if implementing sizeof correctly was easy. Please see the existing extensive tests for inspiration on how to add new ones. Regards, Martin ___ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
Re: [Python-Dev] 2to3 porting HOWTO: setup.py question
On Mon, Jul 23, 2012 at 12:21 AM, Oscar Benjamin oscar.j.benja...@gmail.com wrote: On Sun, 22 Jul 2012 20:22:50 +0100, Oscar Benjamin oscar.benja...@bristol.ac.uk wrote: On 22 July 2012 14:08, R. David Murray rdmur...@bitdance.com wrote: On Sun, 22 Jul 2012 11:21:38 +0300, anatoly techtonik techto...@gmail.com wrote: http://docs.python.org/py3k/howto/pyporting.html#during-installation What's the point in making implicit Python 3 check here: try: # Python 3 from distutils.command.build_py import build_py_2to3 as build_py except ImportError: # Python 2 from distutils.command.build_py import build_py instead of explicit check like: import sys if sys.version_info[0] = 3: from distutils.command.build_py import build_py_2to3 as build_py It's called testing for the thing that actually matters, rather than testing a constant with a much broader meaning. Yes, in this case the results are the same, but IMO it is better programming practice to test the thing that actually matters when you can. I recently changed a setup.py from try/ImportError to an explicit sys.version_info check. I'm not totally sure how to reproduce this but I had a problem where I was installing into a 2.x virtualenv and it was running 2to3 during install and subsequently failing to import the 3.x code (the problem didn't occur when using the same python that generated the virtualenv). I may be wrong but I imagined that sometimes build_py_2to3 is importable on 2.x, perhaps for cross-building or something. In any case 'testing the thing that matters' means testing what version of Python you are about to install into not whether the python version supports running 2to3. I'm not familiar with distutils, really, so you could be right about what it is important to test. I was commenting based on the code snippet presented, which just deciding which build object to use. If build_py_2to3 can be imported by python2 and subsequently screws up the build, then yes the logic is incorrect. But I have to defer to the packaging people on that. (I wish I had time to help with packaging because it is important, but it doesn't seem like a sensible place for me personally to spend my currently available time.) I'm not currently able to reproduce the problem on this machine. I think I was using pip/easy_install to install distribution X from PyPI that depended on distribution Y also on PyPI into an isolated 2.x virtualenv and found that distribution Y was converted with 2to3 when it was automatically installed. It could be a bug but I'm not confident enough with virtualenv to say that it wasn't just me messing things up somehow. Either way I still think that in this particular case a version check is the most explicit and appropriate thing to do. The author of a distribution that is distributed as Python 2.x code and installed on Python 3.x using 2to3 knows precisely when they want 2to3 to run and when they don't so why not make that explicit? As an aside, I find the check slightly easier to read if it is written like: if sys.version_info = (3, 0): from distutils.build_py import build_py_2to3 as build_py Yes. This looks better. If we reached consensus, I wonder how hard is it to find somebody who have the rights and able to fix the documentation: http://docs.python.org/py3k/howto/pyporting.html#during-installation -- anatoly t. ___ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
Re: [Python-Dev] 2to3 porting HOWTO: setup.py question
On 22/07/2012 15:57, R. David Murray wrote: I'm not familiar with distutils, really, so you could be right about what it is important to test. I was commenting based on the code snippet presented, which just deciding which build object to use. If build_py_2to3 can be imported by python2 and subsequently screws up the build, then yes the logic is incorrect. That can’t happen. The *_2to3 classes (don’t forget build_scripts_2to3) only exist in 3.x and work with a version check or an import with fallback. There is no cross-version-build at all in distutils. Regards ___ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
Re: [Python-Dev] 2to3 porting HOWTO: setup.py question
On 23 July 2012 23:27, Éric Araujo mer...@netwok.org wrote: On 22/07/2012 15:57, R. David Murray wrote: I'm not familiar with distutils, really, so you could be right about what it is important to test. I was commenting based on the code snippet presented, which just deciding which build object to use. If build_py_2to3 can be imported by python2 and subsequently screws up the build, then yes the logic is incorrect. That can’t happen. The *_2to3 classes (don’t forget build_scripts_2to3) only exist in 3.x and work with a version check or an import with fallback. There is no cross-version-build at all in distutils. I'm regretting the fact that I didn't keep notes of exactly what I was doing and I can't reproduce this now but this did happen to me when using one of pip/easy_install in a virtualenv. As I said earlier it may have been a mistake on my part as I'm not confident with virtualenv. At the time when I looked at the files in my pretty much empty virtualenv the main things I could see where related to setuptools so I guessed that some kind of setuptools monkey-patch had made build_py_2to3 importable and changed the setup.py to an explicit version check which fixed the problem in that environment. Oscar. ___ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
Re: [Python-Dev] 2to3 porting HOWTO: setup.py question
On Tue, Jul 24, 2012 at 1:27 AM, Éric Araujo mer...@netwok.org wrote: On 22/07/2012 15:57, R. David Murray wrote: I'm not familiar with distutils, really, so you could be right about what it is important to test. I was commenting based on the code snippet presented, which just deciding which build object to use. If build_py_2to3 can be imported by python2 and subsequently screws up the build, then yes the logic is incorrect. That can’t happen. The *_2to3 classes (don’t forget build_scripts_2to3) only exist in 3.x and work with a version check or an import with fallback. There is no cross-version-build at all in distutils. Python 3 check explicitly tells the reader that 2to3 should only be used in Python 3. Otherwise everybody need to guess when this *_2to3 tools are triggered. As for me, I see no technical limitations why *_2to3 can not be run by Python 2 (PyPy, RPython or whatever). Maybe I don't have Python3, but want to build my package for Python 3. In ideal world it is possible. -- anatoly t. ___ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
